如何以编程方式知道在grails中是否存在视图或布局文件 [英] How to know programmatically if a view or a layout file exists in grails

问题描述

我想在获取绝对路径并请求File.exists，但是我不'我知道如何在每个环境中获得这条路径。

我试过 groovyPagesTemplateEngine.getUriWithinGrailsViews（'a-view.gsp'）没有成功。

你可以给我任何指针吗？

预先感谢

解决方案

我看到2个可能性

搜索视图文件

如果构建war文件，您将会看到视图存储在 WEB-INF / grails-app / views 中。您可以搜索该资源。

  def uri = this.getClass（）。getResource（/ grails-app / views / ...）。toURI（）
 if（new File（uri）.exists（））{...} 
  

使用PathMatchingResourcePatternResolver

在 GrailsUrlMappingsTestCase的assertView 方法。

  def patternResolver = new PathMatchingResourcePatternResolver（）
 def pathPattern =grails-app / views /+（（controller）？$ controller / ：）+$ {view}。*
 if（！patternResolver.getResources（pathPattern））{...} 
  

I want to know programmatically if a view or a layout exists in grails.

I am thinking in obtain the absolutepath and ask for File.exists but I don't know how to obtain this path for every enviroment.

I had tried groovyPagesTemplateEngine.getUriWithinGrailsViews('a-view.gsp') without success.

Can you give me any pointer?

thanks in advance

解决方案

I see 2 possibilities

Search for view file

If you build a war file you will see that views are stored in WEB-INF/grails-app/views. You can search for that resource.

def uri = this.getClass().getResource("/grails-app/views/...").toURI()
if(new File(uri).exists()){...}

Use PathMatchingResourcePatternResolver

Find a inspiration in assertView method of GrailsUrlMappingsTestCase.

def patternResolver = new PathMatchingResourcePatternResolver()
def pathPattern = "grails-app/views/" + ((controller) ? "$controller/" : "") + "${view}.*"
if (!patternResolver.getResources(pathPattern)) {...}

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