Module: CarrierWave::ActiveRecord

Includes:
Mount
Defined in:
lib/carrierwave/orm/activerecord.rb

Instance Method Summary collapse

Methods included from Mount

#uploader_option, #uploader_options, #uploaders

Instance Method Details

#mount_uploader(column, uploader = nil, options = {}, &block) ⇒ Object

See CarrierWave::Mount#mount_uploader for documentation



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# File 'lib/carrierwave/orm/activerecord.rb', line 14

def mount_uploader(column, uploader=nil, options={}, &block)
  super

  alias_method :read_uploader, :read_attribute
  alias_method :write_uploader, :write_attribute
  public :read_uploader
  public :write_uploader

  include CarrierWave::Validations::ActiveModel

  validates_integrity_of column if uploader_option(column.to_sym, :validate_integrity)
  validates_processing_of column if uploader_option(column.to_sym, :validate_processing)
  validates_download_of column if uploader_option(column.to_sym, :validate_download)

  after_save :"store_#{column}!"
  before_save :"write_#{column}_identifier"
  after_commit :"remove_#{column}!", :on => :destroy
  after_commit :"mark_remove_#{column}_false", :on => :update
  before_update :"store_previous_model_for_#{column}"
  after_save :"remove_previously_stored_#{column}"

  class_eval <<-RUBY, __FILE__, __LINE__+1
    def #{column}=(new_file)
      column = _mounter(:#{column}).serialization_column
      send(:"\#{column}_will_change!")
      super
    end

    def remote_#{column}_url=(url)
      column = _mounter(:#{column}).serialization_column
      send(:"\#{column}_will_change!")
      super
    end

    def remove_#{column}!
      super
      _mounter(:#{column}).remove = true
      _mounter(:#{column}).write_identifier
    end

    def serializable_hash(options=nil)
      hash = {}

      except = options && options[:except] && Array.wrap(options[:except]).map(&:to_s)
      only   = options && options[:only]   && Array.wrap(options[:only]).map(&:to_s)

      self.class.uploaders.each do |column, uploader|
        if (!only && !except) || (only && only.include?(column.to_s)) || (!only && except && !except.include?(column.to_s))
          hash[column.to_s] = _mounter(column).uploader.serializable_hash
        end
      end
      super(options).merge(hash)
    end
  RUBY

end