Stop errors on older Spatialite versions that miss some tables

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

@@ -1,3 +1,4 @@
+from django.db.utils import DatabaseError
 from django.db.backends.sqlite3.schema import DatabaseSchemaEditor
 
 
@@ -78,12 +79,15 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
                 self.remove_geometry_metadata(model, field)
         # Make sure all geom stuff is gone
         for geom_table in self.geometry_tables:
+            try:
                 self.execute(
                     self.sql_discard_geometry_columns % {
                         "geom_table": geom_table,
                         "table": self.quote_name(model._meta.db_table),
                     }
                 )
+            except DatabaseError:
+                pass
         super(SpatialiteSchemaEditor, self).delete_model(model, **kwargs)
 
     def add_field(self, model, field):
@@ -112,6 +116,7 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
         super(SpatialiteSchemaEditor, self).alter_db_table(model, old_db_table, new_db_table)
         # Repoint any straggler names
         for geom_table in self.geometry_tables:
+            try:
                 self.execute(
                     self.sql_update_geometry_columns % {
                         "geom_table": geom_table,
@@ -119,6 +124,8 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
                         "new_table": self.quote_name(new_db_table),
                     }
                 )
+            except DatabaseError:
+                pass
         # Re-add geometry-ness and rename spatial index tables
         for field in model._meta.local_fields:
             if isinstance(field, GeometryField):