Try to convert doubles with comma as decimal point

Author: elpaso

src/core/qgsfield.cpp

@@ -281,6 +281,13 @@ bool QgsField::convertCompatible( QVariant &v ) const
     return true;
   }
 
+  // Give it a chance to convert to double since we accept both comma and dot as decimal point
+  QVariant tmp( v );
+  if ( d->type == QVariant::Double && !tmp.convert( d->type ) )
+  {
+    v = v.toString().replace( ',', '.' );
+  }
+
   if ( !v.convert( d->type ) )
   {
     v = QVariant( d->type );

tests/src/core/testqgsfield.cpp

@@ -346,7 +346,6 @@ void TestQgsField::displayString()
   QCOMPARE( doubleFieldNoPrec.displayString( 5.005005005 ), QString( "5,005005005" ) );
   QCOMPARE( doubleFieldNoPrec.displayString( 599999898999.0 ), QString( "599.999.898.999" ) );
 
-
 }
 
 void TestQgsField::convertCompatible()
@@ -475,6 +474,12 @@ void TestQgsField::convertCompatible()
   QVERIFY( !stringWithLen.convertCompatible( stringVar ) );
   QCOMPARE( stringVar.type(), QVariant::String );
   QCOMPARE( stringVar.toString(), QString( "lon" ) );
+
+  //double with ',' as decimal separator
+  QVariant doubleCommaVar( "1,2345" );
+  QVERIFY( doubleField.convertCompatible( doubleCommaVar ) );
+  QCOMPARE( doubleCommaVar.type(), QVariant::Double );
+  QCOMPARE( doubleCommaVar.toString(), QString( "1.2345" ) );
 }
 
 void TestQgsField::dataStream()