Module: CarrierWave::CardMount

Includes:
Mount
Defined in:
mod/carrierwave/lib/carrier_wave/card_mount.rb,
mod/carrierwave/lib/carrier_wave/card_mount/helper.rb

Overview

Adapt carrierwave mount to cards. We translate the active record hooks in https://github.com/carrierwaveuploader/carrierwave/blob/v3.0.5/lib/carrierwave/orm/activerecord.rb to card events.

Defined Under Namespace

Modules: Helper

Instance Method Summary collapse

Instance Method Details

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



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# File 'mod/carrierwave/lib/carrier_wave/card_mount.rb', line 20

def mount_uploader column, uploader=nil, options={}, &block
  options[:mount_on] ||= :db_content
  super

  class_eval <<-RUBY, __FILE__, __LINE__ + 1
    include CarrierWave::CardMount::Helper

    def attachment
      #{column}
    end

    event :store_#{column}_event, :finalize, when: :store_#{column}_event? do
      store_#{column}!
    end

    # remove files only if card has no history
    event :remove_#{column}_event, :finalize, on: :delete, when: :no_history? do
      remove_#{column}!
    end

    event :mark_remove_#{column}_false_event, :finalize, on: :update do
      mark_remove_#{column}_false
    end

    event :reset_previous_changes_for_#{column}_event, :finalize,
          when: :no_history? do
      reset_previous_changes_for_#{column}
    end

    event :remove_previously_stored_#{column}_event, :finalize, on: :update,
          when: :no_history? do
      remove_previously_stored_#{column}
    end

    # don't attempt to store coded images unless ENV specifies it
    def store_#{column}_event?
      !coded? || ENV["STORE_CODED_FILES"]
    end

    def store_attachment!
      set_specific.delete :#{column}
      store_#{column}!
    end

    def attachment_name
      "#{column}".to_sym
    end

    def #{column}=(new_file)
      return if new_file.blank? || identical_file?(new_file)
      self.selected_action_id = Time.now.to_i unless history?
      assign_file(new_file) { super }
    end

    def identical_file? new_file
      return false if new?

      ::File.identical? #{column}.file.to_file, new_file
    rescue StandardError
      false
    end

    def remote_#{column}_url=(url)
      assign_file(url) { super }
    end

    def assign_file file
      db_column = _mounter(:#{column}).serialization_column
      send(:"\#{db_column}_will_change!") unless duplicate?
      if web?
        self.content = file
      else
        send(:"#{column}_will_change!") unless duplicate?
        yield
      end
    end

    def remove_#{column}=(value)
      column = _mounter(:#{column}).serialization_column
      send(:"\#{column}_will_change!")
      super
    end

    def remove_#{column}!
      self.remove_#{column} = true
      write_#{column}_identifier
      self.remove_#{column} = false
      super
    end

    def #{column}_will_change!
      @#{column}_changed = true
      @#{column}_is_changing = true
    end

    def #{column}_is_changing?
      @#{column}_is_changing
    end

    def #{column}_changed?
      @#{column}_changed
    end
  RUBY
end

#uploader_options ⇒ Object 



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# File 'mod/carrierwave/lib/carrier_wave/card_mount.rb', line 16

def uploader_options
  Card.uploader_options ||= {}
end

#uploaders ⇒ Object

Helper # load helper module so it’s available to mounted cards



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# File 'mod/carrierwave/lib/carrier_wave/card_mount.rb', line 12

def uploaders
  Card.uploaders ||= {}
end