-
-
Notifications
You must be signed in to change notification settings - Fork 3.1k
/
signals.py
287 lines (223 loc) · 10.3 KB
/
signals.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
# -*- coding: utf-8 -*-
from django.conf import settings
from django.core.exceptions import ObjectDoesNotExist
from django.db.models import signals
from django.dispatch import Signal
from cms.cache.permissions import (
clear_user_permission_cache, clear_permission_cache)
from cms.models import (Page, Title, CMSPlugin, PagePermission,
GlobalPagePermission, PageUser, PageUserGroup)
from menus.menu_pool import menu_pool
# fired after page location is changed - is moved from one node to other
page_moved = Signal(providing_args=["instance"])
# fired when some of nodes (Title) with applications gets saved
application_post_changed = Signal(providing_args=["instance"])
# fired after page gets published - copied to public model - there may be more
# than one instances published before this signal gets called
post_publish = Signal(providing_args=["instance"])
def update_plugin_positions(**kwargs):
plugin = kwargs['instance']
plugins = CMSPlugin.objects.filter(language=plugin.language, placeholder=plugin.placeholder).order_by("position")
last = 0
for p in plugins:
if p.position != last:
p.position = last
p.save()
last += 1
signals.post_delete.connect(update_plugin_positions, sender=CMSPlugin, dispatch_uid="cms.plugin.update_position")
def update_title_paths(instance, **kwargs):
"""Update child pages paths in case when page was moved.
"""
for title in instance.title_set.all():
title.save()
page_moved.connect(update_title_paths, sender=Page, dispatch_uid="cms.title.update_path")
def update_title(title):
parent_page_id = title.page.parent_id
slug = u'%s' % title.slug
if title.page.is_home():
title.path = ''
elif not title.has_url_overwrite:
title.path = u'%s' % slug
if parent_page_id:
parent_title = Title.objects.get_title(parent_page_id,
language=title.language, language_fallback=True)
if parent_title:
title.path = (u'%s/%s' % (parent_title.path, slug)).lstrip("/")
def pre_save_title(instance, raw, **kwargs):
"""Save old state to instance and setup path
"""
menu_pool.clear(instance.page.site_id)
instance.tmp_path = None
instance.tmp_application_urls = None
if instance.id:
try:
tmp_title = Title.objects.get(pk=instance.id)
instance.tmp_path = tmp_title.path
instance.tmp_application_urls = tmp_title.application_urls
except:
pass # no Titles exist for this page yet
# Build path from parent page's path and slug
if instance.has_url_overwrite and instance.path:
instance.path = instance.path.strip(" /")
else:
update_title(instance)
signals.pre_save.connect(pre_save_title, sender=Title, dispatch_uid="cms.title.presave")
def post_save_title(instance, raw, created, **kwargs):
# Update descendants only if path changed
application_changed = False
if instance.path != getattr(instance,'tmp_path',None) and not hasattr(instance, 'tmp_prevent_descendant_update'):
descendant_titles = Title.objects.filter(
page__lft__gt=instance.page.lft,
page__rght__lt=instance.page.rght,
page__tree_id__exact=instance.page.tree_id,
language=instance.language,
has_url_overwrite=False,
).order_by('page__tree_id', 'page__parent', 'page__lft')
for descendant_title in descendant_titles:
descendant_title.path = '' # just reset path
descendant_title.tmp_prevent_descendant_update = True
if descendant_title.application_urls:
application_changed = True
descendant_title.save()
if not hasattr(instance, 'tmp_prevent_descendant_update') and \
(instance.application_urls != getattr(instance, 'tmp_application_urls', None) or application_changed):
# fire it if we have some application linked to this page or some descendant
application_post_changed.send(sender=Title, instance=instance)
# remove temporary attributes
if getattr( instance, 'tmp_path', None):
del(instance.tmp_path)
if getattr( instance, 'tmp_application_urls' , None):
del(instance.tmp_application_urls)
try:
del(instance.tmp_prevent_descendant_update)
except AttributeError:
pass
signals.post_save.connect(post_save_title, sender=Title, dispatch_uid="cms.title.postsave")
def post_save_user(instance, raw, created, **kwargs):
"""Signal called when new user is created, required only when CMS_PERMISSION.
Asignes creator of the user to PageUserInfo model, so we now who had created
this user account.
requires: CurrentUserMiddleware
"""
from cms.utils.permissions import get_current_user
# read current user from thread locals
creator = get_current_user()
if not creator or not created or not hasattr(creator, 'pk'):
return
from django.db import connection
# i'm not sure if there is a workaround for this, somebody any ideas? What
# we are doing here is creating PageUser on Top of existing user, i'll do it
# through plain SQL, its not nice, but...
# TODO: find a better way than an raw sql !!
cursor = connection.cursor()
query = "INSERT INTO %s (user_ptr_id, created_by_id) VALUES (%d, %d)" % (
PageUser._meta.db_table,
instance.pk,
creator.pk
)
cursor.execute(query)
cursor.close()
def post_save_user_group(instance, raw, created, **kwargs):
"""The same like post_save_user, but for Group, required only when
CMS_PERMISSION.
