    Observable
      Store

# Class Ext.data.Store

Package: | Ext.data
Defined In: | Store.js
Class: | Store
Subclasses: | ArrayStore, DirectStore, GroupingStore, JsonStore, XmlStore
Extends: | Observable

The Store class encapsulates a client side cache of Record objects which provide input data for Components such as the GridPanel, the ComboBox, or the DataView.

Retrieving Data

A Store object may access a data object using:

- configured implementation of DataProxy
- data to automatically pass in data
- loadData to manually pass in data

Reading Data

A Store object has no inherent knowledge of the format of the data object (it could be an Array, XML, or JSON). A Store object uses an appropriate configured implementation of a DataReader to create Record instances from the data object.

Store Types

There are several implementations of Store available which are customized for use with a specific DataReader implementation. Here is an example using an ArrayStore which implicitly creates a reader commensurate to an Array data object.

    var myStore = new Ext.data.ArrayStore({
        fields: ['fullname', 'first'],
        idIndex: 0 // id for each record will be the first element
    });

For custom implementations create a basic Ext.data.Store configured as needed:

    // create a Record constructor:
    var rt = Ext.data.Record.create([
        {name: 'fullname'},
        {name: 'first'}
    ]);
    var myStore = new Ext.data.Store({
        // explicitly create reader
        reader: new Ext.data.ArrayReader(
            {
                idIndex: 0  // id for each record will be the first element
            },
            rt // recordType
        )
    });

Load some data into store (note the data object is an array which corresponds to the reader):

    var myData = [
        [1, 'Fred Flintstone', 'Fred'],  // note that id for the record is the first element
        [2, 'Barney Rubble', 'Barney']
    ];
    myStore.loadData(myData);

Records are cached and made available through accessor functions. An example of adding a record to the store:

    var defaultData = {
        fullname: 'Full Name',
        first: 'First Name'
    };
    var recId = 100; // provide unique id for the record
    var r = new myStore.recordType(defaultData, ++recId); // create new record
    myStore.insert(0, r); // insert a new record into the store (also see add)

Writing Data

And new in Ext version 3, use the new DataWriter to create an automated, Writable Store along with RESTful features.

## Config Options

Config Options | Defined By
--- | ---
| autoDestroy : Boolean true to destroy the store when the component the store is bound to is destroyed (defaults to false). Note: this shoul... `true` to destroy the store when the component the store is bound to is destroyed (defaults to `false`). Note: this should be set to true when using stores that are bound to only 1 component. | Store
| autoLoad : Boolean/Object If data is not specified, and if autoLoad is true or an Object, this store's load method is automatically called afte... If `data` is not specified, and if `autoLoad` is `true` or an `Object`, this store's load method is automatically called after creation. If the value of `autoLoad` is an `Object`, this `Object` will be passed to the store's load method. | Store
| autoSave : Boolean Defaults to true causing the store to automatically save records to the server when a record is modified (ie: becomes... Defaults to `true` causing the store to automatically save records to the server when a record is modified (ie: becomes 'dirty'). Specify `false` to manually call save to send all modifiedRecords to the server. Note: each CRUD action will be sent as a separate request. | Store
| baseParams : Object An object containing properties which are to be sent as parameters for every HTTP request. Parameters are encoded as ... An object containing properties which are to be sent as parameters for every HTTP request. Parameters are encoded as standard HTTP parameters using Ext.urlEncode. Note: `baseParams` may be superseded by any `params` specified in a `load` request, see `load` for more details. This property may be modified after creation using the `setBaseParam` method. | Store
| batch : Boolean Defaults to true (unless restful:true). Multiple requests for each CRUD action (CREATE, READ, UPDATE and DESTROY) wil... Defaults to `true` (unless `restful:true`). Multiple requests for each CRUD action (CREATE, READ, UPDATE and DESTROY) will be combined and sent as one transaction. Only applies when `autoSave` is set to `false`. If Store is RESTful, the DataProxy is also RESTful, and a unique transaction is generated for each record. | Store
| data : Array An inline data object readable by the `reader`. Typically this option, or the `url` option will be specified. | Store
| defaultParamNames : Object Provides the default values for the paramNames property. To globally modify the parameters for all stores, this objec... Provides the default values for the paramNames property. To globally modify the parameters for all stores, this object should be changed on the store prototype. | Store
| listeners : Object A config object containing one or more event handlers to be added to this object during initialization. This should ... 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 ExtJs Components While some ExtJs 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 `click` event passing the node clicked on. To access DOM events directly from a Component's HTMLElement, listeners must be added to the Element after the Component has been rendered. A plugin can simplify this step:
    // Plugin is configured with a listeners config object.
    // The Component is appended to the argument list of all handler functions.
    Ext.DomObserver = Ext.extend(Object, {
        constructor: function(config) {
            this.listeners = config.listeners ? config.listeners : config;
        },

