Admin autocomplete requires change permission

[Rodrigo Pinheiro Marques de Araújo]

class ModelA(models.Model):
     pass

class ModelB(Models.Model):
     a = models.ForeignKey(ModelA)

In django's admin a form can list all related objects without permission need. In the example above, Model B's form if using a ModelChoiceField is possible to lista all A objects. But using a autocomplete field requires change permission to find "A" objects. This different behavior force admin's user to give a different level of permission to your users. To fix this in the AutocompleteView the only permission required should be a logged user and staff member.

​https://github.com/django/django/blob/ff61a250815d32ff185501a5afef0245fec7d878/django/contrib/admin/views/autocomplete.py#L52