Commit 3a338d00 authored by Andrew Godwin's avatar Andrew Godwin
Browse files

Add comment to usage of m2m_reverse_field_name

parent 49dc1e7d

django/db/backends/schema.py

+2 −0
Original line number Diff line number Diff line
@@ -591,6 +591,8 @@ class BaseDatabaseSchemaEditor(object): 
        # Repoint the FK to the other side

        self.alter_field(

            new_field.rel.through,

            # We need the field that points to the target model, so we can tell alter_field to change it -

            # this is m2m_reverse_field_name() (as opposed to m2m_field_name, which points to our model)

            old_field.rel.through._meta.get_field_by_name(old_field.m2m_reverse_field_name())[0],

            new_field.rel.through._meta.get_field_by_name(new_field.m2m_reverse_field_name())[0],

        )