#15602: Using get_readonly_fields and StackedInline/TabularInline admin objects
doesn't allow creating new objects, immutible existing objects
---------------------------------+------------------------------------
Reporter: bradwhittington | Owner: nobody
Type: Bug | Status: new
Component: contrib.admin | Version: master
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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Comment (by Carlton Gibson):
Given the change it would involve, I think this will probably need to be
resolved as a documentation issue.
That they're passed the parent object means that `get_readonly_fields()`
&co as they appear on an inline have the same signature but a different
semantics from when they appear on the normal ModelAdmin. As such, they
should be documented separately in the
[https://docs.djangoproject.com/en/2.1/ref/contrib/admin
/#inlinemodeladmin-objects InlineModelAdmin ref].
Similar differences are already documented for
[https://docs.djangoproject.com/en/2.1/ref/contrib/admin/#django.contrib.admin.InlineModelAdmin.has_add_permission
the various InlineModelAdmin versions of the `has_<value>_permission()`
methods].
On the actual issue, could it be resolved with permissions? If you have
`add` but not `change` on the inline model (possibly via custom
`has_add_permission()` and `has_change_permission()` methods) do you not
get the `allow creating new objects, immutible existing objects` from the
title?
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Ticket URL: <https://code.djangoproject.com/ticket/15602#comment:21>
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