Merge pull request qgis#168 from snorfalorpagus/updateFields

Layer fields should be updated after changes in the data provider.
yjacolin · Nov 24, 2013 · 68a0677 · 68a0677
2 parents 2a7806b + 912a3e3
commit 68a0677
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/source/docs/pyqgis_developer_cookbook/vector.rst b/source/docs/pyqgis_developer_cookbook/vector.rst
@@ -175,6 +175,11 @@ For deletion of fields just provide a list of field indexes.
   if caps & QgsVectorDataProvider.DeleteAttributes:
     res = layer.dataProvider().deleteAttributes( [ 0 ] )
 
+After adding or removing fields in the data provider the layer's fields need
+to be updated because the changes are not automatically propagated.
+::
+
+  layer.updateFields()
 
 .. _editing-buffer: