Add handling of null value in value map to search widget

qgis · Jul 11, 2016 · 6b904e7 · 6b904e7
1 parent 63f9f71
commit 6b904e7
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/gui/editorwidgets/qgsvaluemapsearchwidgetwrapper.cpp b/src/gui/editorwidgets/qgsvaluemapsearchwidgetwrapper.cpp
@@ -15,6 +15,7 @@
 
 #include "qgsvaluemapsearchwidgetwrapper.h"
 #include "qgstexteditconfigdlg.h"
+#include "qgsvaluemapconfigdlg.h"
 
 #include "qgsfield.h"
 #include "qgsfieldvalidator.h"
@@ -95,6 +96,12 @@ QString QgsValueMapSearchWidgetWrapper::createExpression( QgsSearchWidgetWrapper
 
   QString currentKey = mComboBox->itemData( mComboBox->currentIndex() ).toString();
 
+  if ( currentKey == QString( VALUEMAP_NULL_TEXT ) )
+    if ( flags & EqualTo )
+      return fieldName + " IS NULL";
+  if ( flags & NotEqualTo )
+    return fieldName + " IS NOT NULL";
+
   switch ( fldType )
   {
     case QVariant::Int: