如何检测在grails中呈现哪个视图文件

问题描述

当使用grails呈现时，我必须知道视图文件。一种方法是过滤器中的Grails afterView动作。在这里，我找不到一个方法来知道哪个视图文件已经被渲染。
所以，有没有什么方法可以让我知道render方法在渲染哪个视图文件？

>这不是很好，但它应该在大多数情况下工作。在或 afterView 之后使用：

<$ p $如果（webRequest.renderView）{
def控制器= request.getAttribute（GrailsApplicationAttributes.CONTROLLER）
$ def webRequest = RequestContextHolder.currentRequestAttributes（）
字符串viewName $ b $ $ b def modelAndView = getModelAndView（）
if（modelAndView&& controller）{
modelAndView = controller.modelAndView
}
if（modelAndView）{
viewName = modelAndView.viewName

else if（controller）{
// no ModelAndView，所以从控制器和动作推断
viewName ='/'+ controllerName +'/' + actionName

$ {
//无控制器，直接GSP
字符串uri = webRequest.attributes.urlHelper.getPathWithinApplication（请求）
for（info in WebUtils .lookupUrlMappings（servletContext）.matchAll（uri））{
if（info？.viewName）{
view Name = info.viewName
break
}
}
}
}

您需要这些导入：

  import org.codehaus.groovy.grails.web .servlet.GrailsApplicationAttributes 
 import org.codehaus.groovy.grails.web.util.WebUtils 
 import org.springframework.web.context.request.RequestContextHolder 
  

I have to know the view file when it is rendered by grails. One way is grails afterView action in filter. Here, I couldn't find a way to know which view file has been rendered.So, Is there any method through which I know which view file has been rendered by render method in action?

解决方案

This isn't pretty, but it should work in most cases. Use this in either after or afterView:

String viewName
def webRequest = RequestContextHolder.currentRequestAttributes()
if (webRequest.renderView) {
   def controller = request.getAttribute(GrailsApplicationAttributes.CONTROLLER)
   def modelAndView = getModelAndView()
   if (!modelAndView && controller) {
      modelAndView = controller.modelAndView
   }
   if (modelAndView) {
      viewName = modelAndView.viewName
   }
   else if (controller) {
      // no ModelAndView, so infer from controller and action
      viewName = '/' + controllerName + '/' + actionName
   }
   else {
      // no controller, direct GSP
      String uri = webRequest.attributes.urlHelper.getPathWithinApplication(request)
      for (info in WebUtils.lookupUrlMappings(servletContext).matchAll(uri)) {
         if (info?.viewName) {
            viewName = info.viewName
            break
         }
      }
   }
}

You'll need these imports:

import org.codehaus.groovy.grails.web.servlet.GrailsApplicationAttributes
import org.codehaus.groovy.grails.web.util.WebUtils
import org.springframework.web.context.request.RequestContextHolder

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