Django 1.2+ template loader for Jinja2

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"""
See http://docs.djangoproject.com/en/dev/ref/templates/api/#using-an-alternative-template-language

Use:
 * {{ url_for('view_name') }} instead of {% url view_name %},
 * <input type="hidden" name="csrfmiddlewaretoken" value="{{ csrf_token }}">
   instead of {% csrf_token %}.

"""

from django.template.loader import BaseLoader
from django.template.loaders.app_directories import app_template_dirs
from django.template import TemplateDoesNotExist
from django.core import urlresolvers
from django.conf import settings
import jinja2

class Template(jinja2.Template):
    def render(self, context):
        # flatten the Django Context into a single dictionary.
        context_dict = {}
        for d in context.dicts:
            context_dict.update(d)
        return super(Template, self).render(context_dict)

class Loader(BaseLoader):
    is_usable = True
    
    env = jinja2.Environment(loader=jinja2.FileSystemLoader(app_template_dirs))
    env.template_class = Template

    # These are available to all templates.
    env.globals['url_for'] = urlresolvers.reverse
    env.globals['MEDIA_URL'] = settings.MEDIA_URL
    #env.globals['STATIC_URL'] = settings.STATIC_URL
    

    def load_template(self, template_name, template_dirs=None):
        try:
            template = self.env.get_template(template_name)
        except jinja2.TemplateNotFound:
            raise TemplateDoesNotExist(template_name)
        return template, template.filename

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Comments

spuriousdata (on August 19, 2010):

Your setup may be different than mine, but I think you want to add settings.TEMPLATE_DIRS to app_template_dirs on line 29. Otherwise it seems that it will only load templates from the django module directories but not from your app.

This is excellent, by the way. It was a huge help.

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