Commit fa9a2674 authored by Andrew Godwin's avatar Andrew Godwin
Browse files

Ignore through being None on some special cases of fields.

parent 4529af9e

django/db/migrations/autodetector.py

+1 −1
Original line number Diff line number Diff line
@@ -156,7 +156,7 @@ class MigrationAutodetector(object): 
            old_model_state = self.from_state.models[app_label, old_model_name]

            for field_name, field in old_model_state.fields:

                old_field = self.old_apps.get_model(app_label, old_model_name)._meta.get_field_by_name(field_name)[0]

                if hasattr(old_field, "rel") and hasattr(old_field.rel, "through") and not old_field.rel.through._meta.auto_created:

                if hasattr(old_field, "rel") and getattr(old_field.rel, "through", None) and not old_field.rel.through._meta.auto_created:

                    through_key = (

                        old_field.rel.through._meta.app_label,

                        old_field.rel.through._meta.object_name.lower(),