有没有办法添加created_by和modified_by类似于cakePHP中创建和修改的工作方式？

Question

我想知道是否有一种方法可以添加created_by和modified_by类似于CakePHP中的方式created和modified工作方式？

我喜欢这样一个事实:蛋糕可以识别这些字段并自动处理它们,无论模型如何,我根本不需要实现它们.我想使用当前用户ID添加一个类似的功能(在我的应用程序中,总是有一个用户ID,即使它有时可能是0).

我假设起始位置before_save()在app_model中？

-

另外,有没有办法让我自己将蛋糕识别为用户表的外键(类似于它识别的方式user_id),还是我必须手动添加has/belongs to relationship？我问,因为这将在我的大多数模型上进行,所以我宁愿减少冗余代码.

谢谢!

Answer 1

对于问题的第一部分,我使用此行为代码来完成您正在寻找的内容:

class UserLinkBehavior extends ModelBehavior
{
    /**
     * The string to use to retrieve the user id from CakeSession
     *
     * @var string
     */
    var $user_id_key = 'Auth.User.id';

    function setup(&$model, $settings)
    {
        if(isset($settings['user_id_key']))
        {
            $this->user_id_key = $settings['user_id_key'];
        }
    }

    function beforeSave(&$model)
    {
        App::uses('CakeSession', 'Model/Datasource');

        $logged_user_id = CakeSession::read($this->user_id_key);

        if(isset($logged_user_id))
        {
            $this->set_user_on_current_model($model, $logged_user_id);
        }

        return true;
    }

    /**
     * Set the created_by and modified_by user id on the current model
     *
     * @param Model $model
     * @param int $logged_user_id
     * @return void
     */
    private function set_user_on_current_model(&$model, $logged_user_id)
    {
        if(isset($logged_user_id))
        {
            /*
             * Id is not set -> it is a creation
             */
            if($model->hasField('created_by') && (!isset($model->data[$model->alias]['id']) || empty($model->data[$model->alias]['id'])))
            {
                if(!isset($model->data[$model->alias]['created_by']))
                {
                    $model->data[$model->alias]['created_by'] = $logged_user_id;

                    /*
                     * If the save is called with a whitelist, add 'created_by' to the whitelist
                     * in order to have this field saved as well
                     */
                    if(!empty($model->whitelist) && !in_array('created_by', $model->whitelist))
                    {
                        $model->whitelist[] = 'created_by';
                    }
                }
            }

            /*
             * Id is set -> it is an update
             */
            if($model->hasField('modified_by') && isset($model->data[$model->alias]['id']) && !empty($model->data[$model->alias]['id']))
            {
                $model->data[$model->alias]['modified_by'] = $logged_user_id;

                /*
                 * If the save is called with a whitelist, add 'modified_by' to the whitelist
                 * in order to have this field saved as well
                 */
                if(!empty($model->whitelist) && !in_array('modified_by', $model->whitelist))
                {
                    $model->whitelist[] = 'modified_by';
                }
            }
        }
    }
}

然后在模型或AppModel中声明它

var $actsAs = array('UserLink');

对于问题的第二部分,您可以添加对行为的beforeFind()回调,并使用model-> bindModel()函数将具有created_by和modified_by字段的模型与User模型链接.Personaly我喜欢在需要时手动在每个模型中声明这些链接.