personal-journal/app/models/journal_paper.rb

class JournalPaper
  include Mongoid::Document
  include Mongoid::Timestamps
  include Mongoid::Attributes::Dynamic

  include OrbitModel::Status
  include MemberHelper
  include Slug

  field :paper_title, as: :slug_title, type: String, localize: true
  field :journal_title, type: String, localize: true
  field :year, type: String
  field :language, type: String
  field :isbn, type: String
  field :vol_no, type: String
  field :issue_no, type: String
  field :form_to_start, type: String
  field :form_to_end, type: String
  field :total_pages, type: String
  field :keywords, type: String
  field :abstract, type: String
  field :publication_date, type: DateTime
  field :url, type: String
  field :note, type: String

  paginates_per 10
  
  #relations
  belongs_to :member_profile
  belongs_to :journal_paper_type
  has_and_belongs_to_many :journal_levels

  has_many :journal_paper_files, autosave: true, dependent: :destroy
  accepts_nested_attributes_for :journal_paper_files

  has_and_belongs_to_many :journal_paper_authors
  accepts_nested_attributes_for :journal_paper_authors

  after_save :save_journal_paper_files, :save_journal_paper_authors

  before_validation :add_http
  validates :paper_title, presence: true

  def create_link
    title = []

    title << self.member_profile.name if self.member_profile_id.present?
    title << (!self.journal_levels.blank? ? "#{self.journal_paper_authors.collect{|j| j.name}.join(', ')}" : nil)
    if !self.publication_date.nil?
      pd = self.publication_date.strftime("%Y-%m-%d").split('-')
      title << pd[0]
    end
    title << self.paper_title if self.paper_title.present?
    title << self.journal_title if self.journal_title.present?
    title << self.vol_no if (self.vol_no.present? && self.vol_no != "0")
    title << self.issue_no if (self.issue_no.present? && self.issue_no != "0")
    title << "pp"+self.form_to_start+"-"+self.form_to_end if (self.form_to_start.present? && self.form_to_start != "0")
    title << ( !self.journal_levels.blank? ? "(#{self.journal_levels.collect{|x| x.title}.join(', ')})" : nil)
    title.join(', ') 
  end

  def authors
    authors = []
    authors << self.member_profile.name if self.member_profile_id.present?
    authors << (!self.journal_levels.blank? ? "#{self.journal_paper_authors.collect{|j| j.name}.join(', ')}" : nil)
    authors.join(', ')
  end

  def self.member_data
    members = MemberProfile.all
    member_data = [] 
    members.each do |m| 
      member_data << {"memberId" => m.id.to_s, "memberName" => m.name}
    end
    member_data.to_json
  end

  def save_journal_paper_files
    self.journal_paper_files.each do |t|
      if t.should_destroy
        t.destroy
      end
    end
  end

  def save_journal_paper_authors
    self.journal_paper_authors.each do |t|
      if t.should_destroy
        t.destroy
      end
    end
  end

  def values_for_view
    attribute_values = self.attributes.select{|k,v| v if (k.in?(["year","language","isbn","vol_no","issue_no","form_to_start","form_to_end","total_pages","keywords","abstract","publication_date","url","note"]) && v.present?)}
    localized_fields = {"paper_title" => self.attributes["paper_title"][I18n.locale], "journal_title" => self.attributes["journal_title"][I18n.locale]}
    authors = {"authors" => self.authors}
    files = {}
    files = self.journal_paper_files.collect do |f| {f.title => url_to_file(f.journal_file.url, f.title)} end
    values = [attribute_values, localized_fields, authors] + files
    values.inject(&:merge)
  end

  protected

  def add_http
    unless self.url.blank? || self.url[/^http:\/\//] || self.url[/^https:\/\//]
      self.url = 'http://' + self.url
    end
  end

end