        // Component passes itself into plugin's init method
        init: function(c) {
            var p, l = this.listeners;
            for (p in l) {
                if (Ext.isFunction(l[p])) {
                    l[p] = this.createHandler(l[p], c);
                } else {
                    l[p].fn = this.createHandler(l[p].fn, c);
                }
            }

            // Add the listeners to the Element immediately following the render call
            c.render = c.render.createSequence(function() {
                var e = c.getEl();
                if (e) {
                    e.on(l);
                }
            });
        },

        createHandler: function(fn, c) {
            return function(e) {
                fn.call(this, e, c);
            };
        }
    });

    var combo = new Ext.form.ComboBox({

        // Collapse combo when its element is clicked on
        plugins: [ new Ext.DomObserver({
            click: function(evt, comp) {
                comp.collapse();
            }
        })],
        store: myStore,
        typeAhead: true,
        mode: 'local',
        triggerAction: 'all'
    });
| Observable
| paramNames : Object An object containing properties which specify the names of the paging and sorting parameters passed to remote servers... An object containing properties which specify the names of the paging and sorting parameters passed to remote servers when loading blocks of data. By default, this object takes the following form:
    {
        start : 'start',  // The parameter name which specifies the start row
        limit : 'limit',  // The parameter name which specifies number of rows to return
        sort : 'sort',    // The parameter name which specifies the column to sort on
        dir : 'dir'       // The parameter name which specifies the sort direction
    }
The server must produce the requested data block upon receipt of these parameter names. If different parameter names are required, this property can be overriden using a configuration property. A PagingToolbar bound to this Store uses this property to determine the parameter names to use in its requests. | Store
| proxy : Ext.data.DataProxy The DataProxy object which provides access to a data object. See `url`. | Store
| pruneModifiedRecords : Boolean true to clear all modified record information each time the store is loaded or when a record is removed (defaults to ... `true` to clear all modified record information each time the store is loaded or when a record is removed (defaults to `false`). See getModifiedRecords for the accessor method to retrieve the modified records. | Store
| reader : Ext.data.DataReader The Reader object which processes the data object and returns an Array of Ext.data.Record objects which are cached ke... The Reader object which processes the data object and returns an Array of Ext.data.Record objects which are cached keyed by their `id` property. | Store
| remoteSort : boolean true if sorting is to be handled by requesting the Proxy to provide a refreshed version of the data object in sorted ... `true` if sorting is to be handled by requesting the `Proxy` to provide a refreshed version of the data object in sorted order, as opposed to sorting the Record cache in place (defaults to `false`). If `remoteSort` is `true`, then clicking on a Grid Column's header causes the current page to be requested from the server appending the following two parameters to the `params`: `sort` : String The `name` (as specified in the Record's Field definition) of the field to sort on. `dir` : String The direction of the sort, 'ASC' or 'DESC' (case-sensitive). | Store
| restful : Boolean Defaults to false. Set to true to have the Store and the set Proxy operate in a RESTful manner. The store will autom... Defaults to `false`. Set to `true` to have the Store and the set Proxy operate in a RESTful manner. The store will automatically generate GET, POST, PUT and DELETE requests to the server. The HTTP method used for any given CRUD action is described in Ext.data.Api.restActions. For additional information see Ext.data.DataProxy.restful. Note: if `restful:true` `batch` will internally be set to `false`. | Store
| sortInfo : Object A config object to specify the sort order in the request of a Store's load operation. Note that for local sorting, t... A config object to specify the sort order in the request of a Store's load operation. Note that for local sorting, the `direction` property is case-sensitive. See also remoteSort and paramNames. For example:
    sortInfo: {
        field: 'fieldName',
        direction: 'ASC' // or 'DESC' (case sensitive for local sorting)
    }
| Store
| storeId : String If passed, the id to use to register with the StoreMgr. Note: if a (deprecated) id is specified it will supersede the... If passed, the id to use to register with the StoreMgr. Note: if a (deprecated) `id` is specified it will supersede the `storeId` assignment. | Store
| url : String If a proxy is not specified the url will be used to implicitly configure a HttpProxy if an url is specified. Typicall... If a `proxy` is not specified the `url` will be used to implicitly configure a HttpProxy if an `url` is specified. Typically this option, or the `data` option will be specified. | Store
| writer : Ext.data.DataWriter The Writer object which processes a record object for being written to the server-side database. When a writer is ins... The Writer object which processes a record object for being written to the server-side database. When a writer is installed into a Store the add, remove, and update events on the store are monitored in order to remotely create records, destroy records, or update records. The proxy for this store will relay any writexception events to this store. Sample implementation:
    var writer = new Ext.data.JsonWriter({
        encode: true,
        writeAllFields: true // write all fields, not just those that changed
    });

