seminar/custom_gallery/app/models/custom_album.rb

class CustomAlbum
  include Mongoid::Document
  include Mongoid::Timestamps

  include OrbitCategory::Categorizable
  include OrbitTag::Taggable
  include Slug

  field :custom_module
  field :bind_uid
  field :name, as: :slug_title, localize: true
  field :description, localize: true
  field :cover, default: "default"
  field :cover_path   #can  refact
  field :tag_names
  field :uid, type: String
  field :rss2_id, type: String
  field :order, type: Integer, default: -1
  field :resize_gravity
	# has_and_belongs_to_many :tags, :class_name => "CustomGalleryTag"
  has_many :custom_album_images, :autosave => true, :dependent => :destroy
  has_many :custom_album_colors, :autosave => true, :dependent => :destroy
  accepts_nested_attributes_for :custom_album_images, :allow_destroy => true
  accepts_nested_attributes_for :custom_album_colors, :allow_destroy => true
  before_save do |record|
    if record.order.nil? || record.order == -1
      topest_order = CustomAlbum.all.pluck(:order).sort{|a,b| a.to_i<=>b.to_i}.first
      if topest_order.nil? || topest_order == 0
        record.order = -2
      else
        record.order = topest_order - 1
      end
    end
  end
  after_create do
    custom_record_callback(1)
  end
  after_destroy do
    custom_record_callback(-1)
  end
  def custom_record_callback(num)
    if self.custom_module && self.bind_uid.present?
      custom_album_config = CustomAlbumConfig.where(:module=>self.custom_module).first
      if custom_album_config && custom_album_config.custom_record_callback.present? && custom_album_config.bind_model.present?
        target_model = custom_album_config.bind_model.constantize rescue nil
        if target_model
          target_record = target_model.where(custom_album_config.uid_field=>self.bind_uid).first
          target_record.send(custom_album_config.custom_record_callback,num) if target_record
        end
      end
    end
  end
  def resize_gravity
    """
    NorthWestGravity
      Position object at top-left of region
    NorthGravity
      Position object at top-center of region
    NorthEastGravity
      Position object at top-right of region
    WestGravity
      Position object at left-center of region
    CenterGravity
      Position object at center of region
    EastGravity
      Position object at right-center of region
    SouthWestGravity
      Position object at left-bottom of region
    SouthGravity
      Position object at bottom-center of region
    SouthEastGravity
      Position object at bottom-right of region
    """
    tmp = self[:resize_gravity]
    (tmp.blank? ? (CustomAlbumSetting.first.resize_gravity.blank? ? "Center" : CustomAlbumSetting.first.resize_gravity)  : tmp) rescue 'Center'
  end
  def self.find_by_param(input)
    self.find_by(uid: input)
  end
  def self.filter_by_tags(tags=[])
    tags = OrbitHelper.page_tags if tags.blank?
    tags = [tags].flatten.uniq
    if !(tags.include?("all"))
        tag_temp = Tag.all.select{|value| tags.include? value.id.to_s}
        tag_temp_length = 0
        tag_temp.each do |value| 
          if value.name==I18n.t('custom_gallery.show_desc') || value.name==I18n.t('custom_gallery.not_show_desc')
            tag_temp_length+=1
          end
        end
        if tag_temp_length!=0
            if (tags.length - tag_temp_length) == 0
               tags = ['all'] 
            end
        end
    end
    if tags.blank? || (tags.include?("all") rescue false)
      self.all
    else
      tags
      taggings = Tagging.where(:tag_id.in=>tags).map{|item| item.taggable_id}
      self.where(:id.in=>taggings)
    end
  end
  def cover
    tmp = self['cover']
    if tmp=='default'
      tmp = (self.custom_album_images.first.id.to_s rescue 'default')
    end
    tmp
  end
  def cover_path
    tmp = self['cover_path']
    if tmp.nil?
      tmp = (self.custom_album_images.first.file.thumb.url rescue nil)
    end
    tmp
  end
end