Question

By default, jinja2 autoescapes everything, and I want to stop this. I’m using the following code in a BaseHandler class:

@webapp2.cached_property
def jinja2(self):
    # Returns a Jinja2 renderer cached in the app registry.
    return jinja2.get_jinja2(app=self.app)

According to the docs, get_jinja2() has a callable “factory” argument which defaults to Jinja2(). I presume I need change this to Jinja2(config={‘autoescape’:False}), but how do you specify arguments for the factory?

Answer 1

You should call get_jinja2 with factory set to a callable constructing the jinja instance with your customer parameters:

@webapp2.cached_property
def jinja2(self):
    # Returns a Jinja2 renderer cached in the app registry, with no autoescaping.
    return jinja2.get_jinja2(lambda app: jinja2.Jinja2(app=app,config={'environment_args':{'autoescape':False}}))