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- <title>The source code</title>
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- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.0.3
- * Copyright(c) 2006-2009 Ext JS, LLC
- * licensing@extjs.com
- * http://www.extjs.com/license
- */
-<div id="cls-Ext.data.DataWriter"></div>/**
+<html>\r
+<head>\r
+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> \r
+ <title>The source code</title>\r
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+<body onload="prettyPrint();">\r
+ <pre class="prettyprint lang-js"><div id="cls-Ext.data.DataWriter"></div>/**
* @class Ext.data.DataWriter
* <p>Ext.data.DataWriter facilitates create, update, and destroy actions between
* an Ext.data.Store and a server-side framework. A Writer enabled Store will
* {@link Ext.data.JsonWriter}.</p>
* <p>Creating a writer is simple:</p>
* <pre><code>
-var writer = new Ext.data.JsonWriter();
+var writer = new Ext.data.JsonWriter({
+ encode: false // <--- false causes data to be printed to jsonData config-property of Ext.Ajax#reqeust
+});
* </code></pre>
+ * * <p>Same old JsonReader as Ext-2.x:</p>
+ * <pre><code>
+var reader = new Ext.data.JsonReader({idProperty: 'id'}, [{name: 'first'}, {name: 'last'}, {name: 'email'}]);
+ * </code></pre>
+ *
* <p>The proxy for a writer enabled store can be configured with a simple <code>url</code>:</p>
* <pre><code>
// Create a standard HttpProxy instance.
var proxy = new Ext.data.HttpProxy({
- url: 'app.php/users'
+ url: 'app.php/users' // <--- Supports "provides"-type urls, such as '/users.json', '/products.xml' (Hello Rails/Merb)
});
* </code></pre>
- * <p>For finer grained control, the proxy may also be configured with an <code>api</code>:</p>
+ * <p>For finer grained control, the proxy may also be configured with an <code>API</code>:</p>
* <pre><code>
-// Use the api specification
+// Maximum flexibility with the API-configuration
var proxy = new Ext.data.HttpProxy({
api: {
read : 'app.php/users/read',
create : 'app.php/users/create',
update : 'app.php/users/update',
- destroy : 'app.php/users/destroy'
+ destroy : { // <--- Supports object-syntax as well
+ url: 'app.php/users/destroy',
+ method: "DELETE"
+ }
}
});
* </code></pre>
- * <p>Creating a Writer enabled store:</p>
+ * <p>Pulling it all together into a Writer-enabled Store:</p>
+ * <pre><code>
+var store = new Ext.data.Store({
+ proxy: proxy,
+ reader: reader,
+ writer: writer,
+ autoLoad: true,
+ autoSave: true // -- Cell-level updates.
+});
+ * </code></pre>
+ * <p>Initiating write-actions <b>automatically</b>, using the existing Ext2.0 Store/Record API:</p>
+ * <pre><code>
+var rec = store.getAt(0);
+rec.set('email', 'foo@bar.com'); // <--- Immediately initiates an UPDATE action through configured proxy.
+
+store.remove(rec); // <---- Immediately initiates a DESTROY action through configured proxy.
+ * </code></pre>
+ * <p>For <b>record/batch</b> updates, use the Store-configuration {@link Ext.data.Store#autoSave autoSave:false}</p>
* <pre><code>
var store = new Ext.data.Store({
proxy: proxy,
reader: reader,
- writer: writer
+ writer: writer,
+ autoLoad: true,
+ autoSave: false // -- disable cell-updates
});
+
+var urec = store.getAt(0);
+urec.set('email', 'foo@bar.com');
+
+var drec = store.getAt(1);
+store.remove(drec);
+
+// Push the button!
+store.save();
* </code></pre>
* @constructor Create a new DataWriter
* @param {Object} meta Metadata configuration options (implementation-specific)
*/
listful : false, // <-- listful is actually not used internally here in DataWriter. @see Ext.data.Store#execute.
