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_writer :search_author_id , :search_author_class

  attr_writer :search_author_tie

  ### attr_accessor :search_results, :identify_author

  ## attr_writer :search_author_class

  before_save :set_author

  before_update :delete_publication_cache

  # tod: review scope of ordering

  acts_as_list :column => 'auth_order'

  # todo: review usage of scope --lf.20130108

  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"

    }

  }

  # todo: review usage of scope --lf.20130108

  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 search_author_class

    # Authorship must always have an Author

    # unless it hasn't been saved yet

    # using default setter (attr_writer)

    if self.author.nil?

      aclass = ""

    else

      aclass = "Author"

    end

    @search_author_class || aclass

  end

  def search_author_id

    if self.author.nil?

      authid = ""

    else

      authid = author_id

    end

    @search_author_id || authid

  end

  def search_author_tie

    if self.author.nil?

      auth_tie = false

    else

      auth_tie = true

    end

    @search_author_tie || auth_tie

  end

  def name

    return self.name_on_paper

  end

  def <=>(authorship)

    name.downcase <=> authorship.name.downcase

  end

  def mail

    return self.email

  end

  protected

  def delete_publication_cache

    publication = Publication.find(self.publication_id)

    Rails.cache.delete "publication-#{publication.id}-ieee"

    Rails.cache.delete "publication-#{publication.id}-bibtex"

  end

  private

  def set_author

    # do we want to associate the authorship

    #  with an existing author/user?

    if @search_author_tie

      # if an author, simply associates with it

      # if an user, checks if it has already an author associated with it

      #   if so, associates with that author

      #   otherwise, creates a new author

      case @search_author_class

      when ""

        author = Author.new

        author.save

      when "User"

        user = User.find(@search_author_id)

        if user.author.nil?

          # User w/o author:

          # create new author and update user

          author = Author.new

          author.save

          user.author = author

          user.save

        else

          author = user.author

        end

      when "Author"

        author = Author.find(@search_author_id)

      end

    # if we don't want to associate with an existing author/user

    else

      # todo: should we delete any previously existing relationship?

      author = Author.new

      author.save

    end

    self.author = author

  end

end