Class: Module

Inherits:
Object
  • Object
show all
Defined in:
lib/a_b_plugin/core_ext/module.rb

Instance Method Summary collapse

Instance Method Details

#mattr_accessor(*syms) ⇒ Object

Extends the module object with module and instance accessors for class attributes, just like the native attr* accessors for instance attributes.

module AppConfiguration
  mattr_accessor :google_api_key
  self.google_api_key = "123456789"

  mattr_accessor :paypal_url
  self.paypal_url = "www.sandbox.paypal.com"
end

AppConfiguration.google_api_key = "overriding the api key!"



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# File 'lib/a_b_plugin/core_ext/module.rb', line 56

def mattr_accessor(*syms)
  mattr_reader(*syms)
  mattr_writer(*syms)
end

#mattr_reader(*syms) ⇒ Object 



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# File 'lib/a_b_plugin/core_ext/module.rb', line 2

def mattr_reader(*syms)
  syms.extract_options!
  syms.each do |sym|
    class_eval(<<-EOS, __FILE__, __LINE__ + 1)
      unless defined? @@#{sym}  # unless defined? @@pagination_options
        @@#{sym} = nil          #   @@pagination_options = nil
      end                       # end

      def self.#{sym}           # def self.pagination_options
        @@#{sym}                #   @@pagination_options
      end                       # end

      def #{sym}                # def pagination_options
        @@#{sym}                #   @@pagination_options
      end                       # end
    EOS
  end
end

#mattr_writer(*syms) ⇒ Object 



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# File 'lib/a_b_plugin/core_ext/module.rb', line 21

def mattr_writer(*syms)
  options = syms.extract_options!
  syms.each do |sym|
    class_eval(<<-EOS, __FILE__, __LINE__ + 1)
      unless defined? @@#{sym}                       # unless defined? @@pagination_options
        @@#{sym} = nil                               #   @@pagination_options = nil
      end                                            # end

      def self.#{sym}=(obj)                          # def self.pagination_options=(obj)
        @@#{sym} = obj                               #   @@pagination_options = obj
      end                                            # end
    EOS

    unless options[:instance_writer] == false
      class_eval(<<-EOS, __FILE__, __LINE__)
        def #{sym}=(obj)                             # def pagination_options=(obj)
          @@#{sym} = obj                             #   @@pagination_options = obj
        end                                          # end
      EOS
    end
  end
end