Duplicate emails without fully qualified project imports

[tom_simpson]

When sending emails via signals.

Emails become duplicated if you are not using fully qualified imports for your project.

{from app.models import ....} causes duplicate emails being sent.

However,

{from project.app.models import ....} seems to resolve the issue

Thanks,
Tom

[tom_simpson]

It seems that all signals are being called twice by the models, not just the email sending function.

Thanks,
Tom

[Russell Keith-Magee]

from project.app.models import foo and from app.models import foo are two separate imports, resulting in two separate modules. As a result, if you have a signal registered in foo.py it causes two separate signals to be registered.

This is a language feature of Python; it isn't something that Django is in a position to fix.

That said, some of the discussions around the logging improvements under consideration for Django 1.3 may result in a better way to register signals, which will avoid this problem by providing a way to register signals that isn't prone to accidental duplication as a result of import paths.