ruby – 使用OpenStruct与ERB的问题

在Ruby 1.9.2中遇到相似类型的错误时,我偶然发现了这个问题.

我是Ruby的新手,所以我无法解释发生了什么.我继续在线搜索,发现this blog post有一种似乎有效的方法.在修改你的例子以纳入这种方法之后,我最终得到以下的工作代码：

require 'ostruct'
require 'erb'

class ErbBinding < OpenStruct
    def geT_Binding
        return binding()
    end
end

data = {:bar => "baz"}
vars = ErbBinding.new(data)

template = "foo <%= bar %>"
erb = ERB.new(templatE)

vars_binding = vars.send(:geT_Binding)
puts erb.result(vars_binding)

附加信息：

当代码通过IRB运行时,我得到：

require 'ostruct'
=> true
require 'erb'
=> true

class ErbBinding < OpenStruct
    def geT_Binding
        return binding()
    end
end
=> nil

data = {:bar => "baz"}
=> {:bar=>"baz"}
vars = ErbBinding.new(data)
=> #<ErbBinding bar="baz">

template = "foo <%= bar %>"
=> "foo <%= bar %>"
erb = ERB.new(templatE)
=> #<ERB:0x2b73370 @safe_level=nil,@src="#coding:IBM437\n_erbout = ''; _erbout.concat \"foo \"; _erbout.concat(( bar ).to_s); _erbout.force_encoding(__ENCODING__)",@enc=#<Encoding:IBM437>,@filename=nil>

vars_binding = vars.send(:geT_Binding)
=> #<Binding:0x2b6d418>
puts erb.result(vars_binding)
foo baz
=> nil