grails覆盖重定向控制器方法

问题描述

我试图重写默认的控制器重定向方法，但似乎无法获得以下代码工作。

我创建了一个插件，我是尝试使用doWithDynamicMethods来取代重定向。

  def doWithDynamicMethods = {ctx  - > 
 application.controllerClasses.each（）{controllerClass  - > 
 replaceRedirectMethod（controllerClass）
} 
} 
 
 void replaceRedirectMethod（controllerClass）{
 def oldRedirect = controllerClass.metaClass.pickMethod（redirect，[ Map] as Class []）
 controllerClass.metaClass.redirect = {Map args，Map params  - > 
 //永远不会到达这里
 
 
 code> 

我的签名是否有错，或者我错过了什么？我这样做的原因是我想改变重定向的URI如果满足某些条件，但与日志/打印语句我看到它是在应用程序启动/编译时replaceRedirectMethod，但它doesn当应用程序启动时，通过控制器进行重定向时，不会进入那里。

解决方案

是的，签名是错误的 - 重定向需要一个 Map 参数（请参阅 org.codehaus.groovy.grails.plugins.web.ControllersGrailsPlugin.registerControllerMethods（）
$ p



$ p $ controllerClass。 metaClass.redirect = {Map args - >
//预重定向逻辑
oldRedirect.invoke委托，参数
//后重定向逻辑
}





I am trying to override the default controller redirect method and cannot seem to get the following bit of code to work.

I have created a plugin and I'm trying to use the "doWithDynamicMethods" to replace the redirect.

def doWithDynamicMethods = {ctx ->
   application.controllerClasses.each() { controllerClass ->
      replaceRedirectMethod(controllerClass)
   }
}

void replaceRedirectMethod(controllerClass) {
   def oldRedirect = controllerClass.metaClass.pickMethod("redirect", [Map] as Class[])
   controllerClass.metaClass.redirect = { Map args, Map params ->
      // never seems to get here
   }
}

Do I have the signature wrong or am I missing something? The reason I'm doing this is I'd like to change the uri of the redirect if a certain condition is met but with logging/print statements I see that it is going in the "replaceRedirectMethod" upon application startup/compile but it doesn't go in there when doing a redirect via the controller once the app is started.

解决方案

Yes, the signature is wrong - redirect takes a single Map parameter (see the declaration in org.codehaus.groovy.grails.plugins.web.ControllersGrailsPlugin.registerControllerMethods())

So it should be

controllerClass.metaClass.redirect = { Map args ->
   // pre-redirect logic
   oldRedirect.invoke delegate, args
   // post-redirect logic
}

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