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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.Record"></div>/**
16 * @class Ext.data.Record
17 * <p>Instances of this class encapsulate both Record <em>definition</em> information, and Record
18 * <em>value</em> information for use in {@link Ext.data.Store} objects, or any code which needs
19 * to access Records cached in an {@link Ext.data.Store} object.</p>
20 * <p>Constructors for this class are generated by passing an Array of field definition objects to {@link #create}.
21 * Instances are usually only created by {@link Ext.data.Reader} implementations when processing unformatted data
23 * <p>Note that an instance of a Record class may only belong to one {@link Ext.data.Store Store} at a time.
24 * In order to copy data from one Store to another, use the {@link #copy} method to create an exact
25 * copy of the Record, and insert the new instance into the other Store.</p>
26 * <p>When serializing a Record for submission to the server, be aware that it contains many private
27 * properties, and also a reference to its owning Store which in turn holds references to its Records.
28 * This means that a whole Record may not be encoded using {@link Ext.util.JSON.encode}. Instead, use the
29 * <code>{@link #data}</code> and <code>{@link #id}</code> properties.</p>
30 * <p>Record objects generated by this constructor inherit all the methods of Ext.data.Record listed below.</p>
32 * <p>This constructor should not be used to create Record objects. Instead, use {@link #create} to
33 * generate a subclass of Ext.data.Record configured with information about its constituent fields.<p>
34 * <p><b>The generated constructor has the same signature as this constructor.</b></p>
35 * @param {Object} data (Optional) An object, the properties of which provide values for the new Record's
36 * fields. If not specified the <code>{@link Ext.data.Field#defaultValue defaultValue}</code>
37 * for each field will be assigned.
38 * @param {Object} id (Optional) The id of the Record. The id is used by the
39 * {@link Ext.data.Store} object which owns the Record to index its collection
40 * of Records (therefore this id should be unique within each store). If an
41 * <code>id</code> is not specified a <b><code>{@link #phantom}</code></b>
42 * Record will be created with an {@link #Record.id automatically generated id}.
44 Ext.data.Record = function(data, id){
45 // if no id, call the auto id method
46 this.id = (id || id === 0) ? id : Ext.data.Record.id(this);
47 this.data = data || {};
50 <div id="method-Ext.data.Record-create"></div>/**
51 * Generate a constructor for a specific Record layout.
52 * @param {Array} o An Array of <b>{@link Ext.data.Field Field}</b> definition objects.
53 * The constructor generated by this method may be used to create new Record instances. The data
54 * object must contain properties named after the {@link Ext.data.Field field}
55 * <b><tt>{@link Ext.data.Field#name}s</tt></b>. Example usage:<pre><code>
56 // create a Record constructor from a description of the fields
57 var TopicRecord = Ext.data.Record.create([ // creates a subclass of Ext.data.Record
58 {{@link Ext.data.Field#name name}: 'title', {@link Ext.data.Field#mapping mapping}: 'topic_title'},
59 {name: 'author', mapping: 'username', allowBlank: false},
60 {name: 'totalPosts', mapping: 'topic_replies', type: 'int'},
61 {name: 'lastPost', mapping: 'post_time', type: 'date'},
62 {name: 'lastPoster', mapping: 'user2'},
63 {name: 'excerpt', mapping: 'post_text', allowBlank: false},
64 // In the simplest case, if no properties other than <tt>name</tt> are required,
65 // a field definition may consist of just a String for the field name.
69 // create Record instance
70 var myNewRecord = new TopicRecord(
72 title: 'Do my job please',
77 excerpt: 'No way dude!',
80 id // optionally specify the id of the record otherwise {@link #Record.id one is auto-assigned}
82 myStore.{@link Ext.data.Store#add add}(myNewRecord);
85 * @return {Function} A constructor which is used to create new Records according
86 * to the definition. The constructor has the same signature as {@link #Record}.
89 Ext.data.Record.create = function(o){
90 var f = Ext.extend(Ext.data.Record, {});
92 p.fields = new Ext.util.MixedCollection(false, function(field){
95 for(var i = 0, len = o.length; i < len; i++){
96 p.fields.add(new Ext.data.Field(o[i]));
98 f.getField = function(name){
99 return p.fields.get(name);
104 Ext.data.Record.PREFIX = 'ext-record';
105 Ext.data.Record.AUTO_ID = 1;
106 Ext.data.Record.EDIT = 'edit';
107 Ext.data.Record.REJECT = 'reject';
108 Ext.data.Record.COMMIT = 'commit';
111 <div id="method-Ext.data.Record-Record.id"></div>/**
112 * Generates a sequential id. This method is typically called when a record is {@link #create}d
113 * and {@link #Record no id has been specified}. The returned id takes the form:
114 * <tt>{PREFIX}-{AUTO_ID}</tt>.<div class="mdetail-params"><ul>
115 * <li><b><tt>PREFIX</tt></b> : String<p class="sub-desc"><tt>Ext.data.Record.PREFIX</tt>
116 * (defaults to <tt>'ext-record'</tt>)</p></li>
117 * <li><b><tt>AUTO_ID</tt></b> : String<p class="sub-desc"><tt>Ext.data.Record.AUTO_ID</tt>
118 * (defaults to <tt>1</tt> initially)</p></li>
120 * @param {Record} rec The record being created. The record does not exist, it's a {@link #phantom}.