    // Typical Store collecting the Proxy, Reader and Writer together.
    var store = new Ext.data.Store({
        storeId: 'user',
        root: 'records',
        proxy: proxy,
        reader: reader,
        writer: writer,     // <-- plug a DataWriter into the store just as you would a Reader
        paramsAsHash: true,
        autoSave: false    // <-- false to delay executing create, update, destroy requests
                            //     until specifically told to do so.
    });
| Store

## Public Properties

Property | Defined By
--- | ---
| baseParams : Object See the corresponding configuration option for a description of this property. To modify this property see setBasePar... See the `corresponding configuration option` for a description of this property. To modify this property see `setBaseParam`. | Store
| fields : Ext.util.MixedCollection A MixedCollection containing the defined Fields for the Records stored in this Store. Read-only. | Store
| lastOptions : Object Contains the last options object used as the parameter to the load method. See load for the details of what this may ... Contains the last options object used as the parameter to the load method. See load for the details of what this may contain. This may be useful for accessing any params which were used to load the current Record cache. | Store
| recordType : Function The Record constructor as supplied to (or created by) the Reader. Read-only. If the Reader was constructed by passing... The Record constructor as supplied to (or created by) the Reader. Read-only. If the Reader was constructed by passing in an Array of Ext.data.Field definition objects, instead of a Record constructor, it will implicitly create a Record constructor from that Array (see Ext.data.Record.create for additional details). This property may be used to create new Records of the type held in this Store, for example:
    // create the data store
        var store = new Ext.data.ArrayStore({
            autoDestroy: true,
            fields: [
               {name: 'company'},
               {name: 'price', type: 'float'},
               {name: 'change', type: 'float'},
               {name: 'pctChange', type: 'float'},
               {name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
            ]
        });
        store.loadData(myData);

        // create the Grid
        var grid = new Ext.grid.EditorGridPanel({
            store: store,
            colModel: new Ext.grid.ColumnModel({
                columns: [
                    {id:'company', header: 'Company', width: 160, dataIndex: 'company'},
                    {header: 'Price', renderer: 'usMoney', dataIndex: 'price'},
                    {header: 'Change', renderer: change, dataIndex: 'change'},
                    {header: '% Change', renderer: pctChange, dataIndex: 'pctChange'},
                    {header: 'Last Updated', width: 85,
                        renderer: Ext.util.Format.dateRenderer('m/d/Y'),
                        dataIndex: 'lastChange'}
                ],
                defaults: {
                    sortable: true,
                    width: 75
                }
            }),
            autoExpandColumn: 'company', // match the id specified in the column model
            height:350,
            width:600,
            title:'Array Grid',
            tbar: [{
                text: 'Add Record',
                handler : function(){
                    var defaultData = {
                        change: 0,
                        company: 'New Company',
                        lastChange: (new Date()).clearTime(),
                        pctChange: 0,
                        price: 10
                    };
                    var recId = 3; // provide unique id
                    var p = new store.recordType(defaultData, recId); // create new record
                    grid.stopEditing();
                    store.insert(0, p); // insert a new record into the store (also see add)
                    grid.startEditing(0, 0);
                }
            }]
        });
| Store

