Fixed #30341 -- Added support for the furlong unit in Distance.

django/contrib/gis/measure.py

@@ -233,6 +233,7 @@ class Distance(MeasureBase):
         'clarke_link': 0.201166195164,
         'fathom': 1.8288,
         'ft': 0.3048,
+        'furlong': 201.168,
         'german_m': 1.0000135965,
         'gold_coast_ft': 0.304799710181508,
         'indian_yd': 0.914398530744,
@@ -280,6 +281,7 @@ class Distance(MeasureBase):
         'Chain (Benoit)': 'chain_benoit',
         'Chain (Sears)': 'chain_sears',
         'Foot (International)': 'ft',
+        'Furrow Long': 'furlong',
         'German legal metre': 'german_m',
         'Gold Coast foot': 'gold_coast_ft',
         'Indian yard': 'indian_yd',

docs/ref/contrib/gis/measure.txt

@@ -93,6 +93,7 @@ Unit Attribute                     Full name or alias(es)
 ``clarke_link``                    Clarke's link
 ``fathom``                         Fathom
 ``rod``                            Rod
+``furlong``                        Furlong, Furrow Long
 ``nm``                             Nautical Mile
 ``nm_uk``                          Nautical Mile (UK)
 ``german_m``                       German legal metre

docs/releases/3.0.txt

@@ -75,6 +75,9 @@ Minor features
 * Added the :class:`~django.contrib.gis.db.models.functions.GeometryDistance`
   function, supported on PostGIS.
 
+* Added support for the ``furlong`` unit in
+  :class:`~django.contrib.gis.measure.Distance`.
+
 :mod:`django.contrib.messages`
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

tests/gis_tests/test_measure.py

@@ -138,10 +138,15 @@ class DistanceTest(unittest.TestCase):
         self.assertEqual(repr(d1), 'Distance(m=100.0)')
         self.assertEqual(repr(d2), 'Distance(km=3.5)')
 
+    def test_furlong(self):
+        d = D(m=201.168)
+        self.assertEqual(d.furlong, 1)
+
     def test_unit_att_name(self):
         "Testing the `unit_attname` class method"
         unit_tuple = [('Yard', 'yd'), ('Nautical Mile', 'nm'), ('German legal metre', 'german_m'),
-                      ('Indian yard', 'indian_yd'), ('Chain (Sears)', 'chain_sears'), ('Chain', 'chain')]
+                      ('Indian yard', 'indian_yd'), ('Chain (Sears)', 'chain_sears'), ('Chain', 'chain'),
+                      ('Furrow Long', 'furlong')]
         for nm, att in unit_tuple:
             with self.subTest(nm=nm):
                 self.assertEqual(att, D.unit_attname(nm))