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from pprint import pformat
from django.conf import settings
from django.core.signals import request_started
from django.dispatch import Signal
from django.template.loader import render_to_string
from django.test.signals import template_rendered
from debug_toolbar.panels import DebugPanel
# Code taken and adapted from Simon Willison and Django Snippets:
# http://www.djangosnippets.org/snippets/766/
# Monkeypatch instrumented test renderer from django.test.utils - we could use
# django.test.utils.setup_test_environment for this but that would also set up
# e-mail interception, which we don't want
from django.test.utils import instrumented_test_render
from django.template import Template
if Template.render != instrumented_test_render:
Template.original_render = Template.render
Template.render = instrumented_test_render
# MONSTER monkey-patch
old_template_init = Template.__init__
def new_template_init(self, template_string, origin=None, name='<Unknown Template>'):
old_template_init(self, template_string, origin, name)
self.origin = origin
Template.__init__ = new_template_init
class TemplateDebugPanel(DebugPanel):
"""
A panel that lists all templates used during processing of a response.
"""
name = 'Template'
has_content = True
def __init__(self):
self.templates = []
template_rendered.connect(self._storeTemplateInfo)
def _storeTemplateInfo(self, sender, **kwargs):
self.templates.append(kwargs)
def title(self):
return 'Templates'
def url(self):
return ''
def content(self):
template_context = []
for i, d in enumerate(self.templates):
info = {}
# Clean up some info about templates
t = d.get('template', None)
# Skip templates that we are generating through the debug toolbar.
if t.name.startswith('debug_toolbar/'):
continue
if t.origin and t.origin.name:
t.origin_name = t.origin.name
else:
t.origin_name = 'No origin'
info['template'] = t
# Clean up context for better readability
c = d.get('context', None)
info['context'] = '\n'.join([pformat(_d) for _d in c.dicts])
template_context.append(info)
context = {
'templates': template_context,
'template_dirs': settings.TEMPLATE_DIRS,
}
return render_to_string('debug_toolbar/panels/templates.html', context)
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