Asignes creator of the group to PageUserGroupInfo model, so we now who had
created this user account.
requires: CurrentUserMiddleware
"""
from cms.utils.permissions import get_current_user
# read current user from thread locals
creator = get_current_user()
if not creator or not created or creator.is_anonymous():
return
from django.db import connection
# TODO: same as in post_save_user - raw sql is just not nice - workaround...?
cursor = connection.cursor()
query = "INSERT INTO %s (group_ptr_id, created_by_id) VALUES (%d, %d)" % (
PageUserGroup._meta.db_table,
instance.pk,
creator.pk
)
cursor.execute(query)
cursor.close()
if settings.CMS_PERMISSION:
# only if permissions are in use
from django.contrib.auth.models import User, Group
# regster signals to user related models
signals.post_save.connect(post_save_user, User)
signals.post_save.connect(post_save_user_group, Group)
def pre_save_page(instance, raw, **kwargs):
"""Helper pre save signal, assigns old_page attribute, so we can still
compare changes. Currently used only if CMS_PUBLISHER
"""
instance.old_page = None
try:
instance.old_page = Page.objects.get(pk=instance.pk)
except ObjectDoesNotExist:
pass
def post_save_page_moderator(instance, raw, created, **kwargs):
"""Helper post save signal, cleans old_page attribute.
"""
old_page = instance.old_page
del(instance.old_page)
if settings.CMS_MODERATOR:
# tell moderator something was happen with this page
from cms.utils.moderator import page_changed
page_changed(instance, old_page)
def post_save_page(instance, **kwargs):
for page in instance.get_descendants():
for title in page.title_set.all():
update_title(title)
title.save()
def update_placeholders(instance, **kwargs):
instance.rescan_placeholders()
def invalidate_menu_cache(instance, **kwargs):
menu_pool.clear(instance.site_id)
if settings.CMS_MODERATOR:
# tell moderator, there is something happening with this page
signals.pre_save.connect(pre_save_page, sender=Page, dispatch_uid="cms.page.presave")
signals.post_save.connect(post_save_page_moderator, sender=Page, dispatch_uid="cms.page.postsave")
signals.post_save.connect(post_save_page, sender=Page)
signals.post_save.connect(update_placeholders, sender=Page)
signals.pre_save.connect(invalidate_menu_cache, sender=Page)
signals.pre_delete.connect(invalidate_menu_cache, sender=Page)
def pre_save_user(instance, raw, **kwargs):
clear_user_permission_cache(instance)
def pre_delete_user(instance, **kwargs):
clear_user_permission_cache(instance)
def pre_save_group(instance, raw, **kwargs):
if instance.pk:
for user in instance.user_set.all():
clear_user_permission_cache(user)
def pre_delete_group(instance, **kwargs):
for user in instance.user_set.all():
clear_user_permission_cache(user)
def pre_save_pagepermission(instance, raw, **kwargs):
if instance.user:
clear_user_permission_cache(instance.user)
def pre_delete_pagepermission(instance, **kwargs):
if instance.user:
clear_user_permission_cache(instance.user)
def pre_save_globalpagepermission(instance, raw, **kwargs):
if instance.user:
clear_user_permission_cache(instance.user)
menu_pool.clear(all=True)
def pre_delete_globalpagepermission(instance, **kwargs):
if instance.user:
clear_user_permission_cache(instance.user)
def pre_save_delete_page(instance, **kwargs):
clear_permission_cache()
if settings.CMS_PERMISSION:
signals.pre_save.connect(pre_save_user, sender=User)
signals.pre_delete.connect(pre_delete_user, sender=User)
signals.pre_save.connect(pre_save_user, sender=PageUser)
signals.pre_delete.connect(pre_delete_user, sender=PageUser)
signals.pre_save.connect(pre_save_group, sender=Group)
signals.pre_delete.connect(pre_delete_group, sender=Group)
signals.pre_save.connect(pre_save_group, sender=PageUserGroup)
signals.pre_delete.connect(pre_delete_group, sender=PageUserGroup)
signals.pre_save.connect(pre_save_pagepermission, sender=PagePermission)
signals.pre_delete.connect(pre_delete_pagepermission, sender=PagePermission)
signals.pre_save.connect(pre_save_globalpagepermission, sender=GlobalPagePermission)
signals.pre_delete.connect(pre_delete_globalpagepermission, sender=GlobalPagePermission)
signals.pre_save.connect(pre_save_delete_page, sender=Page)
signals.pre_delete.connect(pre_save_delete_page, sender=Page)