1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Grid with DataWriter Example</title>
<link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" />
<!-- GC -->
<!-- LIBS -->
<script type="text/javascript" src="../../adapter/ext/ext-base.js"></script>
<!-- ENDLIBS -->
<script type="text/javascript" src="../../ext-all.js"></script>
<script type="text/javascript" src="../shared/extjs/App.js"></script>
<script type="text/javascript" src="writer.js"></script>
<script type="text/javascript" src="UserForm.js"></script>
<script type="text/javascript" src="UserGrid.js"></script>
<!-- Common Styles for the examples -->
<link rel="stylesheet" type="text/css" href="../shared/examples.css" />
<link rel="stylesheet" type="text/css" href="../shared/icons/silk.css" />
</head>
<body>
<script type="text/javascript" src="../shared/examples.js"></script><!-- EXAMPLES -->
<h1>Ext.data.DataWriter Example</h1>
<p>This example shows how to implement a Writer for your Store. A Writer-enabled Store frees you from having to manually compose Ajax requests
to perform CRUD actions on a Store.</p>
<p>Note that the js is not minified so it is readable. See <a href="writer.js">writer.js</a>, <a href="UserForm.js">UserForm.js</a> and
<a href="UserGrid.js">UserGrid.js</a>.</p>
<p>The HttpProxy plugged into the store in this example uses the new <em>api</em> configuration instead of an <em>url</em>.
A simple MVC-like php backend has been created for this example which simulates a database by storing records in $_SESSION. See the file /remote/app/controllers/users.php. You may have to configure
your web-server to allow scripts to be executed in the /examples directory.</p>
<code><pre>
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'
}
});
</pre></code>
<p>Take note of the requests being generated in Firebug as you interact with the Grid and Form.</p>
<p>An <b>Error has been simulated</b> on the server-side: Attempting to update a record having ODD-numbered id will generate this errror.
Responses from the update action will have successProperty === false along with a message. This error can be handled by
listening to the <b>"exception"</b> event upon your Store.</p>
<code><pre>
exception : function(proxy, type, action, options, res, arg) {
if (type === 'remote') {
Ext.Msg.show({
title: 'REMOTE EXCEPTION',
msg: res.message,
icon: Ext.MessageBox.ERROR
});
}
}
</pre></code>
<p><b>Note: This new "exception" event supercedes the old loadexception event which is now deprecated.</b></p>
<div class="container" style="width:500px">
<div id="user-form"></div>
<div id="user-grid"></div>
</div>
</body>
</html>
|
