from __future__ import unicode_literals
from django.conf import settings
from django.utils.importlib import import_module
from debug_toolbar.toolbar.loader import load_panel_classes
from debug_toolbar.middleware import DebugToolbarMiddleware
loaded = False
def is_toolbar(cls):
return (issubclass(cls, DebugToolbarMiddleware) or
DebugToolbarMiddleware in getattr(cls, '__bases__', ()))
def iter_toolbar_middlewares():
global loaded
for middleware_path in settings.MIDDLEWARE_CLASSES:
try:
mod_path, cls_name = middleware_path.rsplit('.', 1)
mod = import_module(mod_path)
middleware_cls = getattr(mod, cls_name)
except (AttributeError, ImportError, ValueError):
continue
if is_toolbar(middleware_cls) and not loaded:
# we have a hit!
loaded = True
yield middleware_cls
for middleware_cls in iter_toolbar_middlewares():
load_panel_classes()
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