[expressions] Fix misleading error string when fields are set but no …

…feature is available
qgis · Jul 24, 2020 · 014498f · 014498f
1 parent 2073790
commit 014498f
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/core/expression/qgsexpressionnodeimpl.cpp b/src/core/expression/qgsexpressionnodeimpl.cpp
@@ -1308,7 +1308,8 @@ QVariant QgsExpressionNodeColumnRef::evalNode( QgsExpression *parent, const QgsE
         return feature.attribute( mName );
     }
   }
-  parent->setEvalErrorString( tr( "Field '%1' not found" ).arg( mName ) );
+  if ( index < 0 )
+    parent->setEvalErrorString( tr( "Field '%1' not found" ).arg( mName ) );
   return QVariant();
 }