I'm trying to write a custom jinja2 extension with Pyramid.
The extension code is:
from jinja2 import nodes
from jinja2.ext import Extension
class SnippetExtension(Extension):
tags = set(['snippet'])
def __init__(self, environment):
print "Init"
super(SnippetExtension, self).__init__(environment)
def parse(self, parser):
print "Parse"
stream = parser.stream
tag = stream.next()
print "Writing"
return nodes.Output('<div>Test</div>').set_lineno(tag.lineno)
I load the extension in __init__.py like this:
def main(global_config, **settings):
""" This function returns a Pyramid WSGI application.
"""
engine = engine_from_config(settings, 'sqlalchemy.')
DBSession.configure(bind=engine)
Base.metadata.bind = engine
config = Configurator(settings=settings)
config.include('pyramid_jinja2')
config.include('pyramid_fanstatic')
config.add_jinja2_renderer('.html')
config.add_static_view('static', 'static', cache_max_age=3600)
config.add_route('home', '/')
add_jinja2_extension(config,SnippetExtension) #<--- load the extension
config.scan()
return config.make_wsgi_app()
However I get the error:
TemplateSyntaxError: Encountered unknown tag 'snippet'
When parting the template:
{% snippet %}
What else do I need to do or what am I doing wrong?
