Ext JS 4.0.7 Sencha Docs

Ext.data.proxy.Ajax

Alternate names

Ext.data.AjaxProxy
Ext.data.HttpProxy

Hierarchy

Inherited mixins

Requires

Subclasses

Files

AjaxProxy is one of the most widely-used ways of getting data into your application. It uses AJAX requests to load data from the server, usually to be placed into a Store. Let's take a look at a typical setup. Here we're going to set up a Store that has an AjaxProxy. To prepare, we'll also set up a Model:

Ext.define('User', {
    extend: 'Ext.data.Model',
    fields: ['id', 'name', 'email']
});

//The Store contains the AjaxProxy as an inline configuration
var store = Ext.create('Ext.data.Store', {
    model: 'User',
    proxy: {
        type: 'ajax',
        url : 'users.json'
    }
});

store.load();

Our example is going to load user data into a Store, so we start off by defining a Model with the fields that we expect the server to return. Next we set up the Store itself, along with a proxy configuration. This configuration was automatically turned into an Ext.data.proxy.Ajax instance, with the url we specified being passed into AjaxProxy's constructor. It's as if we'd done this:

new Ext.data.proxy.Ajax({
    url: 'users.json',
    model: 'User',
    reader: 'json'
});

A couple of extra configurations appeared here - model and reader. These are set by default when we create the proxy via the Store - the Store already knows about the Model, and Proxy's default Reader is JsonReader.

Now when we call store.load(), the AjaxProxy springs into action, making a request to the url we configured ('users.json' in this case). As we're performing a read, it sends a GET request to that url (see actionMethods to customize this - by default any kind of read will be sent as a GET request and any kind of write will be sent as a POST request).

Limitations

AjaxProxy cannot be used to retrieve data from other domains. If your application is running on http://domainA.com it cannot load data from http://domainB.com because browsers have a built-in security policy that prohibits domains talking to each other via AJAX.

If you need to read data from another domain and can't set up a proxy server (some software that runs on your own domain's web server and transparently forwards requests to http://domainB.com, making it look like they actually came from http://domainA.com), you can use Ext.data.proxy.JsonP and a technique known as JSON-P (JSON with Padding), which can help you get around the problem so long as the server on http://domainB.com is set up to support JSON-P responses. See JsonPProxy's introduction docs for more details.

Readers and Writers

AjaxProxy can be configured to use any type of Reader to decode the server's response. If no Reader is supplied, AjaxProxy will default to using a JsonReader. Reader configuration can be passed in as a simple object, which the Proxy automatically turns into a Reader instance:

var proxy = new Ext.data.proxy.Ajax({
    model: 'User',
    reader: {
        type: 'xml',
        root: 'users'
    }
});

proxy.getReader(); //returns an XmlReader instance based on the config we supplied

Url generation

AjaxProxy automatically inserts any sorting, filtering, paging and grouping options into the url it generates for each request. These are controlled with the following configuration options:

  • pageParam - controls how the page number is sent to the server (see also startParam and limitParam)
  • sortParam - controls how sort information is sent to the server
  • groupParam - controls how grouping information is sent to the server
  • filterParam - controls how filter information is sent to the server

Each request sent by AjaxProxy is described by an Operation. To see how we can customize the generated urls, let's say we're loading the Proxy with the following Operation:

var operation = new Ext.data.Operation({
    action: 'read',
    page  : 2
});

Now we'll issue the request for this Operation by calling read:

var proxy = new Ext.data.proxy.Ajax({
    url: '/users'
});

proxy.read(operation); //GET /users?page=2

Easy enough - the Proxy just copied the page property from the Operation. We can customize how this page data is sent to the server:

var proxy = new Ext.data.proxy.Ajax({
    url: '/users',
    pagePage: 'pageNumber'
});

proxy.read(operation); //GET /users?pageNumber=2

Alternatively, our Operation could have been configured to send start and limit parameters instead of page:

var operation = new Ext.data.Operation({
    action: 'read',
    start : 50,
    limit : 25
});

var proxy = new Ext.data.proxy.Ajax({
    url: '/users'
});

proxy.read(operation); //GET /users?start=50&limit;=25

Again we can customize this url:

var proxy = new Ext.data.proxy.Ajax({
    url: '/users',
    startParam: 'startIndex',
    limitParam: 'limitIndex'
});

proxy.read(operation); //GET /users?startIndex=50&limitIndex;=25

AjaxProxy will also send sort and filter information to the server. Let's take a look at how this looks with a more expressive Operation object:

var operation = new Ext.data.Operation({
    action: 'read',
    sorters: [
        new Ext.util.Sorter({
            property : 'name',
            direction: 'ASC'
        }),
        new Ext.util.Sorter({
            property : 'age',
            direction: 'DESC'
        })
    ],
    filters: [
        new Ext.util.Filter({
            property: 'eyeColor',
            value   : 'brown'
        })
    ]
});

This is the type of object that is generated internally when loading a Store with sorters and filters defined. By default the AjaxProxy will JSON encode the sorters and filters, resulting in something like this (note that the url is escaped before sending the request, but is left unescaped here for clarity):

var proxy = new Ext.data.proxy.Ajax({
    url: '/users'
});

proxy.read(operation); //GET /users?sort=[{"property":"name","direction":"ASC"},{"property":"age","direction":"DESC"}]&filter;=[{"property":"eyeColor","value":"brown"}]

We can again customize how this is created by supplying a few configuration options. Let's say our server is set up to receive sorting information is a format like "sortBy=name#ASC,age#DESC". We can configure AjaxProxy to provide that format like this:

 var proxy = new Ext.data.proxy.Ajax({
     url: '/users',
     sortParam: 'sortBy',
     filterParam: 'filterBy',

     //our custom implementation of sorter encoding - turns our sorters into "name#ASC,age#DESC"
     encodeSorters: function(sorters) {
         var length   = sorters.length,
             sortStrs = [],
             sorter, i;

         for (i = 0; i < length; i++) {
             sorter = sorters[i];

             sortStrs[i] = sorter.property + '#' + sorter.direction
         }

         return sortStrs.join(",");
     }
 });

 proxy.read(operation); //GET /users?sortBy=name#ASC,age#DESC&filterBy;=[{"property":"eyeColor","value":"brown"}]

We can also provide a custom encodeFilters function to encode our filters.

