-/*!
- * Ext JS Library 3.2.0
- * Copyright(c) 2006-2010 Ext JS, Inc.
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
-/**
- * @class Ext.data.DataProxy
- * @extends Ext.util.Observable
- * <p>Abstract base class for implementations which provide retrieval of unformatted data objects.
- * This class is intended to be extended and should not be created directly. For existing implementations,
- * see {@link Ext.data.DirectProxy}, {@link Ext.data.HttpProxy}, {@link Ext.data.ScriptTagProxy} and
- * {@link Ext.data.MemoryProxy}.</p>
- * <p>DataProxy implementations are usually used in conjunction with an implementation of {@link Ext.data.DataReader}
- * (of the appropriate type which knows how to parse the data object) to provide a block of
- * {@link Ext.data.Records} to an {@link Ext.data.Store}.</p>
- * <p>The parameter to a DataProxy constructor may be an {@link Ext.data.Connection} or can also be the
- * config object to an {@link Ext.data.Connection}.</p>
- * <p>Custom implementations must implement either the <code><b>doRequest</b></code> method (preferred) or the
- * <code>load</code> method (deprecated). See
- * {@link Ext.data.HttpProxy}.{@link Ext.data.HttpProxy#doRequest doRequest} or
- * {@link Ext.data.HttpProxy}.{@link Ext.data.HttpProxy#load load} for additional details.</p>
- * <p><b><u>Example 1</u></b></p>
- * <pre><code>
-proxy: new Ext.data.ScriptTagProxy({
- {@link Ext.data.Connection#url url}: 'http://extjs.com/forum/topics-remote.php'
-}),
- * </code></pre>
- * <p><b><u>Example 2</u></b></p>
- * <pre><code>
-proxy : new Ext.data.HttpProxy({
- {@link Ext.data.Connection#method method}: 'GET',
- {@link Ext.data.HttpProxy#prettyUrls prettyUrls}: false,
- {@link Ext.data.Connection#url url}: 'local/default.php', // see options parameter for {@link Ext.Ajax#request}
- {@link #api}: {
- // all actions except the following will use above url
- create : 'local/new.php',
- update : 'local/update.php'
- }
-}),
- * </code></pre>
- * <p>And <b>new in Ext version 3</b>, attach centralized event-listeners upon the DataProxy class itself! This is a great place
- * to implement a <i>messaging system</i> to centralize your application's user-feedback and error-handling.</p>
- * <pre><code>
-// Listen to all "beforewrite" event fired by all proxies.
-Ext.data.DataProxy.on('beforewrite', function(proxy, action) {
- console.log('beforewrite: ', action);
-});
-
-// Listen to "write" event fired by all proxies
-Ext.data.DataProxy.on('write', function(proxy, action, data, res, rs) {
- console.info('write: ', action);
-});
-
-// Listen to "exception" event fired by all proxies
-Ext.data.DataProxy.on('exception', function(proxy, type, action) {
- console.error(type + action + ' exception);
-});
- * </code></pre>
- * <b>Note:</b> These three events are all fired with the signature of the corresponding <i>DataProxy instance</i> event {@link #beforewrite beforewrite}, {@link #write write} and {@link #exception exception}.
- */
-Ext.data.DataProxy = function(conn){
- // make sure we have a config object here to support ux proxies.
- // All proxies should now send config into superclass constructor.
- conn = conn || {};
-
- // This line caused a bug when people use custom Connection object having its own request method.
- // http://extjs.com/forum/showthread.php?t=67194. Have to set DataProxy config
- //Ext.applyIf(this, conn);
-
- this.api = conn.api;
- this.url = conn.url;
- this.restful = conn.restful;
- this.listeners = conn.listeners;
-
- // deprecated
- this.prettyUrls = conn.prettyUrls;
-
- /**
- * @cfg {Object} api
- * Specific urls to call on CRUD action methods "read", "create", "update" and "destroy".
