forked from jazzband/django-debug-toolbar
/
signals.py
73 lines (65 loc) · 2.63 KB
/
signals.py
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import sys
from django.conf import settings
from django.core.signals import request_started, request_finished, \
got_request_exception
from django.db.backends.signals import connection_created
from django.db.models.signals import class_prepared, pre_init, post_init, \
pre_save, post_save, pre_delete, post_delete, post_syncdb
from django.dispatch.dispatcher import WEAKREF_TYPES
from django.template.loader import render_to_string
from debug_toolbar.panels import DebugPanel
class SignalDebugPanel(DebugPanel):
name = "Signals"
has_content = True
SIGNALS = {
'request_started': request_started,
'request_finished': request_finished,
'got_request_exception': got_request_exception,
'connection_created': connection_created,
'class_prepared': class_prepared,
'pre_init': pre_init,
'post_init': post_init,
'pre_save': pre_save,
'post_save': post_save,
'pre_delete': pre_delete,
'post_delete': post_delete,
'post_syncdb': post_syncdb,
}
def title(self):
return "Signals"
def url(self):
return ''
def signals(self):
signals = self.SIGNALS.copy()
if hasattr(settings, 'DEBUG_TOOLBAR_CONFIG'):
extra_signals = settings.DEBUG_TOOLBAR_CONFIG.get('EXTRA_SIGNALS', [])
else:
extra_signals = []
for signal in extra_signals:
parts = signal.split('.')
path = '.'.join(parts[:-1])
__import__(path)
signals[parts[-1]] = getattr(sys.modules[path], parts[-1])
return signals
signals = property(signals)
def content(self):
signals = []
keys = self.signals.keys()
keys.sort()
for name in keys:
signal = self.signals[name]
receivers = []
for (receiverkey, r_senderkey), receiver in signal.receivers:
if isinstance(receiver, WEAKREF_TYPES):
receiver = receiver()
if receiver is None:
continue
if getattr(receiver, 'im_self', None) is not None:
text = "method %s on %s object" % (receiver.__name__, receiver.im_self.__class__.__name__)
elif getattr(receiver, 'im_class', None) is not None:
text = "method %s on %s" % (receiver.__name__, receiver.im_class.__name__)
else:
text = "function %s" % receiver.__name__
receivers.append(text)
signals.append((name, signal, receivers))
return render_to_string('debug_toolbar/panels/signals.html', {'signals': signals})