Available since: 1.1.0

Defined By

Config options

Specific urls to call on CRUD action methods "create", "read", "update" and "destroy". ...

Specific urls to call on CRUD action methods "create", "read", "update" and "destroy". Defaults to:

api: {
    create  : undefined,
    read    : undefined,
    update  : undefined,
    destroy : undefined
}

The url is built based upon the action being executed [create|read|update|destroy] using the commensurate api property, or if undefined default to the configured Ext.data.Store.url.

For example:

api: {
    create  : '/controller/new',
    read    : '/controller/load',
    update  : '/controller/update',
    destroy : '/controller/destroy_action'
}

If the specific URL for a given CRUD action is undefined, the CRUD action request will be directed to the configured url.

Available since: 4.0.0

True to batch actions of a particular type when synchronizing the store. ...

True to batch actions of a particular type when synchronizing the store. Defaults to true.

Defaults to: true

Available since: 4.0.0

Comma-separated ordering 'create', 'update' and 'destroy' actions when batching. ...

Comma-separated ordering 'create', 'update' and 'destroy' actions when batching. Override this to set a different order for the batched CRUD actions to be executed in. Defaults to 'create,update,destroy'.

Defaults to: 'create,update,destroy'

Available since: 4.0.0

The name of the cache param added to the url when using noCache. ...

The name of the cache param added to the url when using noCache. Defaults to "_dc".

Defaults to: "_dc"

Available since: 4.0.0

The default registered reader type. ...

The default registered reader type. Defaults to 'json'.

Defaults to: 'json'

Available since: 4.0.0

The default registered writer type. ...

The default registered writer type. Defaults to 'json'.

Defaults to: 'json'

Available since: 4.0.0

The name of the direction parameter to send in a request. ...

The name of the direction parameter to send in a request. This is only used when simpleSortMode is set to true. Defaults to 'dir'.

Defaults to: 'dir'

Available since: 4.0.0

Extra parameters that will be included on every request. ...

Extra parameters that will be included on every request. Individual requests with params of the same name will override these params when they are in conflict.

Available since: 4.0.0

The name of the 'filter' parameter to send in a request. ...

The name of the 'filter' parameter to send in a request. Defaults to 'filter'. Set this to undefined if you don't want to send a filter parameter.

Defaults to: 'filter'

Available since: 4.0.0

The name of the 'group' parameter to send in a request. ...

The name of the 'group' parameter to send in a request. Defaults to 'group'. Set this to undefined if you don't want to send a group parameter.

Defaults to: 'group'

Available since: 4.0.0

Ext.data.proxy.Ajax
view source
: Object
Any headers to add to the Ajax request. ...

Any headers to add to the Ajax request. Defaults to undefined.

Available since: 4.0.0

The name of the 'limit' parameter to send in a request. ...

The name of the 'limit' parameter to send in a request. Defaults to 'limit'. Set this to undefined if you don't want to send a limit parameter.

Defaults to: 'limit'

Available since: 4.0.0

A config object containing one or more event handlers to be added to this object during initialization. ...

A config object containing one or more event handlers to be added to this object during initialization. This should be a valid listeners config object as specified in the addListener example for attaching multiple handlers at once.

DOM events from Ext JS Components

While some Ext JS Component classes export selected DOM events (e.g. "click", "mouseover" etc), this is usually only done when extra value can be added. For example the DataView's itemclick event passing the node clicked on. To access DOM events directly from a child element of a Component, we need to specify the element option to identify the Component property to add a DOM listener to:

new Ext.panel.Panel({
    width: 400,
    height: 200,
    dockedItems: [{
        xtype: 'toolbar'
    }],
    listeners: {
        click: {
            element: 'el', //bind to the underlying el property on the panel
            fn: function(){ console.log('click el'); }
        },
        dblclick: {
            element: 'body', //bind to the underlying body property on the panel
            fn: function(){ console.log('dblclick body'); }
        }
    }
});

Available since: 1.1.0

The name of the Model to tie to this Proxy. ...

The name of the Model to tie to this Proxy. Can be either the string name of the Model, or a reference to the Model constructor. Required.

Available since: 4.0.0

Disable caching by adding a unique parameter name to the request. ...

Disable caching by adding a unique parameter name to the request. Set to false to allow caching. Defaults to true.

Defaults to: true

Available since: 4.0.0

The name of the 'page' parameter to send in a request. ...

The name of the 'page' parameter to send in a request. Defaults to 'page'. Set this to undefined if you don't want to send a page parameter.

Defaults to: 'page'

Available since: 4.0.0

The Ext.data.reader.Reader to use to decode the server's response or data read from client. ...

The Ext.data.reader.Reader to use to decode the server's response or data read from client. This can either be a Reader instance, a config object or just a valid Reader type name (e.g. 'json', 'xml').