## Public Methods

Method | Defined By
--- | ---
| Store( `Object config` ) Creates a new Store. Creates a new Store. Parameters: `config` : Object A config object containing the objects needed for the Store to access data, and read the data into Records. Returns: void | Store
| add( `Ext.data.Record[] records` ) : void Add Records to the Store and fires the add event. To add Records to the store from a remote source use load({add:tru... Add Records to the Store and fires the add event. To add Records to the store from a remote source use `load({add:true})`. See also `recordType` and `insert`. Parameters: `records` : Ext.data.Record[] An Array of Ext.data.Record objects to add to the cache. See recordType. Returns: void | Store
- | addEvents( `Object|String o`, `string Optional.` ) : void 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. 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. `Optional.` : string Event name if multiple event names are being passed as separate parameters. Usage:
      this.addEvents('storeloaded', 'storecleared');
Returns: void | Observable
- | addListener( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this object. Appends an event handler to this object. Parameters: `eventName` : String The name of the event to listen for. `handler` : Function The method the event invokes. `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. properties. This 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. Combining Options Using the options argument, it is possible to combine different types of listeners: A delayed, one-time listener.
      myDataView.on('click', this.onClick, 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 handlers.
      myGridPanel.on({
      'click' : {
          fn: this.onClick,
          scope: this,
          delay: 100
      },
      'mouseover' : {
          fn: this.onMouseOver,
          scope: this
      },
      'mouseout' : {
          fn: this.onMouseOut,
          scope: this
      }
      });
  Or a shorthand syntax:
      myGridPanel.on({
      'click' : this.onClick,
      'mouseover' : this.onMouseOver,
      'mouseout' : this.onMouseOut,
       scope: this
      });
Returns: void | Observable
| addSorted( `Ext.data.Record record` ) : void (Local sort only) Inserts the passed Record into the Store at the index where it should go based on the current sort ... (Local sort only) Inserts the passed Record into the Store at the index where it should go based on the current sort information. Parameters: `record` : Ext.data.Record Returns: void | Store
| clearFilter( `Boolean suppressEvent` ) : void Revert to a view of the Record cache with no filtering applied. Revert to a view of the Record cache with no filtering applied. Parameters: `suppressEvent` : Boolean If `true` the filter is cleared silently without firing the datachanged event. Returns: void | Store
| collect( `String dataIndex`, [`Boolean allowNull`], [`Boolean bypassFilter`] ) : Array Collects unique values for a particular dataIndex from this store. Collects unique values for a particular dataIndex from this store. Parameters: `dataIndex` : String The property to collect `allowNull` : Boolean (optional) Pass true to allow null, undefined or empty string values `bypassFilter` : Boolean (optional) Pass true to collect from all records, even ones which are filtered Returns: `Array` An array of the unique values | Store
| commitChanges() : void Commit all Records with outstanding changes. To handle updates for changes, subscribe to the Store's update event, an... Commit all Records with outstanding changes. To handle updates for changes, subscribe to the Store's update event, and perform updating when the third parameter is Ext.data.Record.COMMIT. Parameters: None. Returns: void | Store
| destroy() : void Destroys the store. Destroys the store. Parameters: None. Returns: void | Store
| each( `Function fn`, [`Object scope`] ) : void Calls the specified function for each of the Records in the cache. Calls the specified function for each of the Records in the cache. Parameters: `fn` : Function The function to call. The Record is passed as the first parameter. Returning `false` aborts and exits the iteration. `scope` : Object (optional) The scope (`this` reference) in which the function is executed. Defaults to the current Record in the iteration. Returns: void | Store
| enableBubble( `String/Array events` ) : void 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, {
        //  Add functionality to Field's initComponent to enable the change event to bubble

