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POUnderstanding django admin readonly_fields
 

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    <p>I created some code to differentiate between two usergroups in Django admin, resulting in showing all fields readonly or only some of them, which are set directly in the ModelAdmin class.</p> <p>At first here is the code:</p> <pre><code>class PersonAdmin(admin.ModelAdmin): readonly_fields = ('created_at','created_by',) def get_form(self, request, obj=None, **kwargs): if obj: # we are in edit mode if request.user.is_superuser: self.readonly_fields = () else: for group in request.user.groups.all(): if str(group) == 'readonlyuser': allfields = tuple(obj._meta.get_all_field_names()) self.readonly_fields = allfields return super(PersonAdmin, self).get_form(request, obj, **kwargs) </code></pre> <p>I divide between the groups and set the fields accordingly. Everything works fine if users from the two groups are not logged in at the same time! <strong>After a 'readonly' user logged in, the adminuser will get all fields readonly too.</strong></p> <p>My inspections provided a solution also: If I put an additional if statement for the adminuser within the <em>for</em> block everything works as expected.</p> <pre><code>if str(group) == 'adminuser': self.readonly_fields = PersonAdmin.readonly_fields </code></pre> <p>Why is that and what's happening there?</p> <p>I have no special cache settings made and it happens on the dev server as well as on an Apache with WSGI.</p> <p>From my understanding request.user.groups.all() should return all groups the <em>currently logged in</em> user belongs to. Where does Django get the allfields (readonly) from, if another user on a different IP and session match this if block?</p>
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