I'm trying to populate an admin form with the field names of of a model
class, but I don't want to have to instantiate that model just to read it's
fields from _meta.

I basically want to do something like this:

self.fields['sort_by'].choices = [(field.verbose_name, field.name) for field
in field_list]

field_list would be the equivalent to model_instance._meta.fields, but
without requiring the model instance.

I know I could just grab an instance of the model from the database, but I'd
like this to work even if there are no instances currently saved.

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