Grails控制器重复了所有操作的代码 [英] Grails controllers repeated code for all actions

问题描述

想象这个控制器：

class exampleController{

def action1 = {}

def action2 = {}

def action3 = {}

def action4 = {}

def action5 = {}

}

我希望能够返回此操作中的所有操作控制器相同的参数。想象这：

I want to be able to return in all the action in this controller the same params. Imagining this:

def user = session.user    
[user: user]

有没有办法这样做，除了在所有的操作上编写所有相同的代码？ session.user返回参数只是一个例子。

Is there any way of doing this, besides writing all the same code on all the actions? The session.user return params is just an example. I don't wanna really return it.

推荐答案

一个简单的解决方案是将这个代码放在一个方法中，并从每个action

A simple solution is to put this code in a method and call it from each action

class exampleController{

  def action1 = {getModel()}

  def action2 = {getModel()}

  def action3 = {getModel()}

  def action4 = {getModel()}

  def action5 = {getModel()}

  private getModel() {
    def user = session.user    
    [user: user]    
  }
}

虽然这涉及到一些重复（调用相同的方法）这里发生了什么。当调试/测试控制器时，很容易忘记过滤器和拦截器，这往往会导致像

While this does involve some amount of repetition (invocation of the same method), it's a lot more obvious what's happening here. When debugging/testing a controller it's easy to forget about filters and interceptors, which can often lead to questions like

是在这里吗？

what the @**% is going on here?

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