Re: setting local variables via eval

< ^ > P N |<>|^_>< --- | ~ ...Help
On 3/11/08, ara howard <ara.t.howard / gmail.com> wrote:
>
>  thought some here might appreciate this
>
>    http://drawohara.com/post/28514698
>
>  kind regards
>
>  a @ http://codeforpeople.com/

No need for Object#context

  class View
    def initialize template
      @template = template
    end

    def render locals = {}
      context = binding
      locals.each do |k, v|
        var = k
        value = "ObjectSpace._id2ref #{ v.object_id }"
        definition = "#{ var } = #{ value }"
        eval definition, context
      end
      double_quoted_heredoc = ['<<__template__', @template,
'__template__'].join("\n")
      eval double_quoted_heredoc, context
    end
  end

  view = View.new '<body> #{ x + y } </body>'

  puts view.render(:x => 40, :y => 2)  #=> <body> 42 </body>

Works just as well.
-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/