- * Defaults to:<pre><code>
-api: {
- read : undefined,
- create : undefined,
- update : undefined,
- destroy : undefined
-}
- * </code></pre>
- * <p>The url is built based upon the action being executed <tt>[load|create|save|destroy]</tt>
- * using the commensurate <tt>{@link #api}</tt> property, or if undefined default to the
- * configured {@link Ext.data.Store}.{@link Ext.data.Store#url url}.</p><br>
- * <p>For example:</p>
- * <pre><code>
-api: {
- load : '/controller/load',
- create : '/controller/new', // Server MUST return idProperty of new record
- save : '/controller/update',
- destroy : '/controller/destroy_action'
-}
-
-// Alternatively, one can use the object-form to specify each API-action
-api: {
- load: {url: 'read.php', method: 'GET'},
- create: 'create.php',
- destroy: 'destroy.php',
- save: 'update.php'
-}
- * </code></pre>
- * <p>If the specific URL for a given CRUD action is undefined, the CRUD action request
- * will be directed to the configured <tt>{@link Ext.data.Connection#url url}</tt>.</p>
- * <br><p><b>Note</b>: To modify the URL for an action dynamically the appropriate API
- * property should be modified before the action is requested using the corresponding before
- * action event. For example to modify the URL associated with the load action:
- * <pre><code>
-// modify the url for the action
-myStore.on({
- beforeload: {
- fn: function (store, options) {
- // use <tt>{@link Ext.data.HttpProxy#setUrl setUrl}</tt> to change the URL for *just* this request.
- store.proxy.setUrl('changed1.php');
-
- // set optional second parameter to true to make this URL change
- // permanent, applying this URL for all subsequent requests.
- store.proxy.setUrl('changed1.php', true);
-
- // Altering the proxy API should be done using the public
- // method <tt>{@link Ext.data.DataProxy#setApi setApi}</tt>.
- store.proxy.setApi('read', 'changed2.php');
-
- // Or set the entire API with a config-object.
- // When using the config-object option, you must redefine the <b>entire</b>
- // API -- not just a specific action of it.
- store.proxy.setApi({
- read : 'changed_read.php',
- create : 'changed_create.php',
- update : 'changed_update.php',
- destroy : 'changed_destroy.php'
- });
- }
- }
-});
- * </code></pre>
- * </p>
- */
-
- this.addEvents(
- /**
- * @event exception
- * <p>Fires if an exception occurs in the Proxy during a remote request. This event is relayed
- * through a corresponding {@link Ext.data.Store}.{@link Ext.data.Store#exception exception},
- * so any Store instance may observe this event.</p>
- * <p>In addition to being fired through the DataProxy instance that raised the event, this event is also fired
- * through the Ext.data.DataProxy <i>class</i> to allow for centralized processing of exception events from <b>all</b>
- * DataProxies by attaching a listener to the Ext.data.Proxy class itself.</p>
- * <p>This event can be fired for one of two reasons:</p>
- * <div class="mdetail-params"><ul>
- * <li>remote-request <b>failed</b> : <div class="sub-desc">
- * The server did not return status === 200.
- * </div></li>
- * <li>remote-request <b>succeeded</b> : <div class="sub-desc">
- * The remote-request succeeded but the reader could not read the response.
- * This means the server returned data, but the configured Reader threw an
- * error while reading the response. In this case, this event will be
- * raised and the caught error will be passed along into this event.
- * </div></li>
- * </ul></div>
- * <br><p>This event fires with two different contexts based upon the 2nd
- * parameter <tt>type [remote|response]</tt>. The first four parameters
- * are identical between the two contexts -- only the final two parameters
- * differ.</p>
- * @param {DataProxy} this The proxy that sent the request
- * @param {String} type
- * <p>The value of this parameter will be either <tt>'response'</tt> or <tt>'remote'</tt>.</p>
- * <div class="mdetail-params"><ul>
- * <li><b><tt>'response'</tt></b> : <div class="sub-desc">
- * <p>An <b>invalid</b> response from the server was returned: either 404,
- * 500 or the response meta-data does not match that defined in the DataReader
- * (e.g.: root, idProperty, successProperty).</p>
- * </div></li>
- * <li><b><tt>'remote'</tt></b> : <div class="sub-desc">
- * <p>A <b>valid</b> response was returned from the server having
- * successProperty === false. This response might contain an error-message
- * sent from the server. For example, the user may have failed
- * authentication/authorization or a database validation error occurred.</p>
- * </div></li>
- * </ul></div>
- * @param {String} action Name of the action (see {@link Ext.data.Api#actions}.
- * @param {Object} options The options for the action that were specified in the {@link #request}.
- * @param {Object} response
- * <p>The value of this parameter depends on the value of the <code>type</code> parameter:</p>
- * <div class="mdetail-params"><ul>
- * <li><b><tt>'response'</tt></b> : <div class="sub-desc">
- * <p>The raw browser response object (e.g.: XMLHttpRequest)</p>
- * </div></li>
- * <li><b><tt>'remote'</tt></b> : <div class="sub-desc">
- * <p>The decoded response object sent from the server.</p>
- * </div></li>
- * </ul></div>
- * @param {Mixed} arg
- * <p>The type and value of this parameter depends on the value of the <code>type</code> parameter:</p>
- * <div class="mdetail-params"><ul>
- * <li><b><tt>'response'</tt></b> : Error<div class="sub-desc">
- * <p>The JavaScript Error object caught if the configured Reader could not read the data.
