Closes #4897: Allow filtering by content type identified as <app>.<model> string

netbox/utilities/filters.py

@@ -1,4 +1,5 @@
 import django_filters
+from django_filters.constants import EMPTY_VALUES
 from copy import deepcopy
 from dcim.forms import MACAddressField
 from django import forms
@@ -115,6 +116,26 @@ class NumericArrayFilter(django_filters.NumberFilter):
         return super().filter(qs, value)
 
 
+class ContentTypeFilter(django_filters.CharFilter):
+    """
+    Allow specifying a ContentType by <app_label>.<model> (e.g. "dcim.site").
+    """
+    def filter(self, qs, value):
+        if value in EMPTY_VALUES:
+            return qs
+
+        try:
+            app_label, model = value.lower().split('.')
+        except ValueError:
+            return qs.none()
+        return qs.filter(
+            **{
+                f'{self.field_name}__app_label': app_label,
+                f'{self.field_name}__model': model
+            }
+        )
+
+
 #
 # FilterSets
 #