        initComponent : Ext.form.Field.prototype.initComponent.createSequence(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');
            }
        }
    });
Parameters: `events` : String/Array The event name to bubble, or an Array of event names. Returns: void | Observable
| filter( `String field`, `String/RegExp value`, [`Boolean anyMatch`], [`Boolean caseSensitive`] ) : void Filter the records by a specified property. Filter the records by a specified property. Parameters: `field` : String A field on your records `value` : String/RegExp Either a string that the field should begin with, or a RegExp to test against the field. `anyMatch` : Boolean (optional) `true` to match any part not just the beginning `caseSensitive` : Boolean (optional) `true` for case sensitive comparison Returns: void | Store
| filterBy( `Function fn`, [`Object scope`] ) : void Filter by a function. The specified function will be called for each Record in this Store. If the function returns tr... Filter by a function. The specified function will be called for each Record in this Store. If the function returns `true` the Record is included, otherwise it is filtered out. Parameters: `fn` : Function The function to be called. It will be passed the following parameters: record : Ext.data.Record The record to test for filtering. Access field values using Ext.data.Record.get. id : Object The ID of the Record passed. `scope` : Object (optional) The scope (`this` reference) in which the function is executed. Defaults to this Store. Returns: void | Store
| find( `String fieldName`, `String/RegExp value`, [`Number startIndex`], [`Boolean anyMatch`], [`Boolean caseSensitive`] ) : Number Finds the index of the first matching Record in this store by a specific field value. Finds the index of the first matching Record in this store by a specific field value. Parameters: `fieldName` : String The name of the Record field to test. `value` : String/RegExp Either a string that the field value should begin with, or a RegExp to test against the field. `startIndex` : Number (optional) The index to start searching at `anyMatch` : Boolean (optional) True to match any part of the string, not just the beginning `caseSensitive` : Boolean (optional) True for case sensitive comparison Returns: `Number` The matched index or -1 | Store
| findBy( `Function fn`, [`Object scope`], [`Number startIndex`] ) : Number Find the index of the first matching Record in this Store by a function. If the function returns true it is considere... Find the index of the first matching Record in this Store by a function. If the function returns `true` it is considered a match. Parameters: `fn` : Function The function to be called. It will be passed the following parameters: record : Ext.data.Record The record to test for filtering. Access field values using Ext.data.Record.get. id : Object The ID of the Record passed. `scope` : Object (optional) The scope (`this` reference) in which the function is executed. Defaults to this Store. `startIndex` : Number (optional) The index to start searching at Returns: `Number` The matched index or -1 | Store
| findExact( `String fieldName`, `Mixed value`, [`Number startIndex`] ) : Number Finds the index of the first matching Record in this store by a specific field value. Finds the index of the first matching Record in this store by a specific field value. Parameters: `fieldName` : String The name of the Record field to test. `value` : Mixed The value to match the field against. `startIndex` : Number (optional) The index to start searching at Returns: `Number` The matched index or -1 | Store
| fireEvent( `String eventName`, `Object... args` ) : Boolean Fires the specified event with the passed parameters (minus the event name). An event may be set to bubble up an Obse... Fires the specified event with the passed parameters (minus the event name). An event may be set to bubble up an Observable parent hierarchy (See Ext.Component.getBubbleTarget) by calling enableBubble. 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. | Observable
| getAt( `Number index` ) : Ext.data.Record Get the Record at the specified index. Get the Record at the specified index. Parameters: `index` : Number The index of the Record to find. Returns: `Ext.data.Record` The Record at the passed index. Returns undefined if not found. | Store
| getById( `String id` ) : Ext.data.Record Get the Record with the specified id. Get the Record with the specified id. Parameters: `id` : String The id of the Record to find. Returns: `Ext.data.Record` The Record with the passed id. Returns undefined if not found. | Store
| getCount() : Number Gets the number of cached records. If using paging, this may not be the total size of the dataset. If the data object... Gets the number of cached records. If using paging, this may not be the total size of the dataset. If the data object used by the Reader contains the dataset size, then the getTotalCount function returns the dataset size. Note: see the Important note in load. Parameters: None. Returns: `Number` The number of Records in the Store's cache. | Store
| getModifiedRecords() : Ext.data.Record[] Gets all records modified since the last commit. Modified records are persisted across load operations (e.g., during... Gets all records modified since the last commit. Modified records are persisted across load operations (e.g., during paging). Note: deleted records are not included. See also `pruneModifiedRecords` and Ext.data.Record `markDirty.`. Parameters: None. Returns: `Ext.data.Record[]` An array of {@link Ext.data.Record Records} containing outstanding modifications. To obtain modified fields within a modified record see {@link Ext.data.Record}<tt>{@link Ext.data.Record#modified modified}.</tt>. | Store
| getRange( [`Number startIndex`], [`Number endIndex`] ) : Ext.data.Record[] Returns a range of Records between specified indices. Returns a range of Records between specified indices. Parameters: `startIndex` : Number (optional) The starting index (defaults to 0) `endIndex` : Number (optional) The ending index (defaults to the last Record in the Store) Returns: `Ext.data.Record[]` An array of Records | Store
| getSortState() : Object Returns an object describing the current sort state of this Store. Returns an object describing the current sort state of this Store. Parameters: None. Returns: `Object` The sort state of the Store. An object with two properties:<ul> <li><b>field : String<p class="sub-desc">The name of the field by which the Records are sorted.</p></li> <li><b>direction : String<p class="sub-desc">The sort order, 'ASC' or 'DESC' (case-sensitive).</p></li> </ul> See <tt>{@link #sortInfo}</tt> for additional details. | Store
