Add support for autocomplete_fields that span foreign key relationships

[chrisrodz]

Currently this list filter fails to account for fields that span across foreignkey relationships, it will correctly parse the field as a ForeignKey but will attempt to find it on the Model that belongs to the current ModelAdmin, instead of traversing across models.

I can add a more concrete example if necessary.

[vigo]

Hmm... I'll investigate that. Thanks for the heads up!

[vigo]

hi again, i guess i need more details :)

[iMakedonsky]

Say we have such model structure:
InvoiceItem => Invoice => User

Would be great to allow InvoiceItemAdmin with autocomplete working for nested relations, e.g.
by specifying autocomplete_list_filter = ['invoice__user']

[vigo]

I'll work on it!

[georgekpg]

At present it does not work with such two level structure. I also came across this problem.
The error message will be 'InvoiceItem has no field user'

[PSzczepanski1996]

Any update on this?

[firvida]

Not working yet

[Kabirov7]

Any update on this?

[vigo]

this project is deprecated, enjoy -> https://github.com/vigo/django-admin-list-filter