问题描述
可能的重复:
PHP:自我与 $this
$this-> 在 CakePHP 中是什么意思?
What does $this-> mean in CakePHP?
请分两部分回答...$this 指的是什么?-> 指的是什么?
Please answer this in two parts...
What does $this refer to?
What does -> refer to?
有人可以根据语句 $this->Post->find('all'); 明确解释每个部分吗?在 Post 控制器中.为什么你需要 ->Post 部分，如果它在 Posts 控制器中?
Can someone explain each part explicitly in terms of the statement $this->Post->find('all'); in the Post controller. Why do you need the ->Post part if it is in the Posts controller?
推荐答案
$this 指的是您要使用的类.例如，如果您看到 $this->Post->find('all')，则您正在尝试访问扩展 AppModel 的 Post 类.通过约定，帖子模型使用数据库中的帖子表.使用 $this->Post->find('all') 是因为 AppModel 有 find() 方法，而 Post 模型扩展了 AppModel.
$this refers to the class you want to use. for instance if you see $this->Post->find('all'), you're trying to access the class Post that extends AppModel. Through conventions, the Post Model uses the posts table in your database. $this->Post->find('all') is used because the AppModel has the find() method and the Post model extends AppModel.
http://api.cakephp.org/class/app-modelhttp://book.cakephp.org/view/22/CakePHP-Conventions
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