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move_topic_to_stream: Delete UserMessage for new stream unsubs.

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For users who are unsubscribed from the new stream but are in
the old stream, we delete the UserMessage.

We send the delete_message event only to guest users,
who have completely lost asses to the moved messages, for other
users we send the normal update_message event which moves
the messages to the new unsubed stream which
otherwise would look broken to the
user without reloading to the webpage.
This commit is contained in:
Aman Agrawal
2020-06-29 20:10:51 +05:30
committed by Tim Abbott
parent 8a54dc43ce
commit 3f42d15168
2 changed files with 24 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
zerver/lib/actions.py
View File

@@ -4556,14 +4556,20 @@ def do_update_message(user_profile: UserProfile, message: Message,
new_stream_sub_ids = [user.user_profile_id for user in subs_to_new_stream]
# Get guest users who aren't subscribed to the new_stream.
guest_subs_losing_access = [
# Get users who aren't subscribed to the new_stream.
subs_losing_usermessages = [
sub for sub in subscribers
if sub.user_profile_id not in new_stream_sub_ids
]
# Users who can longer access the message without some action
# from admins.
# TODO: Extend for case when new stream is private.
subs_losing_access = [
sub for sub in subs_losing_usermessages
if sub.user_profile.is_guest
and sub.user_profile_id not in new_stream_sub_ids
]
ums = ums.exclude(user_profile_id__in=[
sub.user_profile_id for sub in guest_subs_losing_access])
sub.user_profile_id for sub in subs_losing_usermessages])
if topic_name is not None:
topic_name = truncate_topic(topic_name)
@@ -4590,12 +4596,12 @@ def do_update_message(user_profile: UserProfile, message: Message,
assert stream_being_edited is not None
message_ids = [msg.id for msg in changed_messages]
# Delete UserMessage objects from guest users who will no
# Delete UserMessage objects for users who will no
# longer have access to these messages. Note: This could be
# very expensive, since it's N guest users x M messages.
UserMessage.objects.filter(
user_profile_id__in=[sub.user_profile_id for sub in
guest_subs_losing_access],
subs_losing_usermessages],
message_id__in=message_ids,
).delete()
@@ -4606,7 +4612,7 @@ def do_update_message(user_profile: UserProfile, message: Message,
'stream_id': stream_being_edited.id,
'topic': orig_topic_name,
}
delete_event_notify_user_ids = [sub.user_profile_id for sub in guest_subs_losing_access]
delete_event_notify_user_ids = [sub.user_profile_id for sub in subs_losing_access]
send_event(user_profile.realm, delete_event, delete_event_notify_user_ids)
if message.edit_history is not None:
@@ -4655,9 +4661,8 @@ def do_update_message(user_profile: UserProfile, message: Message,
subscribers = subscribers.exclude(user_profile_id__in=[um.user_profile_id for um in ums])
if new_stream is not None:
assert guest_subs_losing_access is not None
# Exclude guest users who are not subscribed to the new stream from receing this event.
subscribers = subscribers.exclude(user_profile_id__in=[sub.user_profile_id for sub in guest_subs_losing_access])
assert subs_losing_access is not None
subscribers = subscribers.exclude(user_profile_id__in=[sub.user_profile_id for sub in subs_losing_access])
# All users that are subscribed to the stream must be notified when a message is edited
subscribers_ids = [user.user_profile_id for user in subscribers]

9
zerver/tests/test_messages.py
View File

@@ -3572,11 +3572,15 @@ class EditMessageTest(ZulipTestCase):
"iago", "test move stream", "new stream", "test")
guest_user = self.example_user('polonius')
non_guest_user = self.example_user('hamlet')
self.subscribe(guest_user, old_stream.name)
self.subscribe(non_guest_user, old_stream.name)
msg_id_to_test_acesss = self.send_stream_message(user_profile, old_stream.name,
topic_name='test', content="fourth")
self.assertEqual(has_message_access(guest_user, Message.objects.get(id=msg_id_to_test_acesss), None), True)
self.assertEqual(has_message_access(non_guest_user, Message.objects.get(id=msg_id_to_test_acesss), None), True)
result = self.client_patch("/json/messages/" + str(msg_id), {
'message_id': msg_id,
@@ -3587,6 +3591,11 @@ class EditMessageTest(ZulipTestCase):
self.assert_json_success(result)
self.assertEqual(has_message_access(guest_user, Message.objects.get(id=msg_id_to_test_acesss), None), False)
self.assertEqual(has_message_access(non_guest_user, Message.objects.get(id=msg_id_to_test_acesss), None), True)
self.assertEqual(UserMessage.objects.filter(
user_profile_id=non_guest_user.id,
message_id=msg_id_to_test_acesss,
).count(), 0)
self.assertEqual(has_message_access(self.example_user('iago'), Message.objects.get(id=msg_id_to_test_acesss), None), True)
def test_no_notify_move_message_to_stream(self) -> None: