Class: Gifted::Decorator

Inherits:
Object
  • Object
show all
Includes:
Singleton
Defined in:
lib/gifted/decorator.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Decorator

Returns a new instance of Decorator.



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# File 'lib/gifted/decorator.rb', line 12

def initialize
  @@decorators = {}
end

Instance Method Details

#decorate(obj) ⇒ Object 



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# File 'lib/gifted/decorator.rb', line 16

def decorate(obj)
  if obj.is_a?(Array)
    obj.each { |r| decorate r }
  elsif obj.is_a?(Hash)
    obj.each_value { |v| decorate v }
  elsif obj.is_a?(ActiveRecord::Relation)
    extend_with_relation_decorator obj
  else
    extend_with_decorated obj

    return obj unless (d = decorator_for(obj.class))

    # !! The original monkey patched code.
    # obj.extend d unless obj.is_a? d

    # The new hotness, which mixes in a single "parent" method called `gift`, that isolates all
    # decorated methods; avoiding confusion as to which methods are decorated and which are not.
    #
    # Example:
    #   object.gift.my_decorated_method
    #   object.my_non_decorated_method
    #
    # Instead of extending (decorating) the given object with the decorator module, this extends
    # it with Gifted::Gift, and sets the default decorator as the calculated decorator module
    # above. Gifted::Gift extends the object with one method; `gift`, which returns the
    # default decorator.
    obj.extend(::Gifted::Gift).default_decorator = d unless obj.is_a? ::Gifted::Gift
  end

  obj
end

#decorate_association(owner, target) ⇒ Object

Decorates AR model object’s association only when the object was decorated. Returns the association instance.



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# File 'lib/gifted/decorator.rb', line 50

def decorate_association(owner, target)
  owner.is_a?(Gifted::Decorated) ? decorate(target) : target
end