yield in ERB without rails

Question

How can I use yield for template inheritance in erb? I want to use erb in a plain ruby CGI script and want to use a base template and subtemplate like it Rails wit

Answer 1

You can use Tilt but if you don't want to add an extra dependency, here's a better example on how you can yield in erb:

require "erb"

class Controller
  TEMPLATE = ERB.new("Hello <%= @someone %>\n\n<%= yield %>")

  def initialize(someone)
    @someone = someone
  end

  def render
    TEMPLATE.result(self.get_binding { yield })
  end

  def get_binding
    binding
  end
end

puts Controller.new("World").render { "I'm Jack" }
# =>
Hello World

I'm Jack

I found the answer here.