controller

public function datatab($action='read'){
         if (IS_AJAX) {
                $action = $this->request->post('action');
                switch ($action){
                        default:
                                $this->read();
                        break;
                        case 'read':
                                $this->read();
                        break;
                        case 'create':
                                $this->create($this->request->post('data'));
                        break;
                        case 'edit':
                                $this->update($this->request->post('id'));
                        break;
                        case 'remove':
                                $this->delete($this->request->post('data'));
                        break;
                }
        }
     }

     private function create($database){
        $data = $this->rest->getRequest();
        $data['requestMethod'] = $this->rest->requestMethod;
        $this->datasiswa->tambah($database);
        $this->outputJSON($data, 200);
    }

    private function read(){
        $data = $this->rest->getRequest();
        $data['requestMethod'] = $this->rest->requestMethod;
        $data['aaData'] = $this->datasiswa->viewall();
        $this->outputJSON($data, 200);
    }

    private function update($id){
        $data = $this->rest->getRequest();
        $data['requestMethod'] = $this->rest->requestMethod;
        $values= $this->request->post('data');
        $where = array('id'=> $this->request->post('id',FILTER_SANITIZE_NUMBER_INT));
        $this->datasiswa->edit($database,$where);
        $this->outputJSON($data, 200);
    }

    private function delete($where){
        $data = $this->rest->getRequest();
        $data['requestMethod'] = $this->rest->requestMethod;
        $this->datasiswa->hapusbyid($where);
        $this->outputJSON($data, 200);
    }