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"""
Debug Toolbar middleware
"""
import re
from django.conf import settings
from django.utils.safestring import mark_safe
from debug_toolbar.toolbar.loader import DebugToolbar
_HTML_TYPES = ('text/html', 'application/xhtml+xml')
_END_HEAD_RE = re.compile(r'</head>', re.IGNORECASE)
_END_BODY_RE = re.compile(r'</body>', re.IGNORECASE)
class DebugToolbarMiddleware(object):
"""
Middleware to set up Debug Toolbar on incoming request and render toolbar
on outgoing response.
"""
def __init__(self):
self.debug_toolbar = None
def process_request(self, request):
if settings.DEBUG:
self.debug_toolbar = DebugToolbar()
self.debug_toolbar.load_panels()
return None
def process_response(self, request, response):
if settings.DEBUG:
if response['Content-Type'].split(';')[0] in _HTML_TYPES:
#response.content = _END_HEAD_RE.sub(mark_safe(self.debug_toolbar.render_styles() + "%s" % match.group()), response.content)
response.content = _END_BODY_RE.sub(mark_safe(self.debug_toolbar.render_toolbar() + '</body>'), response.content)
return response
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