Add Extra Jinja Filters

This is an example how to add custom Jinja filters to Sphinx’s HTML builder.


def add_jinja_filters(app):
    app.builder.templates.environment.filters['cleanurl'] = name_from_title

def setup(app):
    Adds extra jinja filters.
    app.connect("builder-inited", add_jinja_filters)

Now {{ "This is a title"|cleanurl }} will be replaced with this_is_a_title.

This could be an alternative to: catlinks = sorted([(c, name_from_title(c)) for c in env.filing["categories"]]). We could just use {{ category|cleanurl }} instead of {{ catlinks[category]) }} (