Available since: 4.0.4

Enabling simpleSortMode in conjunction with remoteSort will only send one sort property and a direction when a remote...

Enabling simpleSortMode in conjunction with remoteSort will only send one sort property and a direction when a remote sort is requested. The directionParam and sortParam will be sent with the property name and either 'ASC' or 'DESC'.

Defaults to: false

Available since: 4.0.0

The name of the 'sort' parameter to send in a request. ...

The name of the 'sort' parameter to send in a request. Defaults to 'sort'. Set this to undefined if you don't want to send a sort parameter.

Defaults to: 'sort'

Available since: 4.0.0

The name of the 'start' parameter to send in a request. ...

The name of the 'start' parameter to send in a request. Defaults to 'start'. Set this to undefined if you don't want to send a start parameter.

Defaults to: 'start'

Available since: 4.0.0

The number of milliseconds to wait for a response. ...

The number of milliseconds to wait for a response. Defaults to 30000 milliseconds (30 seconds).

Defaults to: 30000

Available since: 4.0.0

The URL from which to request the data object.

The URL from which to request the data object.

Available since: 4.0.0

The Ext.data.writer.Writer to use to encode any request sent to the server or saved to client. ...

The Ext.data.writer.Writer to use to encode any request sent to the server or saved to client. This can either be a Writer instance, a config object or just a valid Writer type name (e.g. 'json', 'xml').

Available since: 4.0.4

Defined By

Properties

Ext.data.proxy.Ajax
view source
: Object
Mapping of action name to HTTP request method. ...

Mapping of action name to HTTP request method. In the basic AjaxProxy these are set to 'GET' for 'read' actions and 'POST' for 'create', 'update' and 'destroy' actions. The Ext.data.proxy.Rest maps these to the correct RESTful methods.

Defaults to: {create: 'POST', read: 'GET', update: 'POST', destroy: 'POST'}

Available since: 4.0.0

Available since: 4.0.0

...

Defaults to: /^(?:scope|delay|buffer|single|stopEvent|preventDefault|stopPropagation|normalized|args|delegate|element|vertical|horizontal|freezeEvent)$/

Available since: 4.0.0

...

Defaults to: true

Available since: 4.0.0

Get the reference to the current class from which this object was instantiated. ...

Get the reference to the current class from which this object was instantiated. Unlike statics, this.self is scope-dependent and it's meant to be used for dynamic inheritance. See statics for a detailed comparison

Ext.define('My.Cat', {
    statics: {
        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
    },

    constructor: function() {
        alert(this.self.speciesName); / dependent on 'this'

        return this;
    },

    clone: function() {
        return new this.self();
    }
});


Ext.define('My.SnowLeopard', {
    extend: 'My.Cat',
    statics: {
        speciesName: 'Snow Leopard'         // My.SnowLeopard.speciesName = 'Snow Leopard'
    }
});

var cat = new My.Cat();                     // alerts 'Cat'
var snowLeopard = new My.SnowLeopard();     // alerts 'Snow Leopard'

var clone = snowLeopard.clone();
alert(Ext.getClassName(clone));             // alerts 'My.SnowLeopard'

Available since: 4.0.0

Methods

Defined By

Instance methods

Ext.data.proxy.Ajax
view source
new( [config] ) : Ext.data.proxy.Ajax
Note that if this HttpProxy is being used by a Store, then the Store's call to load will override any specified callb...

Note that if this HttpProxy is being used by a Store, then the Store's call to load will override any specified callback and params options. In this case, use the Store's events to modify parameters, or react to loading events.

Available since: 1.1.0

Parameters

  • config : Object (optional)

    Config object. If an options parameter is passed, the singleton Ext.Ajax object will be used to make the request.

Returns

Overrides: Ext.data.proxy.Proxy.constructor

Adds the specified events to the list of events which this Observable may fire. ...

Adds the specified events to the list of events which this Observable may fire.

Available since: 1.1.0

Parameters

  • o : Object/String

    Either an object with event names as properties with a value of true or the first event name string if multiple event names are being passed as separate parameters. Usage:

    this.addEvents({
        storeloaded: true,
        storecleared: true
    });
    
  • more : String... (optional)

    Additional event names if multiple event names are being passed as separate parameters. Usage:

    this.addEvents('storeloaded', 'storecleared');
    
...

Available since: 4.0.6

Parameters

Returns

( eventName, fn, [scope], [options] )
Appends an event handler to this object. ...

Appends an event handler to this object.

Available since: 1.1.0

Parameters

  • eventName : String

    The name of the event to listen for. May also be an object who's property names are event names.

  • fn : Function

    The method the event invokes. Will be called with arguments given to fireEvent plus the options parameter described below.

  • scope : Object (optional)

    The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

  • options : Object (optional)

    An object containing handler configuration.

    Note: Unlike in ExtJS 3.x, the options object will also be passed as the last argument to every event handler.

    This object may contain any of the following properties:

    • scope : Object

      The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

    • delay : Number

      The number of milliseconds to delay the invocation of the handler after the event fires.

    • single : Boolean

      True to add a handler to handle just the next firing of the event, and then remove itself.

    • buffer : Number

      Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.

    • target : Observable

      Only call the handler if the event was fired on the target Observable, not if the event was bubbled up from a child Observable.

    • element : String

      This option is only valid for listeners bound to Components. The name of a Component property which references an element to add a listener to.

