Decorating a single function with multiple listeners does not work

[aktarmiah]

Tested in version 1.1.1

I have the following setup:

# channels.py
@dataclass
class MyChannel(TriggerChannel):
    model = MyTable
    lock_notifications = False

# listeners.py
@post_insert_listener(channels.MyChannel)
@post_save_listener(channels.MyChannel)
@post_delete_listener(channels.MyChannel)
class MyHandlerClass():
    def __init__(self, old, new) -> None:
        print("Triggered!!")

After a deleting a single record from MyTable my console shows

Triggered!!
Triggered!!
Triggered!!

I was expecting a single trigger (the delete trigger) but it seems like all the listeners are being triggered.
All migrations are up to date.

[PaulGilmartin]

Hmm, I actually don't think I've ever tried adding two listeners to a single function before. Thanks for raising, i'll have a look at it

[PaulGilmartin]

Had a quick look at it. I tried adding a second listener to one of the functions in pgpubsub/tests/listeners.py

@pgpubsub.post_save_listener(PostTriggerChannel)    # new     
@pgpubsub.post_delete_listener(PostTriggerChannel)
def email_author(old: Post, new: Post):
    author = Author.objects.get(pk=old.author_id)
    print(f'Emailing {author.name} to inform then post '
          f'{old.pk} has been edited or deleted.')
    email(author)

I can recreate the same issue you mentioned. In fact it looks like the top decorator, post_save_listener, is not registered at all either (adding it didn't even generate a migration to add the new trigger). Right now I'm not sure exactly why that would happen. Unfortunately I don't have any more time to look at this tonight. I will prioritise this for the next release, but not sure exactly when that will be yet. Please feel very free to submit a fix if you can think of one.