- <div id="method-Ext.data.DataWriter-write"></div>/**
- * Writes data in preparation for server-write action. Simply proxies to DataWriter#update, DataWriter#create
- * DataWriter#destroy.
- * @param {String} action [CREATE|UPDATE|DESTROY]
- * @param {Object} params The params-hash to write-to
- * @param {Record/Record[]} rs The recordset write.
+ <div id="method-Ext.data.DataWriter-apply"></div>/**
+ * Compiles a Store recordset into a data-format defined by an extension such as {@link Ext.data.JsonWriter} or {@link Ext.data.XmlWriter} in preparation for a {@link Ext.data.Api#actions server-write action}. The first two params are similar similar in nature to {@link Ext#apply},
+ * Where the first parameter is the <i>receiver</i> of paramaters and the second, baseParams, <i>the source</i>.
+ * @param {Object} params The request-params receiver.
+ * @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}.
+ * @param {String} action [{@link Ext.data.Api#actions create|update|destroy}]
+ * @param {Record/Record[]} rs The recordset to write, the subject(s) of the write action.
*/
- write : function(action, params, rs) {
+ apply : function(params, baseParams, action, rs) {
var data = [],
renderer = action + 'Record';
// TODO implement @cfg listful here
else if (rs instanceof Ext.data.Record) {
data = this[renderer](rs);
}
- this.render(action, rs, params, data);
+ this.render(params, baseParams, data);
},
<div id="method-Ext.data.DataWriter-render"></div>/**
*/
destroyRecord : Ext.emptyFn,
- /**
- * Converts a Record to a hash.
- * @param {Record}
- * @private
+ <div id="method-Ext.data.DataWriter-toHash"></div>/**
+ * Converts a Record to a hash, taking into account the state of the Ext.data.Record along with configuration properties
+ * related to its rendering, such as {@link #writeAllFields}, {@link Ext.data.Record#phantom phantom}, {@link Ext.data.Record#getChanges getChanges} and
+ * {@link Ext.data.DataReader#idProperty idProperty}
+ * @param {Ext.data.Record}
+ * @param {Object} config <b>NOT YET IMPLEMENTED</b>. Will implement an exlude/only configuration for fine-control over which fields do/don't get rendered.
+ * @return {Object}
+ * @protected
+ * TODO Implement excludes/only configuration with 2nd param?
*/
- toHash : function(rec) {
+ toHash : function(rec, config) {
var map = rec.fields.map,
data = {},
raw = (this.writeAllFields === false && rec.phantom === false) ? rec.getChanges() : rec.data,
data[this.meta.idProperty] = rec.id
}
return data;
+ },
+
+ <div id="method-Ext.data.DataWriter-toArray"></div>/**
+ * Converts a {@link Ext.data.DataWriter#toHash Hashed} {@link Ext.data.Record} to fields-array array suitable
+ * for encoding to xml via XTemplate, eg:
+<code><pre><tpl for="."><{name}>{value}</{name}</tpl></pre></code>
+ * eg, <b>non-phantom</b>:
+<code><pre>{id: 1, first: 'foo', last: 'bar'} --> [{name: 'id', value: 1}, {name: 'first', value: 'foo'}, {name: 'last', value: 'bar'}]</pre></code>
+ * {@link Ext.data.Record#phantom Phantom} records will have had their idProperty omitted in {@link #toHash} if determined to be auto-generated.
+ * Non AUTOINCREMENT pks should have been protected.
+ * @param {Hash} data Hashed by Ext.data.DataWriter#toHash
+ * @return {[Object]} Array of attribute-objects.
+ * @protected
+ */
+ toArray : function(data) {
+ var fields = [];
+ Ext.iterate(data, function(k, v) {fields.push({name: k, value: v});},this);
+ return fields;
}
-};</pre>
-</body>
+};</pre> \r
+</body>\r
</html>
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