      This option is useful during Component construction to add DOM event listeners to elements of Components which will exist only after the Component is rendered. For example, to add a click listener to a Panel's body:

      new Ext.panel.Panel({
          title: 'The title',
          listeners: {
              click: this.handlePanelClick,
              element: 'body'
          }
      });
      

    Combining Options

    Using the options argument, it is possible to combine different types of listeners:

    A delayed, one-time listener.

    myPanel.on('hide', this.handleClick, this, {
        single: true,
        delay: 100
    });
    

    Attaching multiple handlers in 1 call

    The method also allows for a single argument to be passed which is a config object containing properties which specify multiple events. For example:

    myGridPanel.on({
        cellClick: this.onCellClick,
        mouseover: this.onMouseOver,
        mouseout: this.onMouseOut,
        scope: this // Important. Ensure "this" is correct during handler execution
    });
    

    One can also specify options for each event handler separately:

    myGridPanel.on({
        cellClick: {fn: this.onCellClick, scope: this, single: true},
        mouseover: {fn: panel.onMouseOver, scope: panel}
    });
    

Fires

    ( item, ename, [fn], [scope], [opt] )
    Adds listeners to any Observable object (or Ext.Element) which are automatically removed when this Component is destr...

    Adds listeners to any Observable object (or Ext.Element) which are automatically removed when this Component is destroyed.

    Available since: 4.0.0

    Parameters

    • item : Ext.util.Observable/Ext.Element

      The item to which to add a listener/listeners.

    • ename : Object/String

      The event name, or an object containing event name properties.

    • fn : Function (optional)

      If the ename parameter was an event name, this is the handler function.

    • scope : Object (optional)

      If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

    • opt : Object (optional)

      If the ename parameter was an event name, this is the addListener options.

    Fires

      Optional callback function which can be used to clean up after a request has been completed. ...

      Optional callback function which can be used to clean up after a request has been completed.

      Available since: 4.0.0

      Parameters

      Encode any values being sent to the server. ...

      Encode any values being sent to the server. Can be overridden in subclasses.

      Available since: 4.0.0

      Parameters

      • An : Array

        array of sorters/filters.

      Returns

      Performs a batch of Operations, in the order specified by batchOrder. ...

      Performs a batch of Operations, in the order specified by batchOrder. Used internally by Ext.data.Store's sync method. Example usage:

      myProxy.batch({
          create : [myModel1, myModel2],
          update : [myModel3],
          destroy: [myModel4, myModel5]
      });
      

      Where the myModel* above are Model instances - in this case 1 and 2 are new instances and have not been saved before, 3 has been saved previously but needs to be updated, and 4 and 5 have already been saved but should now be destroyed.

      Available since: 4.0.0

      Parameters

      • operations : Object

        Object containing the Model instances to act upon, keyed by action name

      • listeners : Object (optional)

        listeners object passed straight through to the Batch - see Ext.data.Batch

      Returns

      Creates and returns an Ext.data.Request object based on the options passed by the Store that this Proxy is attached to. ...

      Creates and returns an Ext.data.Request object based on the options passed by the Store that this Proxy is attached to.

      Available since: 4.0.0

      Parameters

      Returns

      Fires

        Generates a url based on a given Ext.data.Request object. ...

        Generates a url based on a given Ext.data.Request object. By default, ServerProxy's buildUrl will add the cache-buster param to the end of the url. Subclasses may need to perform additional modifications to the url.

        Available since: 4.0.0

        Parameters

        Returns

        Fires

          Call the original method that was previously overridden with override Ext.define('My.Cat', { constructor: functi...

          Call the original method that was previously overridden with override

          Ext.define('My.Cat', {
              constructor: function() {
                  alert("I'm a cat!");
          
                  return this;
              }
          });
          
          My.Cat.override({
              constructor: function() {
                  alert("I'm going to be a cat!");
          
                  var instance = this.callOverridden();
          
                  alert("Meeeeoooowwww");
          
                  return instance;
              }
          });
          
          var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                                    // alerts "I'm a cat!"
                                    // alerts "Meeeeoooowwww"
          

          Available since: 4.0.0

          Parameters

          • args : Array/Arguments

            The arguments, either an array or the arguments object

          Returns

          • Object

            Returns the result after calling the overridden method

          Call the parent's overridden method. ...

          Call the parent's overridden method. For example:

          Ext.define('My.own.A', {
              constructor: function(test) {
                  alert(test);
              }
          });
          
          Ext.define('My.own.B', {
              extend: 'My.own.A',
          
              constructor: function(test) {
                  alert(test);
          
                  this.callParent([test + 1]);
              }
          });
          
          Ext.define('My.own.C', {
              extend: 'My.own.B',
          
              constructor: function() {
                  alert("Going to call parent's overriden constructor...");
          
                  this.callParent(arguments);
              }
          });
          
          var a = new My.own.A(1); // alerts '1'
          var b = new My.own.B(1); // alerts '1', then alerts '2'
          var c = new My.own.C(2); // alerts "Going to call parent's overriden constructor..."
                                   // alerts '2', then alerts '3'
          

          Available since: 4.0.0

          Parameters

          • args : Array/Arguments

            The arguments, either an array or the arguments object from the current method, for example: this.callParent(arguments)

          Returns

          • Object

            Returns the result from the superclass' method

          Removes all listeners for this object including the managed listeners ...

          Removes all listeners for this object including the managed listeners

          Available since: 4.0.0

          Fires

            Removes all managed listeners for this object. ...

            Removes all managed listeners for this object.

            Available since: 4.0.0

            Fires

              ( eventName, args, bubbles )private
              Continue to fire event. ...

