Dynamic Dispatch on Eigenclass for Regex matched callers

dynamic_dispatch.rb

 def method_missing(name, *args)
    if name =~ /^get_stores_by_/
      eigenclass = class << self; self; end # flatten scope
      eigenclass.class_eval do
        define_method(name) do |*args|
          query = "#{@base_url}/store/#{name.to_s.camelize(:lower)}.json?"
          args[0].collect do |key, value|
            if value.is_a? Array
              value.each {|v| query << "#{key.to_s.camelize(:lower)}=#{v.to_s}&"}
            else
              query << "#{key.to_s.camelize(:lower)}=#{value.to_s}&"
            end
          end
          execute_request(URI::escape(query.chomp("&")))
        end
      end
      self.send(name, *args)
    else
      super
    end
  end