#19212: app_cache_ready signal
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Reporter: cdestigter | Owner: nobody
Type: New feature | Status: new
Component: Database layer (models, ORM) | Version: 1.5-alpha-1
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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[https://groups.google.com/d/topic/django-users/OziphrWlcYo/discussion
This thread] on django-users proposed the concept of a signal for when all
apps are loaded. We've also come across a use case that requires this.
Basically class_prepared is fired during loading of the app cache. So
during handling of class_prepared, ForeignKey.rel.to may not yet be
resolved, and that limits what we can do.
So we wrote a 3-line patch which adds a signal that gets fired when the
app cache finishes loading.
Because this can't be done outside of core without monkey-patching, I'd
say it belongs in core.
Here's another request for this on SO:
http://stackoverflow.com/questions/1333019/django-audittrail-lazy-
relations
Our 3 line patch:
[https://github.com/koordinates/django/commit/cfa687409698ab9c5ffd150d0c89aba7d361739f]
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Ticket URL: <https://code.djangoproject.com/ticket/19212>
Django <https://code.djangoproject.com/>
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