Module: InheritableClassAttributes::ClassMethods

Defined in:
lib/inheritable_class_attributes.rb

Instance Method Summary collapse

Instance Method Details

#cattr_inheritable_accessor(*symbols) ⇒ Object 



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# File 'lib/inheritable_class_attributes.rb', line 45

def cattr_inheritable_accessor(*symbols)
  cattr_inheritable_writer(*symbols)
  cattr_inheritable_reader(*symbols)
end

#cattr_inheritable_reader(*symbols) ⇒ Object 



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# File 'lib/inheritable_class_attributes.rb', line 21

def cattr_inheritable_reader(*symbols)
  symbols.each do |symbol|
    self.inheritable_cattr_readers << symbol
    self.module_eval %{
      def self.#{symbol}
        @#{symbol}
      end 
    }
  end
  self.inheritable_cattr_readers.uniq!
end

#cattr_inheritable_writer(*symbols) ⇒ Object 



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# File 'lib/inheritable_class_attributes.rb', line 33

def cattr_inheritable_writer(*symbols)
  symbols.each do |symbol|
    self.inheritable_cattr_writers << symbol
    self.module_eval %{
      def self.#{symbol}=(value)
        @#{symbol} = value
      end 
    }
  end
  self.inheritable_cattr_writers.uniq!
end

#inheritable_cattr_readers ⇒ Object 



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# File 'lib/inheritable_class_attributes.rb', line 13

def inheritable_cattr_readers
  @inheritable_class_readers ||= []
end

#inheritable_cattr_writers ⇒ Object 



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# File 'lib/inheritable_class_attributes.rb', line 17

def inheritable_cattr_writers
  @inheritable_class_writers ||= []
end

#inherited_with_inheritable_class_attributes(klass) ⇒ Object 



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# File 'lib/inheritable_class_attributes.rb', line 50

def inherited_with_inheritable_class_attributes(klass)
  inherited_without_inheritable_class_attributes(klass) if respond_to?(:inherited_without_inheritable_class_attributes)
  
  readers = inheritable_cattr_readers.dup
  writers = inheritable_cattr_writers.dup
  inheritables = [:inheritable_cattr_readers, :inheritable_cattr_writers]
  
  (readers + writers + inheritables).uniq.each do |attr|
    var = "@#{attr}"
    old_value = self.module_eval(var)
    new_value = (old_value.dup rescue old_value)
    klass.module_eval("#{var} = new_value")
  end
end