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from __future__ import absolute_import, unicode_literals
from django.conf import settings
from django.conf.urls import include, patterns, url
from django.core.urlresolvers import clear_url_caches, reverse, NoReverseMatch
from django.utils.importlib import import_module
import debug_toolbar
from debug_toolbar import settings as dt_settings
from debug_toolbar.middleware import DebugToolbarMiddleware
def is_toolbar_middleware(middleware_path):
# Replace this with import_by_path in Django >= 1.6.
try:
mod_path, cls_name = middleware_path.rsplit('.', 1)
mod = import_module(mod_path)
middleware_cls = getattr(mod, cls_name)
except (AttributeError, ImportError, ValueError):
return
return issubclass(middleware_cls, DebugToolbarMiddleware)
def is_toolbar_middleware_installed():
return any(is_toolbar_middleware(middleware)
for middleware in settings.MIDDLEWARE_CLASSES)
def prepend_to_setting(setting_name, value):
"""Insert value at the beginning of a list or tuple setting."""
values = getattr(settings, setting_name)
# Make a list [value] or tuple (value,)
value = type(values)((value,))
setattr(settings, setting_name, value + values)
def patch_internal_ips():
if not settings.INTERNAL_IPS:
prepend_to_setting('INTERNAL_IPS', '127.0.0.1')
prepend_to_setting('INTERNAL_IPS', '::1')
def patch_middleware_classes():
if not is_toolbar_middleware_installed():
prepend_to_setting('MIDDLEWARE_CLASSES',
'debug_toolbar.middleware.DebugToolbarMiddleware')
def patch_root_urlconf():
try:
reverse('djdt:render_panel')
except NoReverseMatch:
urlconf_module = import_module(settings.ROOT_URLCONF)
urlconf_module.urlpatterns += patterns('', # noqa
url(r'^__debug__/', include(debug_toolbar.urls)),
)
clear_url_caches()
if dt_settings.PATCH_SETTINGS:
patch_internal_ips()
patch_middleware_classes()
patch_root_urlconf()
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