- * If the remote request returns success===false, this parameter will be null.</p>
- * </div></li>
- * <li><b><tt>'remote'</tt></b> : Record/Record[]<div class="sub-desc">
- * <p>This parameter will only exist if the <tt>action</tt> was a <b>write</b> action
- * (Ext.data.Api.actions.create|update|destroy).</p>
- * </div></li>
- * </ul></div>
- */
- 'exception',
- /**
- * @event beforeload
- * Fires before a request to retrieve a data object.
- * @param {DataProxy} this The proxy for the request
- * @param {Object} params The params object passed to the {@link #request} function
- */
- 'beforeload',
- /**
- * @event load
- * Fires before the load method's callback is called.
- * @param {DataProxy} this The proxy for the request
- * @param {Object} o The request transaction object
- * @param {Object} options The callback's <tt>options</tt> property as passed to the {@link #request} function
- */
- 'load',
- /**
- * @event loadexception
- * <p>This event is <b>deprecated</b>. The signature of the loadexception event
- * varies depending on the proxy, use the catch-all {@link #exception} event instead.
- * This event will fire in addition to the {@link #exception} event.</p>
- * @param {misc} misc See {@link #exception}.
- * @deprecated
- */
- 'loadexception',
- /**
- * @event beforewrite
- * <p>Fires before a request is generated for one of the actions Ext.data.Api.actions.create|update|destroy</p>
- * <p>In addition to being fired through the DataProxy instance that raised the event, this event is also fired
- * through the Ext.data.DataProxy <i>class</i> to allow for centralized processing of beforewrite events from <b>all</b>
- * DataProxies by attaching a listener to the Ext.data.Proxy class itself.</p>
- * @param {DataProxy} this The proxy for the request
- * @param {String} action [Ext.data.Api.actions.create|update|destroy]
- * @param {Record/Record[]} rs The Record(s) to create|update|destroy.
- * @param {Object} params The request <code>params</code> object. Edit <code>params</code> to add parameters to the request.
- */
- 'beforewrite',
- /**
- * @event write
- * <p>Fires before the request-callback is called</p>
- * <p>In addition to being fired through the DataProxy instance that raised the event, this event is also fired
- * through the Ext.data.DataProxy <i>class</i> to allow for centralized processing of write events from <b>all</b>
- * DataProxies by attaching a listener to the Ext.data.Proxy class itself.</p>
- * @param {DataProxy} this The proxy that sent the request
- * @param {String} action [Ext.data.Api.actions.create|upate|destroy]
- * @param {Object} data The data object extracted from the server-response
- * @param {Object} response The decoded response from server
- * @param {Record/Record[]} rs The Record(s) from Store
- * @param {Object} options The callback's <tt>options</tt> property as passed to the {@link #request} function
- */
- 'write'
- );
- Ext.data.DataProxy.superclass.constructor.call(this);
-
- // Prepare the proxy api. Ensures all API-actions are defined with the Object-form.
- try {
- Ext.data.Api.prepare(this);
- } catch (e) {
- if (e instanceof Ext.data.Api.Error) {
- e.toConsole();
- }
- }
- // relay each proxy's events onto Ext.data.DataProxy class for centralized Proxy-listening
- Ext.data.DataProxy.relayEvents(this, ['beforewrite', 'write', 'exception']);
-};
-
-Ext.extend(Ext.data.DataProxy, Ext.util.Observable, {
- /**
- * @cfg {Boolean} restful
- * <p>Defaults to <tt>false</tt>. Set to <tt>true</tt> to operate in a RESTful manner.</p>
- * <br><p> Note: this parameter will automatically be set to <tt>true</tt> if the
- * {@link Ext.data.Store} it is plugged into is set to <code>restful: true</code>. If the
- * Store is RESTful, there is no need to set this option on the proxy.</p>
- * <br><p>RESTful implementations enable the serverside framework to automatically route
- * actions sent to one url based upon the HTTP method, for example:
- * <pre><code>
-store: new Ext.data.Store({
- restful: true,
- proxy: new Ext.data.HttpProxy({url:'/users'}); // all requests sent to /users
- ...
