I have tried to use the juggernaut framework for flask in order to send real-time information to the client browser followinf the flask snippet at http://flask.pocoo.org/snippets/80/.
When I try to implement it for my code, it still does not provide a real-time output in the client browser.
This is my python code:
import flask
from flask.views import MethodView
from tweetStreamsRT import StreamerRt
from juggernaut import Juggernaut
app = flask.Flask(__name__)
app.secret_key = "xxxxx"
PORT = 8080
class View(MethodView):
def get(self):
return flask.render_template('index.html')
def post(self):
results = StreamerRt().filter(track=[flask.request.form['event']])
jug = Juggernaut()
jug.publish('channel', results)
return self.get()
app.add_url_rule('/', view_func = View.as_view('index'), methods=['GET', 'POST'])
app.debug = True
if __name__ == "__main__":
print 'Listening on http://localhost:%s' % PORT
app.run()
My html page is, which inherits from a base html page:
{% extends "base.html" %}
{% import "forms.html" as forms %}
{% block page_header %}
<div class="page-header">
<h1>Welcome</h1>
</div>
{% endblock %}
{% block content %}
<h2>Enter the Event you would like to follow</h2>
<form action="/" method="post">
<input type="text" name="event" />
<input type="submit" value="Submit Query" />
</form>
Results:
<pre>
<script type="text/javascript" charset="utf-8">
var jug = new Juggernaut;
jug.subscribe("channel", function(data){
alert("Got data: " + data);});
</script>
</pre>
{% endblock %}
I'm confused as to why nothing is sent to the client browser.
Thanks
As another answer states, Juggernaut has now been deprecated. I would suggest using another PUB/SUB framework like Faye.
Juggernout is deprecated http://blog.alexmaccaw.com/killing-a-library If you're about to build your application around it it's the right time to switch to something else. Like EventSource http://www.html5rocks.com/en/tutorials/eventsource/basics/