Question

For my site need some “widgets” that elaborate output from various data models, because this widgets are visible in any page is possible with mako to retrieve the data without pass (and elaborate) every time with render() in controllers?

Answer 1

May be you need use helpers

in lib/helpers.py

def tweets(**params):
   context = {}
   return render('tweets.mako', context)

In you page template do this to render you tweets widget:

   h.tweets()