QgsJoinDialog offers only vector-layer for joining.

SebDieBln · SebDieBln · commit 01603d728ca9 · 2016-01-19T22:06:05.000+01:00
diff --git a/src/app/qgsjoindialog.cpp b/src/app/qgsjoindialog.cpp
@@ -40,6 +40,7 @@ QgsJoinDialog::QgsJoinDialog( QgsVectorLayer* layer, QList<QgsMapLayer*> already
 
   mTargetFieldComboBox->setLayer( mLayer );
 
+  mJoinLayerComboBox->setFilters( QgsMapLayerProxyModel::VectorLayer );
   mJoinLayerComboBox->setExceptedLayerList( alreadyJoinedLayers );
   connect( mJoinLayerComboBox, SIGNAL( layerChanged( QgsMapLayer* ) ), mJoinFieldComboBox, SLOT( setLayer( QgsMapLayer* ) ) );
   connect( mJoinLayerComboBox, SIGNAL( layerChanged( QgsMapLayer* ) ), this, SLOT( joinedLayerChanged( QgsMapLayer* ) ) );
