Ticket #25954: arrayfield_set_model_on_nested_arrayfields.diff

django/contrib/postgres/fields/array.py

@@ -31 +31 @@
 
     def contribute_to_class(self, cls, name, **kwargs):
         super(ArrayField, self).contribute_to_class(cls, name, **kwargs)
+        self._set_base_field_model(cls)
+
+    def _set_base_field_model(self, cls):
         self.base_field.model = cls
+        if isinstance(self.base_field, ArrayField):
+            self.base_field._set_base_field_model(cls)
 
     def check(self, **kwargs):
         errors = super(ArrayField, self).check(**kwargs)