| getTotalCount() : Number Gets the total number of records in the dataset as returned by the server. If using paging, for this to be accurate, ... Gets the total number of records in the dataset as returned by the server. If using paging, for this to be accurate, the data object used by the Reader must contain the dataset size. For remote data sources, the value for this property (`totalProperty` for JsonReader, `totalRecords` for XmlReader) shall be returned by a query on the server. Note: see the Important note in load. Parameters: None. Returns: `Number` The number of Records as specified in the data object passed to the Reader by the Proxy. <p><b>Note</b>: this value is not updated when changing the contents of the Store locally.</p> | Store
| hasListener( `String eventName` ) : Boolean 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 Parameters: `eventName` : String The name of the event to check for Returns: `Boolean` True if the event is being listened for, else false | Observable
| indexOf( `Ext.data.Record record` ) : Number Get the index within the cache of the passed Record. Get the index within the cache of the passed Record. Parameters: `record` : Ext.data.Record The Ext.data.Record object to find. Returns: `Number` The index of the passed Record. Returns -1 if not found. | Store
| indexOfId( `String id` ) : Number Get the index within the cache of the Record with the passed id. Get the index within the cache of the Record with the passed id. Parameters: `id` : String The id of the Record to find. Returns: `Number` The index of the Record. Returns -1 if not found. | Store
| insert( `Number index`, `Ext.data.Record[] records` ) : void Inserts Records into the Store at the given index and fires the add event. See also add and addSorted. Inserts Records into the Store at the given index and fires the add event. See also `add` and `addSorted`. Parameters: `index` : Number The start index at which to insert the passed Records. `records` : Ext.data.Record[] An Array of Ext.data.Record objects to add to the cache. Returns: void | Store
| isFiltered() : Boolean Returns true if this store is currently filtered Returns true if this store is currently filtered Parameters: None. Returns: `Boolean` | Store
| load( `Object options` ) : Boolean Loads the Record cache from the configured proxy using the configured reader. Notes:<div class="mdetail-params"> Impo... Loads the Record cache from the configured `proxy` using the configured `reader`. Notes: Important: loading is asynchronous! This call will return before the new data has been loaded. To perform any post-processing where information from the load call is required, specify the `callback` function to be called, or use a a 'load' event handler. If using remote paging, the first load call must specify the `start` and `limit` properties in the `options.params` property to establish the initial position within the dataset, and the number of Records to cache on each read from the Proxy. If using remote sorting, the configured `sortInfo` will be automatically included with the posted parameters according to the specified `paramNames`. Parameters: `options` : Object An object containing properties which control loading options: `params` :Object An object containing properties to pass as HTTP parameters to a remote data source. Note: `params` will override any `baseParams` of the same name. Parameters are encoded as standard HTTP parameters using Ext.urlEncode. callback : Function A function to be called after the Records have been loaded. The callback is called after the load event is fired, and is passed the following arguments: r : Ext.data.Record[] An Array of Records loaded. options : Options object from the load call. success : Boolean success indicator. scope : Object Scope with which to call the callback (defaults to the Store object) add : Boolean Indicator to append loaded records rather than replace the current cache. Note: see note for `loadData` Returns: `Boolean` If the <i>developer</i> provided <tt>{@link #beforeload}</tt> event handler returns <tt>false</tt>, the load call will abort and will return <tt>false</tt>; otherwise will return <tt>true</tt>. | Store
| loadData( `Object data`, [`Boolean append`] ) : void Loads data from a passed data block and fires the load event. A Reader which understands the format of the data must ... Loads data from a passed data block and fires the load event. A Reader which understands the format of the data must have been configured in the constructor. Parameters: `data` : Object The data block from which to read the Records. The format of the data expected is dependent on the type of Reader that is configured and should correspond to that Reader's `Ext.data.Reader.readRecords` parameter. `append` : Boolean (Optional) `true` to append the new Records rather the default to replace the existing cache. Note: that Records in a Store are keyed by their id, so added Records with ids which are already present in the Store will replace existing Records. Only Records with new, unique ids will be added. Returns: void | Store
| on( `String eventName`, `Function handler`, [`Object scope`], [`Object options`] ) : void Appends an event handler to this object (shorthand for addListener.) Appends an event handler to this object (shorthand for addListener.) Parameters: `eventName` : String The type of event to listen for `handler` : Function The method the event invokes `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. Returns: void | Observable
| purgeListeners() : void Removes all listeners for this object Removes all listeners for this object Parameters: None. Returns: void | Observable
| query( `String field`, `String/RegExp value`, [`Boolean anyMatch`], [`Boolean caseSensitive`] ) : MixedCollection Query the records by a specified property. Query the records by a specified property. Parameters: `field` : String A field on your records `value` : String/RegExp Either a string that the field should begin with, or a RegExp to test against the field. `anyMatch` : Boolean (optional) True to match any part not just the beginning `caseSensitive` : Boolean (optional) True for case sensitive comparison Returns: `MixedCollection` Returns an Ext.util.MixedCollection of the matched records | Store