-)}
- * </code></pre>
- * If there is no <code>{@link #api}</code> specified in the configuration of the proxy,
- * all requests will be marshalled to a single RESTful url (/users) so the serverside
- * framework can inspect the HTTP Method and act accordingly:
- * <pre>
-<u>Method</u> <u>url</u> <u>action</u>
-POST /users create
-GET /users read
-PUT /users/23 update
-DESTROY /users/23 delete
- * </pre></p>
- * <p>If set to <tt>true</tt>, a {@link Ext.data.Record#phantom non-phantom} record's
- * {@link Ext.data.Record#id id} will be appended to the url. Some MVC (e.g., Ruby on Rails,
- * Merb and Django) support segment based urls where the segments in the URL follow the
- * Model-View-Controller approach:<pre><code>
- * someSite.com/controller/action/id
- * </code></pre>
- * Where the segments in the url are typically:<div class="mdetail-params"><ul>
- * <li>The first segment : represents the controller class that should be invoked.</li>
- * <li>The second segment : represents the class function, or method, that should be called.</li>
- * <li>The third segment : represents the ID (a variable typically passed to the method).</li>
- * </ul></div></p>
- * <br><p>Refer to <code>{@link Ext.data.DataProxy#api}</code> for additional information.</p>
- */
- restful: false,
-
- /**
- * <p>Redefines the Proxy's API or a single action of an API. Can be called with two method signatures.</p>
- * <p>If called with an object as the only parameter, the object should redefine the <b>entire</b> API, e.g.:</p><pre><code>
-proxy.setApi({
- read : '/users/read',
- create : '/users/create',
- update : '/users/update',
- destroy : '/users/destroy'
-});
-</code></pre>
- * <p>If called with two parameters, the first parameter should be a string specifying the API action to
- * redefine and the second parameter should be the URL (or function if using DirectProxy) to call for that action, e.g.:</p><pre><code>
-proxy.setApi(Ext.data.Api.actions.read, '/users/new_load_url');
-</code></pre>
- * @param {String/Object} api An API specification object, or the name of an action.
- * @param {String/Function} url The URL (or function if using DirectProxy) to call for the action.
- */
- setApi : function() {
- if (arguments.length == 1) {
- var valid = Ext.data.Api.isValid(arguments[0]);
- if (valid === true) {
- this.api = arguments[0];
- }
- else {
- throw new Ext.data.Api.Error('invalid', valid);
- }
- }
- else if (arguments.length == 2) {
- if (!Ext.data.Api.isAction(arguments[0])) {
- throw new Ext.data.Api.Error('invalid', arguments[0]);
- }
- this.api[arguments[0]] = arguments[1];
- }
- Ext.data.Api.prepare(this);
- },
-
- /**
- * Returns true if the specified action is defined as a unique action in the api-config.
- * request. If all API-actions are routed to unique urls, the xaction parameter is unecessary. However, if no api is defined
- * and all Proxy actions are routed to DataProxy#url, the server-side will require the xaction parameter to perform a switch to
- * the corresponding code for CRUD action.
- * @param {String [Ext.data.Api.CREATE|READ|UPDATE|DESTROY]} action
- * @return {Boolean}
- */
- isApiAction : function(action) {
- return (this.api[action]) ? true : false;
- },
-
- /**
- * All proxy actions are executed through this method. Automatically fires the "before" + action event
- * @param {String} action Name of the action
- * @param {Ext.data.Record/Ext.data.Record[]/null} rs Will be null when action is 'load'
- * @param {Object} params
- * @param {Ext.data.DataReader} reader
- * @param {Function} callback
- * @param {Object} scope The scope (<code>this</code> reference) in which the callback function is executed. Defaults to the Proxy object.
- * @param {Object} options Any options specified for the action (e.g. see {@link Ext.data.Store#load}.
- */
- request : function(action, rs, params, reader, callback, scope, options) {
- if (!this.api[action] && !this.load) {
- throw new Ext.data.DataProxy.Error('action-undefined', action);
- }
- params = params || {};
- if ((action === Ext.data.Api.actions.read) ? this.fireEvent("beforeload", this, params) : this.fireEvent("beforewrite", this, action, rs, params) !== false) {
- this.doRequest.apply(this, arguments);
- }
- else {
- callback.call(scope || this, null, options, false);
- }
- },
-
-
- /**
- * <b>Deprecated</b> load method using old method signature. See {@doRequest} for preferred method.
- * @deprecated
- * @param {Object} params
- * @param {Object} reader
- * @param {Object} callback
- * @param {Object} scope
- * @param {Object} arg
- */
- load : null,
-
- /**
- * @cfg {Function} doRequest Abstract method that should be implemented in all subclasses. <b>Note:</b> Should only be used by custom-proxy developers.
- * (e.g.: {@link Ext.data.HttpProxy#doRequest HttpProxy.doRequest},
- * {@link Ext.data.DirectProxy#doRequest DirectProxy.doRequest}).
