Invalid filter: __pyjade_iter (Django)

[gummz]

I'm probably doing something wrong here but:

for story in stories
    #{story.title}

where stories=Stories.objects.all(), (exactly one entry is in the database) returns:

TRACEBACK:

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/stories/

Django Version: 1.8.3
Python Version: 2.7.0
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'account',
 'disqus',
 'crispy_forms',
 'crispy_forms_foundation',
 'index',
 'comments',
 'user_profile',
 'story')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware',
 'account.middleware.LocaleMiddleware',
 'account.middleware.TimezoneMiddleware')


Template error:
In template D:\development\PyCharm\Projects\fcon\story\templates\story_list.html, error at line 3
   Invalid filter: '__pyjade_iter'

   1 : {% extends "base.html" %}{% block title %}



   2 : <title>Story List</title>{% endblock %}{% block content %}



   3 : <ul> {% for story in stories|__pyjade_iter:1 %} 



   4 :   <li>{{story.title|escape}}</li>{% endfor %}



   5 : </ul>{% endblock %}

Traceback:
File "C:\Python27\lib\site-packages\django\core\handlers\base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "D:/development/PyCharm/Projects/fcon\story\views.py" in story_list
  13.                   dict(stories=Story.objects.all()),
File "C:\Python27\lib\site-packages\django\shortcuts.py" in render
  67.             template_name, context, request=request, using=using)
File "C:\Python27\lib\site-packages\django\template\loader.py" in render_to_string
  98.             template = get_template(template_name, using=using)
File "C:\Python27\lib\site-packages\django\template\loader.py" in get_template
  35.                 return engine.get_template(template_name, dirs)
File "C:\Python27\lib\site-packages\django\template\backends\django.py" in get_template
  30.         return Template(self.engine.get_template(template_name, dirs))
File "C:\Python27\lib\site-packages\django\template\engine.py" in get_template
  167.         template, origin = self.find_template(template_name, dirs)
File "C:\Python27\lib\site-packages\django\template\engine.py" in find_template
  141.                 source, display_name = loader(name, dirs)
File "C:\Python27\lib\site-packages\django\template\loaders\base.py" in __call__
  13.         return self.load_template(template_name, template_dirs)
File "C:\Python27\lib\site-packages\django\template\loaders\base.py" in load_template
  23.             template = Template(source, origin, template_name, self.engine)
File "C:\Python27\lib\site-packages\django\template\base.py" in __init__
  190.         self.nodelist = engine.compile_string(template_string, origin)
File "C:\Python27\lib\site-packages\django\template\engine.py" in compile_string
  261.         return parser.parse()
File "C:\Python27\lib\site-packages\django\template\base.py" in parse
  341.                     compiled_result = compile_func(self, token)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in do_extends
  210.     nodelist = parser.parse()
File "C:\Python27\lib\site-packages\django\template\base.py" in parse
  341.                     compiled_result = compile_func(self, token)
File "C:\Python27\lib\site-packages\django\template\loader_tags.py" in do_block
  184.     nodelist = parser.parse(('endblock',))
File "C:\Python27\lib\site-packages\django\template\base.py" in parse
  341.                     compiled_result = compile_func(self, token)
File "C:\Python27\lib\site-packages\django\template\defaulttags.py" in do_for
  871.     sequence = parser.compile_filter(bits[in_index + 1])
File "C:\Python27\lib\site-packages\django\template\base.py" in compile_filter
  423.         return FilterExpression(token, self)
File "C:\Python27\lib\site-packages\django\template\base.py" in __init__
  633.                 filter_func = parser.find_filter(filter_name)
File "C:\Python27\lib\site-packages\django\template\base.py" in find_filter
  429.             raise TemplateSyntaxError("Invalid filter: '%s'" % filter_name)

Exception Type: TemplateSyntaxError at /stories/
Exception Value: Invalid filter: '__pyjade_iter'

[blx]

Hmm, I'm not tooo sure what's going on, but just to double check:

Do you have PyJade set up as a template backend in your settings.py? (as in this link)

The __pyjade_iter filter gets defined by pyjade in the django extension, so perhaps it's not getting setup somehow?

Edit: it looks like you're loading a django-style template (.html) already - did you pre-render all of your jade templates? If so then you might have to copy the code from pyjade.runtime.iteration() and add it as a django filter.

[gummz]

That was indeed the problem, thank you very much!

I had the pyjade backend in TEMPLATE_LOADERS instead of 'loaders.' I also had to set app_dirs to false.

Have a nice day!

[blx]

Great!

I opened a pull request to update the readme instructions for Django 1.8.