| queryBy( `Function fn`, [`Object scope`] ) : MixedCollection Query the cached records in this Store using a filtering function. The specified function will be called with each re... Query the cached records in this Store using a filtering function. The specified function will be called with each record in this Store. If the function returns `true` the record is included in the results. Parameters: `fn` : Function The function to be called. It will be passed the following parameters: record : Ext.data.Record The record to test for filtering. Access field values using Ext.data.Record.get. id : Object The ID of the Record passed. `scope` : Object (optional) The scope (`this` reference) in which the function is executed. Defaults to this Store. Returns: `MixedCollection` Returns an Ext.util.MixedCollection of the matched records | Store
| rejectChanges() : void Reject outstanding changes on all modified records. Reject outstanding changes on all modified records. Parameters: None. Returns: void | Store
| relayEvents( `Object o`, `Array events` ) : void 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`. Parameters: `o` : Object The Observable whose events this object is to relay. `events` : Array Array of event names to relay. Returns: void | Observable
- | reload( `Object options` ) : void Reloads the Record cache from the configured Proxy using the configured Reader and the options from the last load ope... Reloads the Record cache from the configured Proxy using the configured Reader and the options from the last load operation performed. Note: see the Important note in load. Parameters: `options` : Object (optional) An `Object` containing loading options which may override the options used in the last load operation. See load for details (defaults to `null`, in which case the lastOptions are used). To add new params to the existing params:
      lastOptions = myStore.lastOptions;
      Ext.apply(lastOptions.params, {
          myNewParam: true
      });
      myStore.reload(lastOptions);
Returns: void | Store
| remove( `Ext.data.Record/Ext.data.Record[] record` ) : void Remove Records from the Store and fires the remove event. Remove Records from the Store and fires the remove event. Parameters: `record` : Ext.data.Record/Ext.data.Record[] The record object or array of records to remove from the cache. Returns: void | Store
| removeAll( `Boolean silent` ) : void Remove all Records from the Store and fires the clear event. Remove all Records from the Store and fires the clear event. Parameters: `silent` : Boolean [false] Defaults to `false`. Set `true` to not fire clear event. Returns: void | Store
| removeAt( `Number index` ) : void Remove a Record from the Store at the specified index. Fires the remove event. Remove a Record from the Store at the specified index. Fires the remove event. Parameters: `index` : Number The index of the record to remove. Returns: void | Store
| removeListener( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes an event handler. Removes an event handler. Parameters: `eventName` : String The type of event the handler was associated with. `handler` : 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. Returns: void | Observable
| resumeEvents() : void Resume firing events. (see suspendEvents) If events were suspended using the queueSuspended parameter, then all event... Resume 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. Parameters: None. Returns: void | Observable
| save() : Number Saves all pending changes to the store. If the commensurate Ext.data.Api.actions action is not configured, then the ... Saves all pending changes to the store. If the commensurate Ext.data.Api.actions action is not configured, then the configured `url` will be used.
    change            url
    ---------------   --------------------
    removed records   Ext.data.Api.actions.destroy
    phantom records   Ext.data.Api.actions.create
    modified records  Ext.data.Api.actions.update
Parameters: None. Returns: `Number` batch Returns a number to uniquely identify the "batch" of saves occurring. -1 will be returned if there are no items to save or the save was cancelled. | Store
| setBaseParam( `String name`, `Mixed value` ) : void Set the value for a property name in this store's baseParams. Usage:myStore.setBaseParam('foo', {bar:3}); Set the value for a property name in this store's baseParams. Usage:
    myStore.setBaseParam('foo', {bar:3});
Parameters: `name` : String Name of the property to assign `value` : Mixed Value to assign the `name`d property Returns: void | Store
| setDefaultSort( `String fieldName`, [`String dir`] ) : void Sets the default sort column and order to be used by the next load operation. Sets the default sort column and order to be used by the next load operation. Parameters: `fieldName` : String The name of the field to sort by. `dir` : String (optional) The sort order, 'ASC' or 'DESC' (case-sensitive, defaults to `'ASC'`) Returns: void | Store
| sort( `String fieldName`, [`String dir`] ) : void Sort the Records. If remote sorting is used, the sort is performed on the server, and the cache is reloaded. If local... Sort the Records. If remote sorting is used, the sort is performed on the server, and the cache is reloaded. If local sorting is used, the cache is sorted internally. See also remoteSort and paramNames. Parameters: `fieldName` : String The name of the field to sort by. `dir` : String (optional) The sort order, 'ASC' or 'DESC' (case-sensitive, defaults to `'ASC'`) Returns: void | Store
| sum( `String property`, [`Number start`], [`Number end`] ) : Number Sums the value of property for each record between start and end and returns the result. Sums the value of `property` for each record between `start` and `end` and returns the result. Parameters: `property` : String A field in each record `start` : Number (optional) The record index to start at (defaults to `0`) `end` : Number (optional) The last record index to include (defaults to length - 1) Returns: `Number` The sum | Store
| suspendEvents( `Boolean queueSuspended` ) : void Suspend the firing of all events. (see resumeEvents) Suspend the firing of all events. (see resumeEvents) Parameters: `queueSuspended` : Boolean Pass as true to queue up suspended events to be fired after the resumeEvents call instead of discarding all suspended events; Returns: void | Observable
| un( `String eventName`, `Function handler`, [`Object scope`] ) : void Removes an event handler (shorthand for removeListener.) Removes an event handler (shorthand for removeListener.) Parameters: `eventName` : String The type of event the handler was associated with. `handler` : 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. Returns: void | Observable

