Django - 需要 get_FOO_display 用于表单中的外部字段

Question

I've got a form template, to which I'm passing the form info as well as the object itself. I can use {{ object.get_FOO_display }} no problem for choice fields when the choice field is a part of the object itself, but I'm looking for an easy way to do the same for the foreign fields that are in the form.

I'm building this into a class-based view, so ideally any suggestions could be coded independent of references to specific fields.

Thanks!

Answer 1

If I'm not mistaken and you are trying to get display value for a django model instance with a choices attribute, you could simply:

object.foreign_key_field.get_FOO_display

However, if you are working backwards (ie trying to get display value for a model instance that has a foreign key pointing to your object instances model and a related_name attribute of fk_related_name) then:

object.fk_related_name.get_query_set()[i].get_FOO_display

get_query_set returns a queryset, so you could either iterate over the queryset with a {% forloop %} or provide the index [i] of the object you want, as above.

If these don't work and you're still uncertain, post you object instance model and foreign_key model.