              Continue to fire event.

              Available since: Ext JS 4.0.7

              Parameters

              Fires

                in a ServerProxy all four CRUD operations are executed in the same manner, so we delegate to doRequest in each case ...

                in a ServerProxy all four CRUD operations are executed in the same manner, so we delegate to doRequest in each case

                Available since: 4.0.0

                Overrides: Ext.data.proxy.Proxy.create

                Creates an event handling function which refires the event from this object as the passed event name. ...

                Creates an event handling function which refires the event from this object as the passed event name.

                Available since: 4.0.0

                Parameters

                Returns

                Ext.data.proxy.Ajax
                view source
                ( request, operation, callback, scope ) : Functionprivate
                TODO: This is currently identical to the JsonPProxy version except for the return function's signature. ...

                TODO: This is currently identical to the JsonPProxy version except for the return function's signature. There is a lot of code duplication inside the returned function so we need to find a way to DRY this up.

                Available since: 4.0.0

                Parameters

                • request : Ext.data.Request

                  The Request object

                • operation : Ext.data.Operation

                  The Operation being executed

                • callback : Function

                  The callback function to be called when the request completes. This is usually the callback passed to doRequest

                • scope : Object

                  The scope in which to execute the callback function

                Returns

                Fires

                Performs the given destroy operation. ...

                Performs the given destroy operation.

                Available since: 4.0.0

                Overrides: Ext.data.proxy.Proxy.destroy, Ext.data.proxy.Server.destroy

                ( operation, callback, scope )
                In ServerProxy subclasses, the create, read, update and destroy methods all pass through to doRequest. ...

                In ServerProxy subclasses, the create, read, update and destroy methods all pass through to doRequest. Each ServerProxy subclass must implement the doRequest method - see Ext.data.proxy.JsonP and Ext.data.proxy.Ajax for examples. This method carries the same signature as each of the methods that delegate to it.

                Available since: 4.0.0

                Parameters

                Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if present. ...

                Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if present. There is no implementation in the Observable base class.

                This is commonly used by Ext.Components to bubble events to owner Containers. See Ext.Component.getBubbleTarget. The default implementation in Ext.Component returns the Component's immediate owner. But if a known target is required, this can be overridden to access the required target more quickly.

                Example:

                Ext.override(Ext.form.field.Base, {
                    //  Add functionality to Field's initComponent to enable the change event to bubble
                    initComponent : Ext.Function.createSequence(Ext.form.field.Base.prototype.initComponent, function() {
                        this.enableBubble('change');
                    }),
                
                    //  We know that we want Field's events to bubble directly to the FormPanel.
                    getBubbleTarget : function() {
                        if (!this.formPanel) {
                            this.formPanel = this.findParentByType('form');
                        }
                        return this.formPanel;
                    }
                });
                
                var myForm = new Ext.formPanel({
                    title: 'User Details',
                    items: [{
                        ...
                    }],
                    listeners: {
                        change: function() {
                            // Title goes red if form has been modified.
                            myForm.header.setStyle('color', 'red');
                        }
                    }
                });
                

                Available since: 3.4.0

                Parameters

                • events : String/String[]

                  The event name to bubble, or an Array of event names.

                Encodes the array of Ext.util.Filter objects into a string to be sent in the request url. ...

                Encodes the array of Ext.util.Filter objects into a string to be sent in the request url. By default, this simply JSON-encodes the filter data

                Available since: 4.0.0

                Parameters

                Returns

                Fires

                  Encodes the array of Ext.util.Sorter objects into a string to be sent in the request url. ...

                  Encodes the array of Ext.util.Sorter objects into a string to be sent in the request url. By default, this simply JSON-encodes the sorter data

                  Available since: 4.0.0

                  Parameters

                  Returns

                  Fires

                    Template method to allow subclasses to specify how to get the response for the reader. ...

                    Template method to allow subclasses to specify how to get the response for the reader.

                    Available since: 4.0.0

                    This is a template method. a hook into the functionality of this class. Feel free to override it in child classes.

                    Parameters

                    • response : Object

                      The server response

                    Returns

                    • Object

                      The response data to be used by the reader

                    Fires the specified event with the passed parameters (minus the event name, plus the options object passed to addList...

                    Fires the specified event with the passed parameters (minus the event name, plus the options object passed to addListener).

                    An event may be set to bubble up an Observable parent hierarchy (See Ext.Component.getBubbleTarget) by calling enableBubble.

                    Available since: 1.1.0

                    Parameters

                    • eventName : String

                      The name of the event to fire.

                    • args : Object...

                      Variable number of parameters are passed to handlers.

                    Returns

                    • Boolean

                      returns false if any of the handlers return false otherwise it returns true.

                    Fires

                      Gets the bubbling parent for an Observable ...

                      Gets the bubbling parent for an Observable

                      Available since: Ext JS 4.0.7

                      Returns

                      Fires

                        Ext.data.proxy.Ajax
                        view source
                        ( request ) : String
                        Returns the HTTP method name for a given request. ...

                        Returns the HTTP method name for a given request. By default this returns based on a lookup on actionMethods.

                        Available since: 4.0.0

                        Parameters

                        Returns

                        • String

                          The HTTP method to use (should be one of 'GET', 'POST', 'PUT' or 'DELETE')

                        Returns the model attached to this Proxy ...

                        Returns the model attached to this Proxy

                        Available since: 4.0.0

                        Returns

                        Copy any sorters, filters etc into the params so they can be sent over the wire ...

