#897: Bi-Directional ManyToMany in Admin
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Reporter: anonymous | Owner: nobody
Type: New feature | Status: new
Milestone: | Component: contrib.admin
Version: | Severity: Normal
Resolution: | Keywords:
Triage Stage: Accepted | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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Changes (by croepha):
* ui_ux: => 0
Comment:
etienned's solution did not work for me, I am doing this instead:
{{{
class User(models.Model):
groups = models.ManyToManyField('Group',
db_table='testapp_user_groups')
class Group(models.Model):
users = models.ManyToManyField('User',
db_table=User.groups.field.db_table)
Group.users.through._meta.managed = False
}}}
This will also work for non symmetrical self M2M relationships:
{{{
class User(models.Model):
supervisors = models.ManyToManyField('self',
related_name='underlings_set', db_table='testapp_user_supervisors')
underlings = models.ManyToManyField('self',
related_name='supervisors_set', db_table=supervisors.db_table)
underlings._get_m2m_attr = supervisors._get_m2m_reverse_attr
underlings._get_m2m_reverse_attr = supervisors._get_m2m_attr
User.underlings.through._meta.managed = False
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/897#comment:27>
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