newforms-admin: inline fields with multiple fk's between models doesn't work

[jdetaeye]

In case a single foreign key relation exists between the inline model and its parent, all is fine.
When there are multiple keys between the models, the InlineModelAdmin class provides the field fk_name in which we can define which one to use.

The required lookup when the fk_name is specified has not been coded yet: forgotten or skipped-for-now.
The attached patch provides the implementation.

[jdetaeye]

implementation patch

[jdetaeye]

The real changes in the patch are in lines 326-333 only.
Changes in other lines are trailing spaces removed by my source editor...

[Nicola Larosa]

Do you really mean this does not need tests? :-) I'd like to supply them, otherwise (if I manage to discover what's the new syntax for inline fields).

Oh, and would you please add your email to the ticket? It would be nice to be able to contact you directly. Thanks.

[jdetaeye]

if I manage to discover what's the new syntax for inline fields

I share your frustration.
Here's what I figured out:

class Child_Inline(admin.TabularInline):
  model = Child
  extra = 3

class Parent_admin(admin.ModelAdmin):
  inlines = [Child_Inline]

[jkocherhans]

Marked #5358 as a duplicate.

[jkocherhans]

(In [6301]) newforms-admin: Fixed #5488. inlines with multiple ForeignKeys to the same parent don't work. Thanks jdetaeye. Also, some whitespace cleanup. Sorry for the mess.