在CakePHP中，如何从助手中调用AppController方法？ [英] In CakePHP, how do I call an AppController method from a helper?

问题描述

后续问题：在CakePHP中，我在哪里可以放置一个方法来检查会话用户？

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$背景：在我上一个问题中，我被告知正确的地方放置一个方法，例如 levelCheck（）执行用户级别的半复杂评估，并且在几乎所有我的控制器中都需要的是 AppController 。

现在，这种方法对于设计菜单布局和其他视图设备的方式也非常有用。因为这个原因，我想创建一个帮助程序，可以使用这种方法。

问题：我知道它一般皱眉从视图中调用控制器方法...但是没有可行的方法来传递数据来复制此​​方法的函数，也不想在两个地方复制方法（违反DRY方法）。

问题：我该如何从助手中调用此方法，或者是否有更好的方法在视图/元素中提供此方法？

解决方案

我最终使用的解决方案是将方法移动到一个组件（ CurrentUserComponent ）。

从那里，就像调用帮助器头部的组件一样简单...

  App :: uses（'CurrentUserComponent'，'Controller / Component'）; 
  

并引用组件的静态方法：

  CurrentUserComponent :: levelCheck（x，y，z）; 
  

我不认为这完全是在MVC模式的意图，它可怕的，并允许从应用程序中的任何地方访问该方法。

Follow up question to: In CakePHP, where would I put a method that performs a check on the Session User?

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Background: In my previous question, I was informed that the correct place to place a method such as levelCheck() which performs a semi-complicated evaluation of a user's level, and is needed in practically all my controllers, is the AppController.

Now, this method is also incredibly useful for the way I design menu layouts and other view devices. For that reason, I would like to create a helper that can make use of that method.

Problem: I recognize that it's generally frowned upon to call a controller method from the view... however there is no viable way for me to pass data to replicate the function of this method, nor do I want to replicate the method in two places (violating DRY methodology).

Question: How then do I call this method from a helper, or is there a better way to provide use of this method in the view/elements?

解决方案

The solution I ended up using was to move the method to a component (CurrentUserComponent).

From there, it was as simple as calling the component in the head of my helper...

App::uses('CurrentUserComponent', 'Controller/Component');

And referencing the component's static method:

CurrentUserComponent::levelCheck(x,y,z);

I don't think this is entirely within the intention of the MVC pattern, but it doesn't pervert it horribly, and allows access to the method from anywhere in the application.

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