- */
- doRequest : function(action, rs, params, reader, callback, scope, options) {
- // default implementation of doRequest for backwards compatibility with 2.0 proxies.
- // If we're executing here, the action is probably "load".
- // Call with the pre-3.0 method signature.
- this.load(params, reader, callback, scope, options);
- },
-
- /**
- * @cfg {Function} onRead Abstract method that should be implemented in all subclasses. <b>Note:</b> Should only be used by custom-proxy developers. Callback for read {@link Ext.data.Api#actions action}.
- * @param {String} action Action name as per {@link Ext.data.Api.actions#read}.
- * @param {Object} o The request transaction object
- * @param {Object} res The server response
- * @fires loadexception (deprecated)
- * @fires exception
- * @fires load
- * @protected
- */
- onRead : Ext.emptyFn,
- /**
- * @cfg {Function} onWrite Abstract method that should be implemented in all subclasses. <b>Note:</b> Should only be used by custom-proxy developers. Callback for <i>create, update and destroy</i> {@link Ext.data.Api#actions actions}.
- * @param {String} action [Ext.data.Api.actions.create|read|update|destroy]
- * @param {Object} trans The request transaction object
- * @param {Object} res The server response
- * @fires exception
- * @fires write
- * @protected
- */
- onWrite : Ext.emptyFn,
- /**
- * buildUrl
- * Sets the appropriate url based upon the action being executed. If restful is true, and only a single record is being acted upon,
- * url will be built Rails-style, as in "/controller/action/32". restful will aply iff the supplied record is an
- * instance of Ext.data.Record rather than an Array of them.
- * @param {String} action The api action being executed [read|create|update|destroy]
- * @param {Ext.data.Record/Ext.data.Record[]} record The record or Array of Records being acted upon.
- * @return {String} url
- * @private
- */
- buildUrl : function(action, record) {
- record = record || null;
-
- // conn.url gets nullified after each request. If it's NOT null here, that means the user must have intervened with a call
- // to DataProxy#setUrl or DataProxy#setApi and changed it before the request was executed. If that's the case, use conn.url,
- // otherwise, build the url from the api or this.url.
- var url = (this.conn && this.conn.url) ? this.conn.url : (this.api[action]) ? this.api[action].url : this.url;
- if (!url) {
- throw new Ext.data.Api.Error('invalid-url', action);
- }
-
- // look for urls having "provides" suffix used in some MVC frameworks like Rails/Merb and others. The provides suffice informs
- // the server what data-format the client is dealing with and returns data in the same format (eg: application/json, application/xml, etc)
- // e.g.: /users.json, /users.xml, etc.
- // with restful routes, we need urls like:
- // PUT /users/1.json
- // DELETE /users/1.json
- var provides = null;
- var m = url.match(/(.*)(\.json|\.xml|\.html)$/);
- if (m) {
- provides = m[2]; // eg ".json"
- url = m[1]; // eg: "/users"
- }
- // prettyUrls is deprectated in favor of restful-config
- if ((this.restful === true || this.prettyUrls === true) && record instanceof Ext.data.Record && !record.phantom) {
- url += '/' + record.id;
- }
- return (provides === null) ? url : url + provides;
- },
-
- /**
- * Destroys the proxy by purging any event listeners and cancelling any active requests.
- */
- destroy: function(){
- this.purgeListeners();
- }
-});
-
-// Apply the Observable prototype to the DataProxy class so that proxy instances can relay their
-// events to the class. Allows for centralized listening of all proxy instances upon the DataProxy class.
-Ext.apply(Ext.data.DataProxy, Ext.util.Observable.prototype);
-Ext.util.Observable.call(Ext.data.DataProxy);
-
-/**
- * @class Ext.data.DataProxy.Error
- * @extends Ext.Error
- * DataProxy Error extension.
- * constructor
- * @param {String} message Message describing the error.
- * @param {Record/Record[]} arg
- */
-Ext.data.DataProxy.Error = Ext.extend(Ext.Error, {
- constructor : function(message, arg) {
- this.arg = arg;
- Ext.Error.call(this, message);
- },
- name: 'Ext.data.DataProxy'
-});
-Ext.apply(Ext.data.DataProxy.Error.prototype, {
- lang: {
- 'action-undefined': "DataProxy attempted to execute an API-action but found an undefined url / function. Please review your Proxy url/api-configuration.",
- 'api-invalid': 'Recieved an invalid API-configuration. Please ensure your proxy API-configuration contains only the actions from Ext.data.Api.actions.'
- }
-});
-
-
git.ithinksw.org / extjs.git / blobdiff