Handle arrays in QgsExpression::quotedValue

Author: arnaud-morvan

src/core/qgsexpression.cpp

@@ -4225,6 +4225,16 @@ QString QgsExpression::quotedValue( const QVariant &value, QVariant::Type type )
     case QVariant::Bool:
       return value.toBool() ? "TRUE" : "FALSE";
 
+    case QVariant::List:
+    {
+      QStringList quotedValues;
+      Q_FOREACH ( const QVariant &v, value.toList() )
+      {
+        quotedValues += quotedValue( v );
+      }
+      return QStringLiteral( "array( %1 )" ).arg( quotedValues.join( ", " ) );
+    }
+
     default:
     case QVariant::String:
       return quotedString( value.toString() );

tests/src/core/testqgsexpression.cpp

@@ -2539,6 +2539,8 @@ class TestQgsExpression: public QObject
       QCOMPARE( QgsExpression::quotedValue( QVariant( true ), QVariant::String ), QString( "'true'" ) );
       QCOMPARE( QgsExpression::quotedValue( QVariant() ), QString( "NULL" ) );
       QCOMPARE( QgsExpression::quotedValue( QVariant(), QVariant::String ), QString( "NULL" ) );
+      QVariantList array = QVariantList() << QVariant( 1 ) << QVariant( "a" ) << QVariant();
+      QCOMPARE( QgsExpression::quotedValue( array ), QString( "array( 1, 'a', NULL )" ) );
     }
 
     void reentrant()