                        Copy any sorters, filters etc into the params so they can be sent over the wire

                        Available since: 4.0.0

                        Parameters

                        Fires

                          Returns the reader currently attached to this proxy instance ...

                          Returns the reader currently attached to this proxy instance

                          Available since: 4.0.0

                          Returns

                          Get the url for the request taking into account the order of priority, - The request - The api - The url ...

                          Get the url for the request taking into account the order of priority, - The request - The api - The url

                          Available since: 4.0.0

                          Parameters

                          Returns

                          Returns the writer currently attached to this proxy instance ...

                          Returns the writer currently attached to this proxy instance

                          Available since: 4.0.0

                          Returns

                          Checks to see if this object has any listeners for a specified event ...

                          Checks to see if this object has any listeners for a specified event

                          Available since: 1.1.0

                          Parameters

                          • eventName : String

                            The name of the event to check for

                          Returns

                          • Boolean

                            True if the event is being listened for, else false

                          ( config ) : Objectchainableprotected
                          Initialize configuration for this class. ...

                          Initialize configuration for this class. a typical example:

                          Ext.define('My.awesome.Class', {
                              // The default config
                              config: {
                                  name: 'Awesome',
                                  isAwesome: true
                              },
                          
                              constructor: function(config) {
                                  this.initConfig(config);
                          
                                  return this;
                              }
                          });
                          
                          var awesome = new My.awesome.Class({
                              name: 'Super Awesome'
                          });
                          
                          alert(awesome.getName()); // 'Super Awesome'
                          

                          Available since: 4.0.0

                          Parameters

                          Returns

                          • Object

                            mixins The mixin prototypes as key - value pairs

                          Fires

                            ( name, cls )private
                            Used internally by the mixins pre-processor ...

                            Used internally by the mixins pre-processor

                            Available since: 4.0.6

                            Parameters

                            Fires

                              ( item, ename, [fn], [scope], [opt] )
                              Shorthand for addManagedListener. ...

                              Shorthand for addManagedListener.

                              Available since: 4.0.2

                              Parameters

                              • item : Ext.util.Observable/Ext.Element

                                The item to which to add a listener/listeners.

                              • ename : Object/String

                                The event name, or an object containing event name properties.

                              • fn : Function (optional)

                                If the ename parameter was an event name, this is the handler function.

                              • scope : Object (optional)

                                If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

                              • opt : Object (optional)

                                If the ename parameter was an event name, this is the addListener options.

                              ( item, ename, [fn], [scope] )
                              Shorthand for removeManagedListener. ...

                              Shorthand for removeManagedListener.

                              Available since: 4.0.2

                              Parameters

                              • item : Ext.util.Observable/Ext.Element

                                The item from which to remove a listener/listeners.

                              • ename : Object/String

                                The event name, or an object containing event name properties.

                              • fn : Function (optional)

                                If the ename parameter was an event name, this is the handler function.

                              • scope : Object (optional)

                                If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

                              ( eventName, fn, [scope], [options] )
                              Shorthand for addListener. ...

                              Shorthand for addListener.

                              Available since: 1.1.0

                              Parameters

                              • eventName : String

                                The name of the event to listen for. May also be an object who's property names are event names.

                              • fn : Function

                                The method the event invokes. Will be called with arguments given to fireEvent plus the options parameter described below.

                              • scope : Object (optional)

                                The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

                              • options : Object (optional)

                                An object containing handler configuration.

                                Note: Unlike in ExtJS 3.x, the options object will also be passed as the last argument to every event handler.

                                This object may contain any of the following properties:

                                • scope : Object

                                  The scope (this reference) in which the handler function is executed. If omitted, defaults to the object which fired the event.

                                • delay : Number

                                  The number of milliseconds to delay the invocation of the handler after the event fires.

                                • single : Boolean

                                  True to add a handler to handle just the next firing of the event, and then remove itself.

                                • buffer : Number

                                  Causes the handler to be scheduled to run in an Ext.util.DelayedTask delayed by the specified number of milliseconds. If the event fires again within that time, the original handler is not invoked, but the new handler is scheduled in its place.

                                • target : Observable

                                  Only call the handler if the event was fired on the target Observable, not if the event was bubbled up from a child Observable.

                                • element : String

                                  This option is only valid for listeners bound to Components. The name of a Component property which references an element to add a listener to.

                                  This option is useful during Component construction to add DOM event listeners to elements of Components which will exist only after the Component is rendered. For example, to add a click listener to a Panel's body:

                                  new Ext.panel.Panel({
                                      title: 'The title',
                                      listeners: {
                                          click: this.handlePanelClick,
                                          element: 'body'
                                      }
                                  });
                                  

                                Combining Options

                                Using the options argument, it is possible to combine different types of listeners:

                                A delayed, one-time listener.

                                myPanel.on('hide', this.handleClick, this, {
                                    single: true,
                                    delay: 100
                                });
                                

                                Attaching multiple handlers in 1 call

                                The method also allows for a single argument to be passed which is a config object containing properties which specify multiple events. For example:

                                myGridPanel.on({
                                    cellClick: this.onCellClick,
                                    mouseover: this.onMouseOver,
                                    mouseout: this.onMouseOut,
                                    scope: this // Important. Ensure "this" is correct during handler execution
                                });
                                

                                One can also specify options for each event handler separately:

                                myGridPanel.on({
                                    cellClick: {fn: this.onCellClick, scope: this, single: true},
                                    mouseover: {fn: panel.onMouseOver, scope: panel}
                                });
                                
                              ...

                              Available since: 4.0.0

                              ( name, value )private
                              ...

