SoundSoftware Code Site

class Authorship < ActiveRecord::Base

  unloadable 

  belongs_to :author

  belongs_to :publication

  accepts_nested_attributes_for :author

  accepts_nested_attributes_for :publication

  validates_presence_of :name_on_paper

  attr_accessor :is_user, :author_user_id, :search_name, :identify_author, :search_results

  before_save :associate_author_user

  named_scope :like_unique, lambda {|q| 

    s = "%#{q.to_s.strip.downcase}%"

    {:conditions => ["LOWER(name_on_paper) LIKE :s OR LOWER(email) LIKE :s", {:s => s}],

     :order => 'name_on_paper',

     :group => "name_on_paper, institution, email"

    }

  }

  named_scope :like, lambda {|q| 

    s = "%#{q.to_s.strip.downcase}%"

    {:conditions => ["LOWER(name_on_paper) LIKE :s OR LOWER(email) LIKE :s", {:s => s}],

     :order => 'name_on_paper'

    }

  }

  def name

    return self.name_on_paper

  end

  def <=>(authorship)

    name.downcase <=> authorship.name.downcase

  end

  def mail

    return self.email

  end

  protected 

  def associate_author_user 

    case self.identify_author

      when "no"

        author = Author.new

        author.save

        self.author_id = author.id

      else

        selected = self.search_results

        selected_classname = Kernel.const_get(selected.split('_')[0])

        selected_id = selected.split('_')[1]

        object = selected_classname.find(selected_id)

        if object.respond_to? :name_on_paper

          # Authorship

          self.author_id = object.author.id

        else

          # User

          unless object.author.nil?

            self.author_id = object.author.id

          else

            author = Author.new

            object.author = author

            object.save

            self.author_id = object.author.id

          end

        end

    end      

  end

end