121 * @return {String} auto-generated string id, <tt>"ext-record-i++'</tt>;
123 Ext.data.Record.id = function(rec) {
125 return [Ext.data.Record.PREFIX, '-', Ext.data.Record.AUTO_ID++].join('');
128 Ext.data.Record.prototype = {
129 <div id="prop-Ext.data.Record-fields"></div>/**
130 * <p><b>This property is stored in the Record definition's <u>prototype</u></b></p>
131 * A MixedCollection containing the defined {@link Ext.data.Field Field}s for this Record. Read-only.
133 * @type Ext.util.MixedCollection
135 <div id="prop-Ext.data.Record-data"></div>/**
136 * An object hash representing the data for this Record. Every field name in the Record definition
137 * is represented by a property of that name in this object. Note that unless you specified a field
138 * with {@link Ext.data.Field#name name} "id" in the Record definition, this will <b>not</b> contain
139 * an <tt>id</tt> property.
143 <div id="prop-Ext.data.Record-id"></div>/**
144 * The unique ID of the Record {@link #Record as specified at construction time}.
148 <div id="prop-Ext.data.Record-node"></div>/**
149 * <p><b>Only present if this Record was created by an {@link Ext.data.XmlReader XmlReader}</b>.</p>
150 * <p>The XML element which was the source of the data for this Record.</p>
154 <div id="prop-Ext.data.Record-json"></div>/**
155 * <p><b>Only present if this Record was created by an {@link Ext.data.ArrayReader ArrayReader} or a {@link Ext.data.JsonReader JsonReader}</b>.</p>
156 * <p>The Array or object which was the source of the data for this Record.</p>
158 * @type {Array|Object}
160 <div id="prop-Ext.data.Record-dirty"></div>/**
161 * Readonly flag - true if this Record has been modified.
167 <div id="prop-Ext.data.Record-modified"></div>/**
168 * This object contains a key and value storing the original values of all modified
169 * fields or is null if no fields have been modified.
174 <div id="prop-Ext.data.Record-phantom"></div>/**
175 * <tt>true</tt> when the record does not yet exist in a server-side database (see
176 * {@link #markDirty}). Any record which has a real database pk set as its id property
177 * is NOT a phantom -- it's real.
184 join : function(store){
185 <div id="prop-Ext.data.Record-store"></div>/**
186 * The {@link Ext.data.Store} to which this Record belongs.
188 * @type {Ext.data.Store}
193 <div id="method-Ext.data.Record-set"></div>/**
194 * Set the {@link Ext.data.Field#name named field} to the specified value. For example:
196 // record has a field named 'firstname'
197 var Employee = Ext.data.Record.{@link #create}([
202 // update the 2nd record in the store:
203 var rec = myStore.{@link Ext.data.Store#getAt getAt}(1);
205 // set the value (shows dirty flag):
206 rec.set('firstname', 'Betty');
208 // commit the change (removes dirty flag):
209 rec.{@link #commit}();
211 // update the record in the store, bypass setting dirty flag,
212 // and do not store the change in the {@link Ext.data.Store#getModifiedRecords modified records}
213 rec.{@link #data}['firstname'] = 'Wilma'; // updates record, but not the view
214 rec.{@link #commit}(); // updates the view
216 * <b>Notes</b>:<div class="mdetail-params"><ul>
217 * <li>If the store has a writer and <code>autoSave=true</code>, each set()
218 * will execute an XHR to the server.</li>
219 * <li>Use <code>{@link #beginEdit}</code> to prevent the store's <code>update</code>
220 * event firing while using set().</li>
221 * <li>Use <code>{@link #endEdit}</code> to have the store's <code>update</code>
224 * @param {String} name The {@link Ext.data.Field#name name of the field} to set.
225 * @param {String/Object/Array} value The value to set the field to.
227 set : function(name, value){
228 var encode = Ext.isPrimitive(value) ? String : Ext.encode;
229 if(encode(this.data[name]) == encode(value)) {
236 if(this.modified[name] === undefined){
237 this.modified[name] = this.data[name];
239 this.data[name] = value;
246 afterEdit : function(){
247 if (this.store != undefined && typeof this.store.afterEdit == "function") {
248 this.store.afterEdit(this);
253 afterReject : function(){
255 this.store.afterReject(this);
260 afterCommit : function(){
262 this.store.afterCommit(this);
266 <div id="method-Ext.data.Record-get"></div>/**
267 * Get the value of the {@link Ext.data.Field#name named field}.
