Class: Class

Inherits:
Object show all
Includes:
FixturizeMixin
Defined in:
lib/can_has_fixtures/vendor/class_ext.rb

Overview

Allows attributes to be shared within an inheritance hierarchy, but where each descendant gets a copy of their parents’ attributes, instead of just a pointer to the same. This means that the child can add elements to, for example, an array without those additions being shared with either their parent, siblings, or children, which is unlike the regular class-level attributes that are shared across the entire hierarchy.

Instance Method Summary collapse

Methods included from FixturizeMixin

#fixturize!, #fixturize_description_args, included, #method_missing_with_fixture_check

Instance Method Details

#cattr_accessor(*syms) ⇒ Object 



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# File 'lib/can_has_fixtures/vendor/class_ext.rb', line 54

def cattr_accessor(*syms)
  cattr_reader(*syms)
  cattr_writer(*syms)
end

#cattr_reader(*syms) ⇒ Object 



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# File 'lib/can_has_fixtures/vendor/class_ext.rb', line 13

def cattr_reader(*syms)
  syms.flatten.each do |sym|
    next if sym.is_a?(Hash)
    class_eval(<<-EOS, __FILE__, __LINE__)
      unless defined? @@#{sym}
        @@#{sym} = nil
      end

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

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

#cattr_writer(*syms) ⇒ Object 



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# File 'lib/can_has_fixtures/vendor/class_ext.rb', line 32

def cattr_writer(*syms)
  options = syms.last.is_a?(Hash) ? syms.pop : {}
  syms.flatten.each do |sym|
    class_eval(<<-EOS, __FILE__, __LINE__)
      unless defined? @@#{sym}
        @@#{sym} = nil
      end

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

      #{"

      def #{sym}=(obj)
        @@#{sym} = obj
      end
      " unless options[:instance_writer] == false }
    EOS
  end
end