Fixed #27488 -- Added SpatiaLite suppport for IsValid, MakeValid, and __isvalid.

django/contrib/gis/db/backends/spatialite/operations.py

@@ -56,9 +56,11 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
     select = 'AsText(%s)'
 
     gis_operators = {
+        # Unary predicates
+        'isvalid': SpatialOperator(func='IsValid'),
+        # Binary predicates
         'equals': SpatialOperator(func='Equals'),
         'disjoint': SpatialOperator(func='Disjoint'),
-        'dwithin': SpatialOperator(func='PtDistWithin'),
         'touches': SpatialOperator(func='Touches'),
         'crosses': SpatialOperator(func='Crosses'),
         'within': SpatialOperator(func='Within'),
@@ -75,7 +77,8 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
         # These are implemented here as synonyms for Equals
         'same_as': SpatialOperator(func='Equals'),
         'exact': SpatialOperator(func='Equals'),
-
+        # Distance predicates
+        'dwithin': SpatialOperator(func='PtDistWithin'),
         'distance_gt': SpatialOperator(func='Distance', op='>'),
         'distance_gte': SpatialOperator(func='Distance', op='>='),
         'distance_lt': SpatialOperator(func='Distance', op='<'),
@@ -96,9 +99,9 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
 
     @cached_property
     def unsupported_functions(self):
-        unsupported = {'BoundingCircle', 'ForceRHR', 'IsValid', 'MakeValid', 'MemSize'}
+        unsupported = {'BoundingCircle', 'ForceRHR', 'MemSize'}
         if not self.lwgeom_version():
-            unsupported.add('GeoHash')
+            unsupported |= {'GeoHash', 'IsValid', 'MakeValid'}
         return unsupported
 
     @cached_property

docs/ref/contrib/gis/db-api.txt

@@ -347,7 +347,7 @@ Lookup Type                        PostGIS    Oracle    MySQL [#]_   SpatiaLite
 :lookup:`equals`                   X          X         X            X          C
 :lookup:`exact`                    X          X         X            X          B
 :lookup:`intersects`               X          X         X            X          B
-:lookup:`isvalid`                  X
+:lookup:`isvalid`                  X                                 X (LWGEOM)
 :lookup:`overlaps`                 X          X         X            X          B
 :lookup:`relate`                   X          X                      X          C
 :lookup:`same_as`                  X          X         X            X          B
@@ -390,9 +390,9 @@ Function                              PostGIS  Oracle  MySQL        SpatiaLite
 :class:`ForceRHR`                     X
 :class:`GeoHash`                      X                             X (LWGEOM)
 :class:`Intersection`                 X        X       X (≥ 5.6.1)  X
-:class:`IsValid`                      X
+:class:`IsValid`                      X                             X (LWGEOM)
 :class:`Length`                       X        X       X            X
-:class:`MakeValid`                    X
+:class:`MakeValid`                    X                             X (LWGEOM)
 :class:`MemSize`                      X
 :class:`NumGeometries`                X        X       X            X
 :class:`NumPoints`                    X        X       X            X

docs/ref/contrib/gis/functions.txt

@@ -298,11 +298,15 @@ intersection between them.
 
 .. versionadded:: 1.10
 
-*Availability*: PostGIS
+*Availability*: PostGIS, SpatiaLite (LWGEOM)
 
 Accepts a geographic field or expression and tests if the value is well formed.
 Returns ``True`` if its value is a valid geometry and ``False`` otherwise.
 
+.. versionchanged:: 1.11
+
+    SpatiaLite support was added.
+
 ``Length``
 ==========
 
@@ -327,13 +331,17 @@ resource-intensive) with the ``spheroid`` keyword argument.
 
 .. versionadded:: 1.10
 
-*Availability*: PostGIS
+*Availability*: PostGIS, SpatiaLite (LWGEOM)
 
 Accepts a geographic field or expression and attempts to convert the value into
 a valid geometry without losing any of the input vertices. Geometries that are
 already valid are returned without changes. Simple polygons might become a
 multipolygon and the result might be of lower dimension than the input.
 
+.. versionchanged:: 1.11
+
+    SpatiaLite support was added.
+
 ``MemSize``
 ===========
 

docs/releases/1.11.txt

@@ -151,6 +151,11 @@ Minor features
 * Added the ability to pass the `size`, `shape`, and `offset` parameter when
   creating :class:`~django.contrib.gis.gdal.GDALRaster` objects.
 
+* Added SpatiaLite support for the
+  :class:`~django.contrib.gis.db.models.functions.IsValid` function,
+  :class:`~django.contrib.gis.db.models.functions.MakeValid` function, and
+  :lookup:`isvalid` lookup.
+
 :mod:`django.contrib.messages`
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~