268 * @param {String} name The {@link Ext.data.Field#name name of the field} to get the value of.
269 * @return {Object} The value of the field.
271 get : function(name){
272 return this.data[name];
275 <div id="method-Ext.data.Record-beginEdit"></div>/**
276 * Begin an edit. While in edit mode, no events (e.g.. the <code>update</code> event)
277 * are relayed to the containing store.
278 * See also: <code>{@link #endEdit}</code> and <code>{@link #cancelEdit}</code>.
280 beginEdit : function(){
282 this.modified = this.modified || {};
285 <div id="method-Ext.data.Record-cancelEdit"></div>/**
286 * Cancels all changes made in the current edit operation.
288 cancelEdit : function(){
289 this.editing = false;
290 delete this.modified;
293 <div id="method-Ext.data.Record-endEdit"></div>/**
294 * End an edit. If any data was modified, the containing store is notified
295 * (ie, the store's <code>update</code> event will fire).
297 endEdit : function(){
298 this.editing = false;
304 <div id="method-Ext.data.Record-reject"></div>/**
305 * Usually called by the {@link Ext.data.Store} which owns the Record.
306 * Rejects all changes made to the Record since either creation, or the last commit operation.
307 * Modified fields are reverted to their original values.
308 * <p>Developers should subscribe to the {@link Ext.data.Store#update} event
309 * to have their code notified of reject operations.</p>
310 * @param {Boolean} silent (optional) True to skip notification of the owning
311 * store of the change (defaults to false)
313 reject : function(silent){
314 var m = this.modified;
316 if(typeof m[n] != "function"){
321 delete this.modified;
322 this.editing = false;
328 <div id="method-Ext.data.Record-commit"></div>/**
329 * Usually called by the {@link Ext.data.Store} which owns the Record.
330 * Commits all changes made to the Record since either creation, or the last commit operation.
331 * <p>Developers should subscribe to the {@link Ext.data.Store#update} event
332 * to have their code notified of commit operations.</p>
333 * @param {Boolean} silent (optional) True to skip notification of the owning
334 * store of the change (defaults to false)
336 commit : function(silent){
338 delete this.modified;
339 this.editing = false;
345 <div id="method-Ext.data.Record-getChanges"></div>/**
346 * Gets a hash of only the fields that have been modified since this Record was created or commited.
349 getChanges : function(){
350 var m = this.modified, cs = {};
352 if(m.hasOwnProperty(n)){
353 cs[n] = this.data[n];
360 hasError : function(){
361 return this.error !== null;
365 clearError : function(){
369 <div id="method-Ext.data.Record-copy"></div>/**
370 * Creates a copy (clone) of this Record.
371 * @param {String} id (optional) A new Record id, defaults to the id
372 * of the record being copied. See <code>{@link #id}</code>.
373 * To generate a phantom record with a new id use:<pre><code>
374 var rec = record.copy(); // clone the record
375 Ext.data.Record.id(rec); // automatically generate a unique sequential id
379 copy : function(newId) {
380 return new this.constructor(Ext.apply({}, this.data), newId || this.id);
383 <div id="method-Ext.data.Record-isModified"></div>/**
384 * Returns <tt>true</tt> if the passed field name has been <code>{@link #modified}</code>
385 * since the load or last commit.
386 * @param {String} fieldName {@link Ext.data.Field.{@link Ext.data.Field#name}
389 isModified : function(fieldName){
390 return !!(this.modified && this.modified.hasOwnProperty(fieldName));
393 <div id="method-Ext.data.Record-isValid"></div>/**
394 * By default returns <tt>false</tt> if any {@link Ext.data.Field field} within the
395 * record configured with <tt>{@link Ext.data.Field#allowBlank} = false</tt> returns
396 * <tt>true</tt> from an {@link Ext}.{@link Ext#isEmpty isempty} test.
399 isValid : function() {
400 return this.fields.find(function(f) {
401 return (f.allowBlank === false && Ext.isEmpty(this.data[f.name])) ? true : false;
402 },this) ? false : true;
405 <div id="method-Ext.data.Record-markDirty"></div>/**
406 * <p>Marks this <b>Record</b> as <code>{@link #dirty}</code>. This method
407 * is used interally when adding <code>{@link #phantom}</code> records to a
408 * {@link Ext.data.Store#writer writer enabled store}.</p>
409 * <br><p>Marking a record <code>{@link #dirty}</code> causes the phantom to
410 * be returned by {@link Ext.data.Store#getModifiedRecords} where it will
411 * have a create action composed for it during {@link Ext.data.Store#save store save}
414 markDirty : function(){
419 this.fields.each(function(f) {
420 this.modified[f.name] = this.data[f.name];