Remove NaturalOrderingManager

netbox/utilities/managers.py

@@ -1,45 +0,0 @@
-from django.db.models import Manager
-from django.db.models.expressions import RawSQL
-
-NAT1 = r"CAST(SUBSTRING({}.{} FROM '^(\d{{1,9}})') AS integer)"
-NAT2 = r"SUBSTRING({}.{} FROM '^\d*(.*?)\d*$')"
-NAT3 = r"CAST(SUBSTRING({}.{} FROM '(\d{{1,9}})$') AS integer)"
-
-
-class NaturalOrderingManager(Manager):
-    """
-    Order objects naturally by a designated field (defaults to 'name'). Leading and/or trailing digits of values within
-    this field will be cast as independent integers and sorted accordingly. For example, "Foo2" will be ordered before
-    "Foo10", even though the digit 1 is normally ordered before the digit 2.
-    """
-    natural_order_field = 'name'
-
-    def get_queryset(self):
-
-        queryset = super().get_queryset()
-
-        db_table = self.model._meta.db_table
-        db_field = self.natural_order_field
-
-        # Append the three subfields derived from the designated natural ordering field
-        queryset = (
-            queryset.annotate(_nat1=RawSQL(NAT1.format(db_table, db_field), ()))
-            .annotate(_nat2=RawSQL(NAT2.format(db_table, db_field), ()))
-            .annotate(_nat3=RawSQL(NAT3.format(db_table, db_field), ()))
-        )
-
-        # Replace any instance of the designated natural ordering field with its three subfields
-        ordering = []
-        for field in self.model._meta.ordering:
-            if field == self.natural_order_field:
-                ordering.append('_nat1')
-                ordering.append('_nat2')
-                ordering.append('_nat3')
-            else:
-                ordering.append(field)
-
-        # Default to using the _nat indexes if Meta.ordering is empty
-        if not ordering:
-            ordering = ('_nat1', '_nat2', '_nat3')
-
-        return queryset.order_by(*ordering)