faq/app/models/qa.rb

# encoding: utf-8

class Qa
  include Mongoid::Document
  include Mongoid::Timestamps

  # include OrbitModel::LanguageRestrict
  include OrbitModel::Status
  include OrbitTag::Taggable
  include OrbitCategory::Categorizable
   include Slug

  field :title,as: :slug_title, localize: true
  field :answer, localize: true

  field :create_user_id
  field :update_user_id
  field :uid, type: String
  field :order_position, type: Integer, default: -1
  
  has_many :qa_links, :autosave => true, :dependent => :destroy
  has_many :qa_files, :autosave => true, :dependent => :destroy
  
  accepts_nested_attributes_for :qa_files, :allow_destroy => true
  accepts_nested_attributes_for :qa_links, :allow_destroy => true

  scope :can_display, ->{where(:is_hidden=>false,:title.ne => "").order_by([:is_top, :desc])}

  
  # belongs_to :qa_category
  
  before_save :clean_values

  # validates :title, :at_least_one => true


  def self.search( category_id = nil )
  
  	if category_id.to_s.size > 0
  	  find(:all, :conditions => {qa_category_id: category_id}).desc( :is_top, :title )
  	else
  	  find(:all).desc( :is_top, :title)
  	end
	
  end

   def self.find_by_param(input)
    self.find_by(uid: input)
  end

  def self.widget_datas
	 where( :is_hidden => false ).desc(:is_top, :created_at)
  end

  protected

  def qa_category_with_title
    self.category.title
  end

  def clean_values
    self.qa_links.each do |link|
      link.delete if link.url.blank? && link.title.blank?
    end
    self.tags.delete('')
  end
  
end