block13.dart

blockOrUnblock(Client client) async {
    final db = await database;
    Client blocked = Client(
        id: client.id,
        firstName: client.firstName,
        lastName: client.lastName,
        blocked: !client.blocked);
    var res = await db.update("Client", blocked.toMap(),
        where: "id = ?", whereArgs: [client.id]);
    return res;
  }