CODEWITHSUNDEEP
templatestornado
idiotype
idiotype

Reputation: 211

inherited python vars in nested tornado templates

I am trying to nest tornado templates using {% include %}:

<html>
    {% for headline in HL['headlines'] %} 
        {% include 'hl_1.html' %}
    {% end %}
    </ul>
  </body>
</html>

The template above works, and the sub-template above works. What I cannot figure out how to do is pass in the name of the sub-template (e.g.replacing 'hl_1.html' with a string parameter in the parent template's namespace). AFter reviewing the template.py source code it seems that {% include accepts a string and nothing else. But it would be fantastic if one could dynamically specify sub-templates.

Has anyone tried this and succeeded?

thanks

Upvotes: 1

Views: 1656

Answers (1)

lbolla
lbolla

Reputation: 5411

The way this is achieved usually is by using UI modules.

This is how I would structure your app.

First main.py:

import tornado.ioloop                                           
import tornado.web 
import views

class MainHandler(tornado.web.RequestHandler):                  
    def get(self):                                              
        HL = {                                                  
                'headlines': ['head1', 'head2', 'head3'],
                }
        self.render('tmpl.html', HL=HL)

if __name__ == "__main__":
    application = tornado.web.Application([
        (r"/", MainHandler),
    ], ui_modules=views)
    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()

Then your template tmpl.html:

<html>
    {% for headline in HL['headlines'] %} 
        {% module Headline(headline) %}
    {% end %}
    </ul>
  </body>
</html>

Finally, views.py, where you can define all your UI modules:

from tornado.web import UIModule

class Headline(UIModule):
    def render(self, name):
        return '<h1>%s</h1>' % name

UI modules are like "reusable templates", that accept parameters.

Upvotes: 2

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