Module: DataMapper::Is::Taggable

Included in:
Resource::ClassMethods
Defined in:
lib/dm-is-taggable/is/version.rb,
lib/dm-is-taggable/is/taggable.rb

Defined Under Namespace

Modules: ClassMethods, InstanceMethods

Constant Summary collapse

VERSION = 
"0.9.7"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object

fired when your plugin gets included into Resource



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# File 'lib/dm-is-taggable/is/taggable.rb', line 8

def self.included(base)

end

Instance Method Details

#is_taggable(options = {}) ⇒ Object

Methods that should be included in DataMapper::Model. Normally this should just be your generator, so that the namespace does not get cluttered. ClassMethods and InstanceMethods gets added in the specific resources when you fire is :example



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# File 'lib/dm-is-taggable/is/taggable.rb', line 19

def is_taggable(options={})

  # Add class-methods
  extend  DataMapper::Is::Taggable::ClassMethods
  # Add instance-methods
  include DataMapper::Is::Taggable::InstanceMethods
  
  # Make the magic happen
  options[:by] ||= []
  
  taggers_associations = ""
  options[:by].each do |tagger_class|
    taggers_associations << "belongs_to :#{Extlib::Inflection.underscore(tagger_class.to_s)}\n"
  end
  
  class_eval <<-RUBY
    remix n, :taggings

    enhance :taggings do
      belongs_to :tag
      belongs_to :#{Extlib::Inflection.underscore(self.to_s)}
      #{taggers_associations}
    end
    
    has n, :tags, :through => :#{Extlib::Inflection.underscore(self.to_s)}_tags
  RUBY
  
  Tag.class_eval <<-RUBY
    has n, :#{Extlib::Inflection.underscore(self.to_s)}_tags
    has n, :#{Extlib::Inflection.underscore(self.to_s).pluralize}, :through => :#{Extlib::Inflection.underscore(self.to_s)}_tags
  RUBY
  
  options[:by].each do |tagger_class|
    tagger_class.class_eval <<-RUBY
      is :tagger, :for => [#{self}]
    RUBY
  end
end