Opened 3 weeks ago
Closed 3 weeks ago
#35878 closed Uncategorized (duplicate)
Allow to add M2M also in related-model form in admin site
Reported by: | David | Owned by: | |
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Component: | contrib.admin | Version: | |
Severity: | Normal | Keywords: | |
Cc: | Triage Stage: | Unreviewed | |
Has patch: | no | Needs documentation: | no |
Needs tests: | no | Patch needs improvement: | no |
Easy pickings: | no | UI/UX: | no |
Description
Given the following definition of models:
from django.db import models class ModelA(models.Model): name = models.CharField(max_length=10) class ModelB(models.Model): name = models.CharField(max_length=10) others = models.ManyToManyField(ModelA)
The admin site allows to add the field ModelB.others
to that model's admin, but there is no easy way to add the same relation on ModelA
admin with the same functionality .
It is possible to add the field by providing a custom form in which the related-field is defined manually, however the form field widget will not be wrapped in RelatedFieldWidgetWrapper
thus the "add new entry" button will not be present. This can be forced in the ModelAdmin.form
by turning the form
attribute into a property which builds the form class providing the right parameters to the reverse-field.
It would be a great enhancement to allow for an easier way to add reverse-m2m to a model-admin or to write down a guide to obtain such result.
Change History (2)
comment:1 by , 3 weeks ago
comment:2 by , 3 weeks ago
Resolution: | → duplicate |
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Status: | new → closed |
I believe this is a duplicate of #897
To make it work my "workaround" is
This way the admin displays the "+" button which points to ModelB form in ModelA admin. Not trivial and quite fragile (some APIs are not documented).