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N:M Relations, support for linking table with default values

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This commit is contained in:
Matthias Kuhn 2017-11-14 10:33:08 +01:00
parent 30eec2b392
commit 0c35dde461
1 changed files with 19 additions and 4 deletions
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23
src/gui/qgsrelationeditorwidget.cpp
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@ -306,12 +306,27 @@ void QgsRelationEditorWidget::addFeature()
QgsFeature f;
if ( vlTools->addFeature( mNmRelation.referencedLayer(), QgsAttributeMap(), QgsGeometry(), &f ) )
{
QgsFeature flink( mRelation.referencingLayer()->fields() ); // Linking feature
// Fields of the linking table
const QgsFields fields = mRelation.referencingLayer()->fields();
flink.setAttribute( mRelation.fieldPairs().at( 0 ).first, mFeature.attribute( mRelation.fieldPairs().at( 0 ).second ) );
flink.setAttribute( mNmRelation.referencingFields().at( 0 ), f.attribute( mNmRelation.referencedFields().at( 0 ) ) );
// Expression context for the linking table
QgsExpressionContext context = mRelation.referencingLayer()->createExpressionContext();
mRelation.referencingLayer()->addFeature( flink );
QgsAttributeMap linkAttributes;
Q_FOREACH ( const QgsRelation::FieldPair &fieldPair, mRelation.fieldPairs() )
{
int index = fields.indexOf( fieldPair.first );
linkAttributes.insert( index, mFeature.attribute( fieldPair.second ) );
}
Q_FOREACH ( const QgsRelation::FieldPair &fieldPair, mNmRelation.fieldPairs() )
{
int index = fields.indexOf( fieldPair.first );
linkAttributes.insert( index, f.attribute( fieldPair.second ) );
}
QgsFeature linkFeature = QgsVectorLayerUtils::createFeature( mRelation.referencingLayer(), QgsGeometry(), linkAttributes, &context );
mRelation.referencingLayer()->addFeature( linkFeature );
updateUi();
}