test0908
/
django
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add comment to usage of m2m_reverse_field_name

This commit is contained in:
Andrew Godwin 2012-09-24 13:17:38 +01:00
parent 49dc1e7d28
commit 3a338d00ec
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
django/db/backends/schema.py
View File

@ -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],
)