[1.10.x] Fixed #26750 -- Fixed introspection for geography point field with dim=3

Thanks Yegor Kazantsev for the report and the initial patch.
Backport of 140c23502 from master.

django/contrib/gis/gdal/geomtype.py

@@ -18,6 +18,7 @@ class OGRGeomType(object):
               7: 'GeometryCollection',
               100: 'None',
               101: 'LinearRing',
+              102: 'PointZ',
               1 + wkb25bit: 'Point25D',
               2 + wkb25bit: 'LineString25D',
               3 + wkb25bit: 'Polygon25D',
@@ -84,6 +85,8 @@ class OGRGeomType(object):
             return None
         elif s == 'Unknown':
             s = 'Geometry'
+        elif s == 'PointZ':
+            s = 'Point'
         return s + 'Field'
 
     def to_multi(self):

tests/gis_tests/inspectapp/models.py

@@ -19,6 +19,7 @@ class AllOGRFields(models.Model):
 
 class Fields3D(models.Model):
     point = models.PointField(dim=3)
+    pointg = models.PointField(dim=3, geography=True)
     line = models.LineStringField(dim=3)
     poly = models.PolygonField(dim=3)
 

tests/gis_tests/inspectapp/tests.py

@@ -12,6 +12,7 @@ from django.test.utils import modify_settings
 from django.utils.six import StringIO
 
 from ..test_data import TEST_DATA
+from ..utils import postgis
 
 if HAS_GDAL:
     from django.contrib.gis.gdal import Driver, GDALException, GDAL_VERSION
@@ -52,10 +53,14 @@ class InspectDbTests(TestCase):
         output = out.getvalue()
         if connection.features.supports_geometry_field_introspection:
             self.assertIn('point = models.PointField(dim=3)', output)
+            if postgis:
+                # Geography type is specific to PostGIS
+                self.assertIn('pointg = models.PointField(geography=True, dim=3)', output)
             self.assertIn('line = models.LineStringField(dim=3)', output)
             self.assertIn('poly = models.PolygonField(dim=3)', output)
         else:
             self.assertIn('point = models.GeometryField(', output)
+            self.assertIn('pointg = models.GeometryField(', output)
             self.assertIn('line = models.GeometryField(', output)
             self.assertIn('poly = models.GeometryField(', output)