From: Samnang Chhun <samnang.chhun@...>
Date: 2011-01-05T02:29:33+09:00
Subject: Can't get class name

I am learning how to design a DSL by using const_missing, but I face a
problem on getting class name:

class Drawing
  def initialize(&block)
    instance_eval(&block)
  end

  def self.const_missing(constant)
    klass = Class.new do
      def self.<(super_klass)
        puts "#{self.name} inherits from #{super_klass.name}"
      end

      def self.-(association_klass)
        puts "#{self.name} has association with
#{association_klass.name}"
      end
    end

    const_set(constant, klass)
  end
end

Drawing.new do
  Student < Person
  Student - Courses
end

Output:
 inherits from
 has association with

Expected output:
Student inherits from Person
Student has association with Courses

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