                              Available since: 4.0.6

                              Parameters

                              Fires

                                ( name, fn )private
                                ...

                                Available since: 4.0.0

                                Parameters

                                ( success, operation, request, response, callback, scope )private
                                Should this be documented as protected method? ...

                                Should this be documented as protected method?

                                Available since: 4.0.0

                                Parameters

                                Fires

                                ...

                                Available since: 1.1.0

                                ...

                                Available since: 4.0.0

                                Performs the given read operation. ...

                                Performs the given read operation.

                                Available since: 4.0.0

                                Overrides: Ext.data.proxy.Proxy.read

                                Relays selected events from the specified Observable as if the events were fired by this. ...

                                Relays selected events from the specified Observable as if the events were fired by this.

                                Available since: 2.3.0

                                Parameters

                                • origin : Object

                                  The Observable whose events this object is to relay.

                                • events : String[]

                                  Array of event names to relay.

                                • prefix : String

                                Fires

                                  Removes an event handler. ...

                                  Removes an event handler.

                                  Available since: 1.1.0

                                  Parameters

                                  • eventName : String

                                    The type of event the handler was associated with.

                                  • fn : Function

                                    The handler to remove. This must be a reference to the function passed into the addListener call.

                                  • scope : Object (optional)

                                    The scope originally specified for the handler. It must be the same as the scope argument specified in the original call to addListener or the listener will not be removed.

                                  Fires

                                    Removes listeners that were added by the mon method. ...

                                    Removes listeners that were added by the mon method.

                                    Available since: 4.0.0

                                    Parameters

                                    • item : Ext.util.Observable/Ext.Element

                                      The item from which to remove a listener/listeners.

                                    • ename : Object/String

                                      The event name, or an object containing event name properties.

                                    • fn : Function (optional)

                                      If the ename parameter was an event name, this is the handler function.

                                    • scope : Object (optional)

                                      If the ename parameter was an event name, this is the scope (this reference) in which the handler function is executed.

                                    Fires

                                      Remove a single managed listener item ...

                                      Remove a single managed listener item

                                      Available since: 4.0.1

                                      Parameters

                                      • isClear : Boolean

                                        True if this is being called during a clear

                                      • managedListener : Object

                                        The managed listener item See removeManagedListener for other args

                                      Resumes firing events (see suspendEvents). ...

                                      Resumes firing events (see suspendEvents).

                                      If events were suspended using the queueSuspended parameter, then all events fired during event suspension will be sent to any listeners now.

                                      Available since: 2.3.0

                                      ( config ) : Ext.Basechainableprivate
                                      ...

                                      Available since: 4.0.0

                                      Parameters

                                      Returns

                                      Fires

                                        ( operation, response )private
                                        Sets up an exception on the operation ...

                                        Sets up an exception on the operation

                                        Available since: 4.0.0

                                        Parameters

                                        Sets the model associated with this proxy. ...

                                        Sets the model associated with this proxy. This will only usually be called by a Store

                                        Available since: 4.0.0

                                        Parameters

                                        • model : String/Ext.data.Model

                                          The new model. Can be either the model name string, or a reference to the model's constructor

                                        • setOnStore : Boolean

                                          Sets the new model on the associated Store, if one is present

                                        Fires

                                          Sets the Proxy's Reader by string, config object or Reader instance ...

                                          Sets the Proxy's Reader by string, config object or Reader instance

                                          Available since: 4.0.0

                                          Parameters

                                          Returns

                                          Sets the Proxy's Writer by string, config object or Writer instance ...

                                          Sets the Proxy's Writer by string, config object or Writer instance

                                          Available since: 4.0.0

                                          Parameters

                                          Returns

                                          Get the reference to the class from which this object was instantiated. ...

                                          Get the reference to the class from which this object was instantiated. Note that unlike self, this.statics() is scope-independent and it always returns the class from which it was called, regardless of what this points to during run-time

                                          Ext.define('My.Cat', {
                                              statics: {
                                                  totalCreated: 0,
                                                  speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
                                              },
                                          
                                              constructor: function() {
                                                  var statics = this.statics();
                                          
                                                  alert(statics.speciesName);     // always equals to 'Cat' no matter what 'this' refers to
                                                                                  // equivalent to: My.Cat.speciesName
                                          
                                                  alert(this.self.speciesName);   // dependent on 'this'
                                          
                                                  statics.totalCreated++;
                                          
                                                  return this;
                                              },
                                          
                                              clone: function() {
                                                  var cloned = new this.self;                      // dependent on 'this'
                                          
                                                  cloned.groupName = this.statics().speciesName;   // equivalent to: My.Cat.speciesName
                                          
                                                  return cloned;
                                              }
                                          });
                                          
                                          
                                          Ext.define('My.SnowLeopard', {
                                              extend: 'My.Cat',
                                          
                                              statics: {
                                                  speciesName: 'Snow Leopard'     // My.SnowLeopard.speciesName = 'Snow Leopard'
                                              },
                                          
                                              constructor: function() {
                                                  this.callParent();
                                              }
                                          });
                                          
                                          var cat = new My.Cat();                 // alerts 'Cat', then alerts 'Cat'
                                          
                                          var snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'
                                          
                                          var clone = snowLeopard.clone();
                                          alert(Ext.getClassName(clone));         // alerts 'My.SnowLeopard'
                                          alert(clone.groupName);                 // alerts 'Cat'
                                          
                                          alert(My.Cat.totalCreated);             // alerts 3
                                          

                                          Available since: 4.0.0

                                          Returns

                                          Suspends the firing of all events. ...

