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POCalling a back end URL using javascript channel API
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  1. POCalling a back end URL using javascript channel API
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    copied!<p>Handler Implementation</p> <pre><code>class TestHandler(RequestHandler, Jinja2Mixin): def get(self): channel_id = str(random.randint(1, 10000)) + str(datetime.now()) chat_token = channel.create_channel(channel_id) context = {'channel_id': channel_id, 'chat_token': chat_token} return self.render_response('test.html', **context) def post(self): channel_id = str(random.randint(1, 10000)) + str(datetime.now()) chat_token = channel.create_channel(channel_id) context = {'channel_id': channel_id, 'chat_token': chat_token} return self.render_response('test.html', **context) </code></pre> <p>HTML Implementation</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script type="text/javascript" language="javascript" src="/static/js/jquery-1.6.1.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" language="javascript" src="/static/js/backend.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form method="post" id="testform" name="testform"&gt; &lt;br&gt;&lt;label name="channel_id" id="channel_id"&gt;{{channel_id}}&lt;/label&gt; &lt;br&gt;&lt;label name="chat_token" id="channel_id"&gt;{{chat_token}}&lt;/label&gt; &lt;input type="submit" id="btnsubmit" class="btnsubmit" name="btnsubmit" value="submit" /&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>jQuery implementation</p> <pre><code> $(document).ready(function () { var token =$('#channel_id').val() alert(token) var channel = new goog.appengine.Channel(token); var socket = channel.open(); socket.onopen = onOpened; onOpened = function() { connected = true; var xhr = new XMLHttpRequest(); xhr.open('POST','/dashboard/', true); xhr.send(); }; socket.onmessage = onMessage; socket.onerror = onError; socket.onclose = onClose; }); </code></pre> <p>I want to call a Back end handler. I do not know how to do it. This is what i have done . Can anyone give a help ?</p>
 

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