Patch for jinja2 loader to enable debug_toolbar support (original implementation made by Dmitri Kharlamov)

gistfile2.txt

jinja2.diff

diff -r 315812aa3f61 apps/utils/jinja.py
--- a/apps/utils/jinja.py	Thu Oct 28 19:38:28 2010 +0300
+++ b/apps/utils/jinja.py	Mon Nov 01 14:51:36 2010 +0200
@@ -1,6 +1,6 @@
 from coffin.template import Template as JTemplate
 from django.template import TemplateDoesNotExist
-                        
+from django.conf import settings
 
 try:
     from django.template.loaders import app_directories, filesystem
@@ -12,7 +12,7 @@
         passed template seems to be jinja one and raising exception otherwise"""
         if 'jinja_template' in origin:
             # TODO: integration with debug_toolbar
-            return JTemplate(source)
+            return JTemplate(source, origin)
         else:
             # This will cause django to try next loader in list
             raise TemplateDoesNotExist('Not a jinja template')
@@ -35,5 +35,36 @@
             source, origin = self.load_template_source(template_name, template_dirs)
         
             return _render_or_die(source, origin), origin
+            
+    if settings.DEBUG:
+        from django.test.signals import template_rendered
+        
+        class NewOrigin(object):
+            def __init__(self, origin):
+                self.name = origin
+        
+        def render_new(self, context):
+            """
+            An instrumented Template render method, providing a signal
+            that can be intercepted by the test system Client
+            """
+            template_rendered.send(sender=self, template=self, context=context)
+            return self.original_render(context)
+
+        if JTemplate.render != render_new:
+            JTemplate.original_render = JTemplate.render
+            JTemplate.render = render_new
+
+        @staticmethod
+        def new_template_new(cls, template_string, origin=None, name='<Unknown Template>'):
+            obj = cls.old_template_new(cls, template_string, origin, name)
+            obj.origin = NewOrigin(origin)
+            obj.name = origin
+            return obj
+
+        if JTemplate.__new__ != new_template_new:
+            JTemplate.old_template_new = JTemplate.__dict__['__new__']
+            JTemplate.__new__ = new_template_new
+
 except ImportError:
     pass
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