## Public Events

Event | Defined By
--- | ---
| add : ( `Store this`, `Ext.data.Record[] records`, `Number index` ) Fires when Records have been added to the Store Fires when Records have been added to the Store Listeners will be called with the following arguments: `this` : Store `records` : Ext.data.Record[] The array of Records added `index` : Number The index at which the record(s) were added | Store
| beforeload : ( `Store this`, `Object options` ) Fires before a request is made for a new data object. If the beforeload handler returns false the load action will b... Fires before a request is made for a new data object. If the beforeload handler returns `false` the load action will be canceled. Listeners will be called with the following arguments: `this` : Store `options` : Object The loading options that were specified (see load for details) | Store
| beforesave : ( `Ext.data.Store store`, `Object data` ) Fires before a save action is called. A save encompasses destroying records, updating records and creating records. Fires before a save action is called. A save encompasses destroying records, updating records and creating records. Listeners will be called with the following arguments: `store` : Ext.data.Store `data` : Object An object containing the data that is to be saved. The object will contain a key for each appropriate action, with an array of records for each action. | Store
| beforewrite : ( `Ext.data.Store store`, `String action`, `Record/Array[Record] rs`, `Object options`, `Object arg` ) Listeners will be called with the following arguments: `store` : Ext.data.Store `action` : String [Ext.data.Api.actions.create|update|destroy] `rs` : Record/Array[Record] `options` : Object The loading options that were specified. Edit `options.params` to add Http parameters to the request. (see save for details) `arg` : Object The callback's arg object passed to the request function | Store
| clear : ( `Store this`, `Record[] The` ) Fires when the data cache has been cleared. Fires when the data cache has been cleared. Listeners will be called with the following arguments: `this` : Store `The` : Record[] records that were cleared. | Store
| datachanged : ( `Store this` ) Fires when the data cache has changed in a bulk manner (e.g., it has been sorted, filtered, etc.) and a widget that i... Fires when the data cache has changed in a bulk manner (e.g., it has been sorted, filtered, etc.) and a widget that is using this Store as a Record cache should refresh its view. Listeners will be called with the following arguments: `this` : Store | Store
| exception : ( `misc misc` ) Fires if an exception occurs in the Proxy during a remote request. This event is relayed through the corresponding Ex... Fires if an exception occurs in the Proxy during a remote request. This event is relayed through the corresponding Ext.data.DataProxy. See Ext.data.DataProxy.exception for additional details. Listeners will be called with the following arguments: `misc` : misc See Ext.data.DataProxy.exception for description. | Store
| load : ( `Store this`, `Ext.data.Record[] records`, `Object options` ) Fires after a new set of Records has been loaded. Fires after a new set of Records has been loaded. Listeners will be called with the following arguments: `this` : Store `records` : Ext.data.Record[] The Records that were loaded `options` : Object The loading options that were specified (see load for details) | Store
| loadexception : ( `misc misc` ) This event is deprecated in favor of the catch-all exception event instead. This event is relayed through the corresp... This event is deprecated in favor of the catch-all `exception` event instead. This event is relayed through the corresponding Ext.data.DataProxy. See Ext.data.DataProxy.loadexception for additional details. Listeners will be called with the following arguments: `misc` : misc See Ext.data.DataProxy.loadexception for description. | Store
| metachange : ( `Store this`, `Object meta` ) Fires when this store's reader provides new metadata (fields). This is currently only supported for JsonReaders. Fires when this store's reader provides new metadata (fields). This is currently only supported for JsonReaders. Listeners will be called with the following arguments: `this` : Store `meta` : Object The JSON metadata | Store
| remove : ( `Store this`, `Ext.data.Record record`, `Number index` ) Fires when a Record has been removed from the Store Fires when a Record has been removed from the Store Listeners will be called with the following arguments: `this` : Store `record` : Ext.data.Record The Record that was removed `index` : Number The index at which the record was removed | Store
| save : ( `Ext.data.Store store`, `Number batch`, `Object data` ) Fires after a save is completed. A save encompasses destroying records, updating records and creating records. Fires after a save is completed. A save encompasses destroying records, updating records and creating records. Listeners will be called with the following arguments: `store` : Ext.data.Store `batch` : Number The identifier for the batch that was saved. `data` : Object An object containing the data that is to be saved. The object will contain a key for each appropriate action, with an array of records for each action. | Store
- | update : ( `Store this`, `Ext.data.Record record`, `String operation` ) Fires when a Record has been updated Fires when a Record has been updated Listeners will be called with the following arguments: `this` : Store `record` : Ext.data.Record The Record that was updated `operation` : String The update operation being performed. Value may be one of:
      Ext.data.Record.EDIT
           Ext.data.Record.REJECT
           Ext.data.Record.COMMIT
| Store
| write : ( `Ext.data.Store store`, `String action`, `Object result`, `Ext.Direct.Transaction res`, `Record/Record[] rs` ) Fires if the server returns 200 after an Ext.data.Api.actions CRUD action. Success of the action is determined in the... Fires if the server returns 200 after an Ext.data.Api.actions CRUD action. Success of the action is determined in the `result['successProperty']`property (NOTE for RESTful stores, a simple 20x response is sufficient for the actions "destroy" and "update". The "create" action should should return 200 along with a database pk). Listeners will be called with the following arguments: `store` : Ext.data.Store `action` : String [Ext.data.Api.actions.create|update|destroy] `result` : Object The 'data' picked-out out of the response for convenience. `res` : Ext.Direct.Transaction `rs` : Record/Record[] Store's records, the subject(s) of the write-action | Store