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9 <pre class="prettyprint lang-js">/*!
10 * Ext JS Library 3.3.1
11 * Copyright(c) 2006-2010 Sencha Inc.
12 * licensing@sencha.com
13 * http://www.sencha.com/license
15 <div id="cls-Ext.data.JsonWriter"></div>/**
16 * @class Ext.data.JsonWriter
17 * @extends Ext.data.DataWriter
18 * DataWriter extension for writing an array or single {@link Ext.data.Record} object(s) in preparation for executing a remote CRUD action.
20 Ext.data.JsonWriter = Ext.extend(Ext.data.DataWriter, {
21 <div id="cfg-Ext.data.JsonWriter-encode"></div>/**
22 * @cfg {Boolean} encode <p><tt>true</tt> to {@link Ext.util.JSON#encode JSON encode} the
23 * {@link Ext.data.DataWriter#toHash hashed data} into a standard HTTP parameter named after this
24 * Reader's <code>meta.root</code> property which, by default is imported from the associated Reader. Defaults to <tt>true</tt>.</p>
25 * <p>If set to <code>false</code>, the hashed data is {@link Ext.util.JSON#encode JSON encoded}, along with
26 * the associated {@link Ext.data.Store}'s {@link Ext.data.Store#baseParams baseParams}, into the POST body.</p>
27 * <p>When using {@link Ext.data.DirectProxy}, set this to <tt>false</tt> since Ext.Direct.JsonProvider will perform
28 * its own json-encoding. In addition, if you're using {@link Ext.data.HttpProxy}, setting to <tt>false</tt>
29 * will cause HttpProxy to transmit data using the <b>jsonData</b> configuration-params of {@link Ext.Ajax#request}
30 * instead of <b>params</b>.</p>
31 * <p>When using a {@link Ext.data.Store#restful} Store, some serverside frameworks are
32 * tuned to expect data through the jsonData mechanism. In those cases, one will want to set <b>encode: <tt>false</tt></b>, as in
33 * let the lower-level connection object (eg: Ext.Ajax) do the encoding.</p>
36 <div id="cfg-Ext.data.JsonWriter-encodeDelete"></div>/**
37 * @cfg {Boolean} encodeDelete False to send only the id to the server on delete, true to encode it in an object
38 * literal, eg: <pre><code>
40 * </code></pre> Defaults to <tt>false</tt>
44 constructor : function(config){
45 Ext.data.JsonWriter.superclass.constructor.call(this, config);
48 <div id="method-Ext.data.JsonWriter-render"></div>/**
49 * <p>This method should not need to be called by application code, however it may be useful on occasion to
50 * override it, or augment it with an {@link Function#createInterceptor interceptor} or {@link Function#createSequence sequence}.</p>
51 * <p>The provided implementation encodes the serialized data representing the Store's modified Records into the Ajax request's
52 * <code>params</code> according to the <code>{@link #encode}</code> setting.</p>
53 * @param {Object} Ajax request params object to write into.
54 * @param {Object} baseParams as defined by {@link Ext.data.Store#baseParams}. The baseParms must be encoded by the extending class, eg: {@link Ext.data.JsonWriter}, {@link Ext.data.XmlWriter}.
55 * @param {Object/Object[]} data Data object representing the serialized modified records from the Store. May be either a single object,
56 * or an Array of objects - user implementations must handle both cases.
58 render : function(params, baseParams, data) {
59 if (this.encode === true) {
61 Ext.apply(params, baseParams);
62 params[this.meta.root] = Ext.encode(data);
64 // defer encoding for some other layer, probably in {@link Ext.Ajax#request}. Place everything into "jsonData" key.
65 var jdata = Ext.apply({}, baseParams);
66 jdata[this.meta.root] = data;
67 params.jsonData = jdata;
70 <div id="method-Ext.data.JsonWriter-createRecord"></div>/**
71 * Implements abstract Ext.data.DataWriter#createRecord
73 * @param {Ext.data.Record} rec
76 createRecord : function(rec) {
77 return this.toHash(rec);
79 <div id="method-Ext.data.JsonWriter-updateRecord"></div>/**
80 * Implements abstract Ext.data.DataWriter#updateRecord
82 * @param {Ext.data.Record} rec
85 updateRecord : function(rec) {
86 return this.toHash(rec);
89 <div id="method-Ext.data.JsonWriter-destroyRecord"></div>/**
90 * Implements abstract Ext.data.DataWriter#destroyRecord
92 * @param {Ext.data.Record} rec
95 destroyRecord : function(rec){
96 if(this.encodeDelete){
98 data[this.meta.idProperty] = rec.id;