Class: Module

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

Overview

Borrowed from active_support/core_ext/module/attribute_accessors.rb 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!"

Instance Method Summary collapse

Instance Method Details

#mattr_accessor(*syms) ⇒ Object 



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# File 'lib/petit/core_ext.rb', line 69

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

#mattr_reader(*syms) ⇒ Object 



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# File 'lib/petit/core_ext.rb', line 30

def mattr_reader(*syms)
  syms.each do |sym|
    next if sym.is_a?(Hash)
    class_eval("      unless defined? @@\#{sym}\n        @@\#{sym} = nil\n      end\n      def self.\#{sym}\n        @@\#{sym}\n      end\n\n      def \#{sym}\n        @@\#{sym}\n      end\n    EOS\n  end\nend\n", __FILE__, __LINE__)

#mattr_writer(*syms) ⇒ Object 



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# File 'lib/petit/core_ext.rb', line 48

def mattr_writer(*syms)
  options = syms.last.is_a?(::Hash) ? pop : {}
  syms.each do |sym|
    class_eval("      unless defined? @@\#{sym}\n        @@\#{sym} = nil\n      end\n\n      def self.\#{sym}=(obj)\n        @@\#{sym} = obj\n      end\n\n      \#{\"\n      def \#{sym}=(obj)\n        @@\#{sym} = obj\n      end\n      \" unless options[:instance_writer] == false }\n    EOS\n  end\nend\n", __FILE__, __LINE__)