gistfile1.txt

[PluginController("ClientAdministrationSection")]
    public class ClientApiController : UmbracoAuthorizedJsonController
    {
        public ClientApiController()
        {
            int i = 0; // for testing only
        }
    
        public IEnumerable<Client> Getall()
        {
            var repository = new ClientRepository();
            return repository.GetAll();
        }

        public Client GetById(int id)
        {
            var repository = new ClientRepository();
            return repository.GetById(id);
        }

        public void PostSave(Client client)
        {
            var repository = new ClientRepository();
            if (client.Id != 0)
            {
                repository.Update(client);    
            }
            else
            {
                repository.Add(client);
            }
        }
    }