                                          Suspends the firing of all events. (see resumeEvents)

                                          Available since: 2.3.0

                                          Parameters

                                          • queueSuspended : Boolean

                                            Pass as true to queue up suspended events to be fired after the resumeEvents call instead of discarding all suspended events.

                                          ( eventName, fn, [scope] )
                                          Shorthand for removeListener. ...

                                          Shorthand for removeListener.

                                          Available since: 1.1.0

                                          Parameters

                                          • eventName : String

                                            The type of event the handler was associated with.

                                          • fn : Function

                                            The handler to remove. This must be a reference to the function passed into the addListener call.

                                          • scope : Object (optional)

                                            The scope originally specified for the handler. It must be the same as the scope argument specified in the original call to addListener or the listener will not be removed.

                                          Performs the given update operation. ...

                                          Performs the given update operation.

                                          Available since: 4.0.0

                                          Overrides: Ext.data.proxy.Proxy.update

                                          Defined By

                                          Static methods

                                          ( members ) : Ext.Basechainablestatic
                                          Add / override static properties of this class. ...

                                          Add / override static properties of this class.

                                          Ext.define('My.cool.Class', {
                                              ...
                                          });
                                          
                                          My.cool.Class.addStatics({
                                              someProperty: 'someValue',      // My.cool.Class.someProperty = 'someValue'
                                              method1: function() { ... },    // My.cool.Class.method1 = function() { ... };
                                              method2: function() { ... }     // My.cool.Class.method2 = function() { ... };
                                          });
                                          

                                          Available since: 4.0.2

                                          Parameters

                                          Returns

                                          ( fromClass, members ) : Ext.Basechainablestatic
                                          Borrow another class' members to the prototype of this class. ...

                                          Borrow another class' members to the prototype of this class.

                                          Ext.define('Bank', {
                                              money: '$$$',
                                              printMoney: function() {
                                                  alert('$$$$$$$');
                                              }
                                          });
                                          
                                          Ext.define('Thief', {
                                              ...
                                          });
                                          
                                          Thief.borrow(Bank, ['money', 'printMoney']);
                                          
                                          var steve = new Thief();
                                          
                                          alert(steve.money); // alerts '$$$'
                                          steve.printMoney(); // alerts '$$$$$$$'
                                          

                                          Available since: 4.0.2

                                          Parameters

                                          • fromClass : Ext.Base

                                            The class to borrow members from

                                          • members : String/String[]

                                            The names of the members to borrow

                                          Returns

                                          Create a new instance of this Class. ...

                                          Create a new instance of this Class.

                                          Ext.define('My.cool.Class', {
                                              ...
                                          });
                                          
                                          My.cool.Class.create({
                                              someConfig: true
                                          });
                                          

                                          All parameters are passed to the constructor of the class.

                                          Available since: 4.0.2

                                          Returns

                                          ( alias, origin )static
                                          Create aliases for existing prototype methods. ...

                                          Create aliases for existing prototype methods. Example:

                                          Ext.define('My.cool.Class', {
                                              method1: function() { ... },
                                              method2: function() { ... }
                                          });
                                          
                                          var test = new My.cool.Class();
                                          
                                          My.cool.Class.createAlias({
                                              method3: 'method1',
                                              method4: 'method2'
                                          });
                                          
                                          test.method3(); // test.method1()
                                          
                                          My.cool.Class.createAlias('method5', 'method3');
                                          
                                          test.method5(); // test.method3() -> test.method1()
                                          

                                          Available since: 4.0.2

                                          Parameters

                                          Get the current class' name in string format. ...

                                          Get the current class' name in string format.

                                          Ext.define('My.cool.Class', {
                                              constructor: function() {
                                                  alert(this.self.getName()); // alerts 'My.cool.Class'
                                              }
                                          });
                                          
                                          My.cool.Class.getName(); // 'My.cool.Class'
                                          

                                          Available since: 4.0.4

                                          Returns

                                          Add methods / properties to the prototype of this class. ...

                                          Add methods / properties to the prototype of this class.

                                          Ext.define('My.awesome.Cat', {
                                              constructor: function() {
                                                  ...
                                              }
                                          });
                                          
                                           My.awesome.Cat.implement({
                                               meow: function() {
                                                  alert('Meowww...');
                                               }
                                           });
                                          
                                           var kitty = new My.awesome.Cat;
                                           kitty.meow();
                                          

                                          Available since: 4.0.2

                                          Parameters

                                          ( members ) : Ext.Basechainablestatic
                                          Override prototype members of this class. ...

                                          Override prototype members of this class. Overridden methods can be invoked via callOverridden

                                          Ext.define('My.Cat', {
                                              constructor: function() {
                                                  alert("I'm a cat!");
                                          
                                                  return this;
                                              }
                                          });
                                          
                                          My.Cat.override({
                                              constructor: function() {
                                                  alert("I'm going to be a cat!");
                                          
                                                  var instance = this.callOverridden();
                                          
                                                  alert("Meeeeoooowwww");
                                          
                                                  return instance;
                                              }
                                          });
                                          
                                          var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                                                                    // alerts "I'm a cat!"
                                                                    // alerts "Meeeeoooowwww"
                                          

                                          Available since: 4.0.2

                                          Parameters

                                          Returns

                                          Defined By

                                          Events

                                          ( this, response, operation, eOpts )
                                          Fires when the server returns an exception ...

                                          Fires when the server returns an exception

                                          Available since: 4.0.0

                                          Parameters