function add this- autoRender false if empty this- data usr_id this- d

function add() {
        $this->autoRender = false;
		if (!empty($this->data)) {
            $usr_id = $this->data['Comment']['user_id'];
            $this->data['Comment']['sub_id'] = 1;
			$this->Comment->create();
			if ($this->Comment->save($this->data)) {
				$this->Session->setFlash(__('The Comment has been saved', true));
				$this->redirect(array('controller' => 'users', 'action'=>'view/'.$usr_id));
			} else {
				$this->Session->setFlash(__('The Comment could not be saved. Please, try again.', true));
                $this->redirect(array('controller' => 'users', 'action'=>'view/'.$usr_id));
			}
		}
	}

	function edit($id = null) {
		if (!$id && empty($this->data)) {
			$this->Session->setFlash(__('Invalid Comment', true));
			$this->redirect(array('action'=>'index'));
		}
		if (!empty($this->data)) {
			if ($this->Comment->save($this->data)) {
				$this->Session->setFlash(__('The Comment has been saved', true));
				$this->redirect(array('action'=>'index'));
			} else {
				$this->Session->setFlash(__('The Comment could not be saved. Please, try again.', true));
			}
		}
		if (empty($this->data)) {
			$this->data = $this->Comment->read(null, $id);
		}
		$users = $this->Comment->User->find('list');
		$user2s = $this->Comment->User2->find('list');
		$this->set(compact('users','user2s'));
	}