在此上下文中将参数传递给ruby函数

disclaimer I am pretty new to Ruby / Rails

免责声明我是Ruby / Rails的新手

I am using RPH::Navigation for creating my navigation menus. What I am trying to do now is add some sub-nav items and I am doing so like this:

我正在使用RPH :: Navigation来创建我的导航菜单。我现在要做的是添加一些子导航项目，我这样做：

  suboptions.each do |group|
    def relpath
      link(group[:link], group[:args]).
    end 
    sub_menu.item group[:name], :path => :relpath
  end

link is just a method that returns "#{link}?#{query_string}" where query_string is built from the args hash.

link只是一个返回“＃{link}？＃{query_string}”的方法，其中query_string是从args哈希构建的。

What I was originally trying to do was something like

我原本想做的事情是这样的

    sub_menu.item group[:name], :path => link(group[:link], group[:args])

but that put the return value in, and later it is called, returning a method not found error.

但是将返回值放入，后来调用它，返回一个找不到方法的错误。

My current approach has the problem that group is not in scope within relpath. I tried also using Proc.new and lambda, but since those are not called like normal functions it chokes on them as well.

我目前的方法有一个问题，即组不在relpath范围内。我也试过使用Proc.new和lambda，但由于它们不像普通函数那样被调用，所以它也会扼杀它们。

What can I do to correct this? What is the proper way?

我该怎么做才能纠正这个问题？什么是正确的方法？

EDIT

编辑

If I do

如果我做

suboptions.each do |group|
  def relpath(group)
    link(group[:link], group[:args]).
  end 
  sub_menu.item group[:name], :path => relpath(group)
end

Then the error I get is:

然后我得到的错误是：

undefined method `mylink?myarg=1' for #<#<Class:0x007fd8068acd58>:0x007fd8068b07f0>

EDIT 2

编辑2

Here is more extensive example of the code.

这是更广泛的代码示例。

menu.item MyTestsController, :text => 'Test', :if => Proc.new { |view| view.can? :read, MyTest } do |sub_menu|
  suboptions = [{:link => "tests", :name => "All Systems", :args => {:system_id => 0}},
                {:link => "tests", :name => "System A", :args => {:system_id => 1}}]
  suboptions.each do |group|
    def relpath(group)
      link(group[:link], group[:args]).
    end 
    sub_menu.item group[:name], :path => relpath(group)
  end 
end

1 个解决方案

#1

I have no experience with the navigation library in question, but looking at the documentation at https://github.com/rpheath/navigation it seems you are expected to give the name of a Rails named route helper as the path argument - not an actual URL route. The "undefined method" is simply generated because RPH::Navigation tries to call a helper method by the name that is defined in :path argument, and in this case Rails cannot find a named route helper method called "mylink?myarg=1". So basically, what you would need to do is to create a named route, and use that as the path.

我没有相关导航库的经验，但是看看https://github.com/rpheath/navigation上的文档，似乎你应该给出一个名为route helper的Rails名称作为路径参数 - 而不是实际的URL路由。简单地生成“未定义的方法”，因为RPH :: Navigation尝试通过在：path参数中定义的名称调用辅助方法，在这种情况下，Rails无法找到名为“mylink？myarg = 1”的命名路由帮助方法。所以基本上，你需要做的是创建一个命名路由，并将其用作路径。

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在此上下文中将参数传递给ruby函数

1 个解决方案

#1

#1

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