mirror of
https://github.com/django/django.git
synced 2024-12-24 18:16:19 +00:00
585b7acaa3
This is the first part of Alex Gaynor's GSoC project to add Multi-db support to Django. git-svn-id: http://code.djangoproject.com/svn/django/trunk@11710 bcc190cf-cafb-0310-a4f2-bffc1f526a37
90 lines
2.7 KiB
Python
90 lines
2.7 KiB
Python
"""
|
|
Testing signals before/after saving and deleting.
|
|
"""
|
|
|
|
from django.db import models
|
|
|
|
class Author(models.Model):
|
|
name = models.CharField(max_length=20)
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
class Book(models.Model):
|
|
name = models.CharField(max_length=20)
|
|
authors = models.ManyToManyField(Author)
|
|
|
|
def __unicode__(self):
|
|
return self.name
|
|
|
|
def pre_save_test(signal, sender, instance, **kwargs):
|
|
print 'pre_save signal,', instance
|
|
if kwargs.get('raw'):
|
|
print 'Is raw'
|
|
|
|
def post_save_test(signal, sender, instance, **kwargs):
|
|
print 'post_save signal,', instance
|
|
if 'created' in kwargs:
|
|
if kwargs['created']:
|
|
print 'Is created'
|
|
else:
|
|
print 'Is updated'
|
|
if kwargs.get('raw'):
|
|
print 'Is raw'
|
|
|
|
def pre_delete_test(signal, sender, instance, **kwargs):
|
|
print 'pre_delete signal,', instance
|
|
print 'instance.id is not None: %s' % (instance.id != None)
|
|
|
|
def post_delete_test(signal, sender, instance, **kwargs):
|
|
print 'post_delete signal,', instance
|
|
print 'instance.id is not None: %s' % (instance.id != None)
|
|
|
|
__test__ = {'API_TESTS':"""
|
|
|
|
# Save up the number of connected signals so that we can check at the end
|
|
# that all the signals we register get properly unregistered (#9989)
|
|
>>> pre_signals = (len(models.signals.pre_save.receivers),
|
|
... len(models.signals.post_save.receivers),
|
|
... len(models.signals.pre_delete.receivers),
|
|
... len(models.signals.post_delete.receivers))
|
|
|
|
>>> models.signals.pre_save.connect(pre_save_test)
|
|
>>> models.signals.post_save.connect(post_save_test)
|
|
>>> models.signals.pre_delete.connect(pre_delete_test)
|
|
>>> models.signals.post_delete.connect(post_delete_test)
|
|
|
|
>>> a1 = Author(name='Neal Stephenson')
|
|
>>> a1.save()
|
|
pre_save signal, Neal Stephenson
|
|
post_save signal, Neal Stephenson
|
|
Is created
|
|
|
|
>>> b1 = Book(name='Snow Crash')
|
|
>>> b1.save()
|
|
pre_save signal, Snow Crash
|
|
post_save signal, Snow Crash
|
|
Is created
|
|
|
|
# Assigning to m2m shouldn't generate an m2m signal
|
|
>>> b1.authors = [a1]
|
|
|
|
# Removing an author from an m2m shouldn't generate an m2m signal
|
|
>>> b1.authors = []
|
|
|
|
>>> models.signals.post_delete.disconnect(post_delete_test)
|
|
>>> models.signals.pre_delete.disconnect(pre_delete_test)
|
|
>>> models.signals.post_save.disconnect(post_save_test)
|
|
>>> models.signals.pre_save.disconnect(pre_save_test)
|
|
|
|
# Check that all our signals got disconnected properly.
|
|
>>> post_signals = (len(models.signals.pre_save.receivers),
|
|
... len(models.signals.post_save.receivers),
|
|
... len(models.signals.pre_delete.receivers),
|
|
... len(models.signals.post_delete.receivers))
|
|
|
|
>>> pre_signals == post_signals
|
|
True
|
|
|
|
"""}
|