django.core.exceptions.FieldError: Related Field got invalid lookup: id

[Giuseppe De Marco]

If in a model is used another primary_key label, different from the classical id name, it should be better use %s__pk__exact instead of %s__id__exact.

I made this change in my fork but I also cleaned the demo-app and the most of dependencies in requirements, so I cannot do a pull request. Just this, in

dal_admin_filters/__init__.py

    def queryset(self, request, queryset):
        if self.value():
            lookup = "%s__id__exact" % self.parameter_name
            return queryset.filter(**{lookup: self.value()})
        else:
            return queryset

became:

    def queryset(self, request, queryset):
        if self.value():
            lookup = "%s__pk__exact" % self.parameter_name
            return queryset.filter(**{lookup: self.value()})
        else:
            return queryset