void TestQgsFields::allAttrsList()
{
QgsFields fields;
QgsAttributeList attrList = fields.allAttributesList();
QVERIFY( attrList.isEmpty() );
QgsField field( QString( "testfield" ) );
fields.append( field );
QgsField field2( QString( "testfield2" ) );
fields.append( field2 );
QgsField field3( QString( "testfield3" ) );
fields.append( field3 );
attrList = fields.allAttributesList();
QCOMPARE( attrList.at( 0 ), 0 );
QCOMPARE( attrList.at( 1 ), 1 );
QCOMPARE( attrList.at( 2 ), 2 );
}
void QgsDualView::columnBoxInit()
{
// load fields
QList<QgsField> fields = mLayerCache->layer()->fields().toList();
QString defaultField;
// default expression: saved value
QString displayExpression = mLayerCache->layer()->displayExpression();
// if no display expression is saved: use display field instead
if ( displayExpression.isEmpty() )
{
if ( !mLayerCache->layer()->displayField().isEmpty() )
{
defaultField = mLayerCache->layer()->displayField();
displayExpression = QString( "COALESCE(\"%1\", '<NULL>')" ).arg( defaultField );
}
}
// if neither display expression nor display field is saved...
if ( displayExpression.isEmpty() )
{
QgsAttributeList pkAttrs = mLayerCache->layer()->pkAttributeList();
if ( !pkAttrs.isEmpty() )
{
if ( pkAttrs.size() == 1 )
defaultField = pkAttrs.at( 0 );
// ... If there are primary key(s) defined
QStringList pkFields;
Q_FOREACH ( int attr, pkAttrs )
{
pkFields.append( "COALESCE(\"" + fields[attr].name() + "\", '<NULL>')" );
}
displayExpression = pkFields.join( "||', '||" );
}
