dojox.rpc¶
| Status: | Contributed, Draft |
|---|---|
| Version: | 1.0 |
The DojoX RPC Project is an enhanced version of dojo.rpc, and will replace it in 2.0. RPC, or remote procedure call, is a system for communicating with a backend using a variety of flexible transports, all wrapped around a single class called a Service
Demonstration¶
This is an example of the Google API using the pre-defined google.smd in the SMD Library. Unless you are Google, the transport will be x-domain by way of io.script, so be sure to include that as well. (RPC can be used locally as well, using built in XHR transports)
<div id="loader"></div>
<div id="json-rpc-container">
<h2><a href="http://google.com"><img class="logo" src="http://www.google.com/logos/Logo_40wht.gif" alt="Google" /></a> Ajax API SMD</h2>
<input id="test" name="test" type="text" size="30" value="The Dojo Toolkit"/><br>
<select id="searchType">
<option value="webSearch">web</option>
<option value="localSearch">local</option>
<option value="videoSearch">videos</option>
<option value="blogSearch">blog</option>
<option value="newsSearch">news</option>
<option value="bookSearch">books</option>
<option value="imageSearch">images</option>
</select>
<button id="doit" type="submit" value="search">Search</button>
<div id="current">
<h3>Results:</h3>
<ul id="top-results"></ul>
</div>
<div id="past">
<h3>Old Searches:</h3>
<ul id="archive"></ul>
</div>
</div>
<script type="text/javascript">
dojo.require("dojox.rpc.Service");
dojo.require("dojo.io.script");
var google, tehLoader = null;
dojo.addOnLoad(function(){
// define the service:
google = new dojox.rpc.Service(dojo.moduleUrl("dojox.rpc","SMDLibrary/google.smd"));
// quick/easy loading indicator:
tehLoader = dojo.hitch(dojo,"style","loader","visibility");
dojo.query("#doit").onclick(function(e){
tehLoader("visible");
// move old results into the 'archive'
dojo.query("li","top-results").forEach(function(item){
dojo.byId("archive").appendChild(item);
});
// run the search
var searchType = dojo.byId("searchType").value || "webSearch";
google[searchType]({ q: dojo.byId("test").value })
.addCallback(function(returned){
// create an <li> for each data part:
dojo.forEach(returned.responseData.results,function(item){
var li = dojo.doc.createElement('li');
li.innerHTML = "<a target='_new' hr"+"ef='"+
(item.unescapedUrl || item.url) +"'>" + item.title +
"</a><br />" + "<span class='summary'>" +
(item.content || item.streetAddress || "unknown") +
"</span>"
;
dojo.byId("top-results").appendChild(li);
});
tehLoader("hidden");
})
.addErrback(function(err){
console.warn('ooops', err);
tehLoader("hidden");
});
});
});
</script>