Hi,
I had to change the following lines because tests failed:
class Friend1(object):
def __str__(self):
return "User {} is friends with {}".format(self.to_user, self.from_user)
class FriendshipRequest1(object):
def __str__(self):
return "Friendship request from user {} to
{}".format(self.from_user, self.to_user)
Friend.__str__ = Friend1.__str__
FriendshipRequest.__str__ = FriendshipRequest1.__str__
אורי
[email protected]
On Sat, Jul 27, 2019 at 9:26 AM אורי <[email protected]> wrote:
> Django users,
>
> I want to override def __str__ of models I'm using, but the models are
> maintained by other developers. I think the __str__ is only used by the
> admin interface. I found out that I can do something like this:
>
> from django.contrib import admin
> from django.contrib.sites.models import Site
> from django.contrib.auth.models import Group
>
> from friendship.models import Follow, Friend, FriendshipRequest, Block
>
>
> class ReadOnlyModelAdmin(admin.ModelAdmin):
> """
> ModelAdmin class that prevents modifications through the admin.
>
> The changelist and the detail view work, but a 403 is returned
> if one actually tries to edit an object.
> """
> actions = None
>
> # We cannot call super().get_fields(request, obj) because that method
> calls
> # get_readonly_fields(request, obj), causing infinite recursion. Ditto for
> # super().get_form(request, obj). So we assume the default ModelForm.
> def get_readonly_fields(self, request, obj=None):
> return self.fields or [f.name for f in self.model._meta.fields]
>
> def has_add_permission(self, request):
> return False
>
> # Allow viewing objects but not actually changing them.
> def has_change_permission(self, request, obj=None):
> return (request.method in ['GET', 'HEAD'] and
> super().has_change_permission(request, obj))
>
> def has_delete_permission(self, request, obj=None):
> return False
>
>
> admin.site.unregister(Site)
> admin.site.register(Site, ReadOnlyModelAdmin)
>
> admin.site.unregister(Group)
> # admin.site.register(Group, ReadOnlyModelAdmin)
>
> admin.site.unregister(Block)
> admin.site.unregister(Follow)
> admin.site.unregister(Friend)
> admin.site.unregister(FriendshipRequest)
> # admin.site.register(Block, ReadOnlyModelAdmin)
> # admin.site.register(Follow, ReadOnlyModelAdmin)
> admin.site.register(Friend, ReadOnlyModelAdmin)
> admin.site.register(FriendshipRequest, ReadOnlyModelAdmin)
>
>
> class Friend1(Friend):
> def __str__(self):
> return "User {} is friends with {}".format(self.to_user,
> self.from_user)
>
>
> class FriendshipRequest1(FriendshipRequest):
> def __str__(self):
> return "Friendship request from user {} to {}".format(self.from_user,
> self.to_user)
>
>
> Friend.__str__ = Friend1.__str__
> FriendshipRequest.__str__ = FriendshipRequest1.__str__
>
> But, is it possible override __str__ in a cleaner way? It seems to me not
> such a clean way to override a method (but it works). But I have to use the
> model itself, because there is a lot of code in the package I'm using that
> uses the model itself.
>
> (We are using our own Block model which I think we developed before they
> developed a similar model. We are not using their Follow model too).
>
> אורי
> [email protected]
>
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