<?php
/**
 * TbToggleAction CAction Component
 *
 * It is a component that works in conjunction of TbToggleColumn widget. Just attach to the controller you wish to
 * make the calls to.
 *
 * @author: antonio ramirez <antonio@clevertech.biz>
 * Date: 10/16/12
 * Time: 5:40 PM
 */
class TbToggleAction extends CAction
{
	/**
	 * @var string the name of the model we are going to toggle values to
	 */
	public $modelName;

	/**
	 * @var bool whether to throw an exception if we cannot find a model requested by the id
	 */
	public $exceptionOnNullModel = true;

	/**
	 * @var array additional criteria to use to get the model
	 */
	public $additionalCriteriaOnLoadModel = array();

	/**
	 * @var mixed the route to redirect the call after updating attribute
	 */
	public $redirectRoute;

	/**
	 * @var int|string the value to update the model to [yes|no] standard toggle options, but you can toggle any value.
	 */
	public $yesValue = 1;

	/**
	 * @var int|string the value to update the model to [yes|no]
	 */
	public $noValue = 0;

	/**
	 * @var mixed the response to return to an AJAX call when the attribute was successfully saved.
	 */
	public $ajaxResponseOnSuccess = 1;

	/**
	 * @var mixed the response to return to an AJAX call when failed to update the attribute.
	 */
	public $ajaxResponseOnFailed = 0;


	/**
	 * Widgets run function
	 * @param $id
	 * @param $attribute
	 * @throws CHttpException
	 */
	public function run($id, $attribute)
	{
		if (Yii::app()->getRequest()->isPostRequest)
		{
			$model = $this->loadModel($id);
			$model->$attribute = ($model->$attribute == $this->noValue) ? $this->yesValue : $this->noValue;
			$success = $model->save(false, array($attribute));

			if (Yii::app()->getRequest()->isAjaxRequest)
			{
				echo $success ? $this->ajaxResponseOnSuccess : $this->ajaxResponseOnFailed;
				exit(0);
			}
			if ($this->redirectRoute !== null)
				$this->getController()->redirect($this->redirectRoute);
		} else
			throw new CHttpException(Yii::t('zii', 'Invalid request'));
	}

	/**
	 * Loads the requested data model.
	 * @param string the model class name
	 * @param integer the model ID
	 * @param array additional search criteria
	 * @param boolean whether to throw exception if the model is not found. Defaults to true.
	 * @return CActiveRecord the model instance.
	 * @throws CHttpException if the model cannot be found
	 */
	protected function loadModel($id)
	{
		if (empty($this->additionalCriteriaOnLoadModel))
			$model = CActiveRecord::model($this->modelName)->findByPk($id);
		else
		{
			$finder = CActiveRecord::model($this->modelName);
			$c = new CDbCriteria($this->additionalCriteriaOnLoadModel);
			$c->mergeWith(array(
				'condition' => $finder->tableSchema->primaryKey . '=:id',
				'params' => array(':id' => $id),
			));
			$model = $finder->find($c);
		}
		if (isset($model))
			return $model;
		else if ($this->additionalCriteriaOnLoadModel)
			throw new CHttpException(404, 'Unable to find the requested object.');
	}
}