Removed 'depth' .select_related() argument as per deprecation TL.

django/db/models/query.py

@@ -5,7 +5,6 @@ The main QuerySet implementation. This provides the public API for the ORM.
 import copy
 import itertools
 import sys
-import warnings
 
 from django.conf import settings
 from django.core import exceptions
@@ -648,10 +647,6 @@ class QuerySet(object):
 
         If select_related(None) is called, the list is cleared.
         """
-        if 'depth' in kwargs:
-            warnings.warn('The "depth" keyword argument has been deprecated.\n'
-                    'Use related field names instead.', DeprecationWarning, stacklevel=2)
-        depth = kwargs.pop('depth', 0)
         if kwargs:
             raise TypeError('Unexpected keyword arguments to select_related: %s'
                     % (list(kwargs),))
@@ -659,13 +654,9 @@ class QuerySet(object):
         if fields == (None,):
             obj.query.select_related = False
         elif fields:
-            if depth:
-                raise TypeError('Cannot pass both "depth" and fields to select_related()')
             obj.query.add_select_related(fields)
         else:
             obj.query.select_related = True
-        if depth:
-            obj.query.max_depth = depth
         return obj
 
     def prefetch_related(self, *lookups):

docs/ref/models/querysets.txt

@@ -764,8 +764,6 @@ You can refer to any :class:`~django.db.models.ForeignKey` or
 :class:`~django.db.models.OneToOneField` relation in the list of fields
 passed to ``select_related()``. This includes foreign keys that have
 ``null=True`` (which are omitted in a no-parameter ``select_related()`` call).
-It's an error to use both a list of fields and the ``depth`` parameter in the
-same ``select_related()`` call; they are conflicting options.
 
 You can also refer to the reverse direction of a
 :class:`~django.db.models.OneToOneField` in the list of fields passed to
@@ -781,20 +779,6 @@ If you need to clear the list of related fields added by past calls of
 
    >>> without_relations = queryset.select_related(None)
 
-.. deprecated:: 1.5
-    The ``depth`` parameter to ``select_related()`` has been deprecated. You
-    should replace it with the use of the ``(*fields)`` listing specific
-    related fields instead as documented above.
-
-A depth limit of relationships to follow can also be specified::
-
-    b = Book.objects.select_related(depth=1).get(id=4)
-    p = b.author         # Doesn't hit the database.
-    c = p.hometown       # Requires a database call.
-
-A :class:`~django.db.models.OneToOneField` is not traversed in the reverse
-direction if you are performing a depth-based ``select_related()`` call.
-
 prefetch_related
 ~~~~~~~~~~~~~~~~
 

tests/select_related/tests.py

@@ -1,7 +1,5 @@
 from __future__ import absolute_import, unicode_literals
 
-import warnings
-
 from django.test import TestCase
 
 from .models import Domain, Kingdom, Phylum, Klass, Order, Family, Genus, Species
@@ -55,9 +53,7 @@ class SelectRelatedTests(TestCase):
         extra queries
         """
         with self.assertNumQueries(1):
-            with warnings.catch_warnings():
+            person = Species.objects.select_related('genus__family__order__klass__phylum__kingdom__domain').get(name="sapiens")
-                warnings.simplefilter("ignore", DeprecationWarning)
-                person = Species.objects.select_related(depth=10).get(name="sapiens")
             domain = person.genus.family.order.klass.phylum.kingdom.domain
             self.assertEqual(domain.name, 'Eukaryota')
 
@@ -91,53 +87,27 @@ class SelectRelatedTests(TestCase):
                 'Hominidae',
             ])
 
-    def test_depth(self, depth=1, expected=7):
-        """
-        The "depth" argument to select_related() will stop the descent at a
-        particular level.
-        """
-        # Notice: one fewer queries than above because of depth=1
-        with self.assertNumQueries(expected):
-            with warnings.catch_warnings():
-                warnings.simplefilter("ignore", DeprecationWarning)
-                pea = Species.objects.select_related(depth=depth).get(name="sativum")
-            self.assertEqual(
-                pea.genus.family.order.klass.phylum.kingdom.domain.name,
-                'Eukaryota'
-            )
-
-    def test_larger_depth(self):
-        """
-        The "depth" argument to select_related() will stop the descent at a
-        particular level.  This tests a larger depth value.
-        """
-        self.test_depth(depth=5, expected=3)
-
     def test_list_with_depth(self):
         """
-        The "depth" argument to select_related() will stop the descent at a
+        Passing a relationship field lookup specifier to select_related() will
-        particular level. This can be used on lists as well.
+        stop the descent at a particular level. This can be used on lists as
+        well.
         """
         with self.assertNumQueries(5):
-            with warnings.catch_warnings():
+            world = Species.objects.all().select_related('genus__family')
-                warnings.simplefilter("ignore", DeprecationWarning)
-                world = Species.objects.all().select_related(depth=2)
             orders = [o.genus.family.order.name for o in world]
             self.assertEqual(sorted(orders),
                 ['Agaricales', 'Diptera', 'Fabales', 'Primates'])
 
     def test_select_related_with_extra(self):
-        with warnings.catch_warnings():
+        s = Species.objects.all().select_related()\
-            warnings.simplefilter("ignore", DeprecationWarning)
-            s = Species.objects.all().select_related(depth=1)\
             .extra(select={'a': 'select_related_species.id + 10'})[0]
         self.assertEqual(s.id + 10, s.a)
 
     def test_certain_fields(self):
         """
         The optional fields passed to select_related() control which related
-        models we pull in. This allows for smaller queries and can act as an
+        models we pull in. This allows for smaller queries.
-        alternative (or, in addition to) the depth parameter.
 
         In this case, we explicitly say to select the 'genus' and
         'genus.family' models, leading to the same number of queries as before.
@@ -166,8 +136,6 @@ class SelectRelatedTests(TestCase):
             self.assertEqual(s, 'Diptera')
 
     def test_depth_fields_fails(self):
-        with warnings.catch_warnings():
-            warnings.simplefilter("ignore", DeprecationWarning)
         self.assertRaises(TypeError,
             Species.objects.select_related,
             'genus__family__order', depth=4