Fixed #25499 -- Added the ability to pass an expression in distance lookups

Thanks Bibhas Debnath for the report and Tim Graham for the review.

2 files changed, 11 insertions, 4 deletions

diff --git a/docs/ref/contrib/gis/geoquerysets.txt b/docs/ref/contrib/gis/geoquerysets.txt
index 9a42bd7a15..8b554ece06 100644
--- a/docs/ref/contrib/gis/geoquerysets.txt
+++ b/docs/ref/contrib/gis/geoquerysets.txt
@@ -515,14 +515,20 @@ Distance lookups take the following form::
 
 The value passed into a distance lookup is a tuple; the first two
 values are mandatory, and are the geometry to calculate distances to,
-and a distance value (either a number in units of the field or a
-:class:`~django.contrib.gis.measure.Distance` object).  On every
-distance lookup but :lookup:`dwithin`, an optional
+and a distance value (either a number in units of the field, a
+:class:`~django.contrib.gis.measure.Distance` object, or a `query expression
+<ref/models/expressions>`).
+
+With PostGIS, on every distance lookup but :lookup:`dwithin`, an optional
 third element, ``'spheroid'``, may be included to tell GeoDjango
 to use the more accurate spheroid distance calculation functions on
 fields with a geodetic coordinate system (e.g., ``ST_Distance_Spheroid``
 would be used instead of ``ST_Distance_Sphere``).
 
+.. versionadded:: 1.10
+
+    The ability to pass an expression as the distance value was added.
+
 .. fieldlookup:: distance_gt
 
 distance_gt
diff --git a/docs/releases/1.10.txt b/docs/releases/1.10.txt
index bb911bb8a0..c9978ac345 100644
--- a/docs/releases/1.10.txt
+++ b/docs/releases/1.10.txt
@@ -59,7 +59,8 @@ Minor features
 :mod:`django.contrib.gis`
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-* ...
+* :ref:`Distance lookups <distance-lookups>` now accept expressions as the
+  distance value parameter.
 
 :mod:`django.contrib.messages`
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^