Module: PaperclipAsync

Defined in:
lib/paperclip_async.rb,
lib/paperclip_async/railtie.rb,
lib/paperclip_async/version.rb

Defined Under Namespace

Classes: Railtie

Constant Summary collapse

VERSION = 
"0.0.2"

Instance Method Summary collapse

Instance Method Details

#paperclip_async(attachment, options = {}) ⇒ Object 



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# File 'lib/paperclip_async.rb', line 5

def paperclip_async attachment, options = {}
  raise "class #{self.name} doesn't have paperclip attachment named #{attachment}" unless attachment_definitions.keys.include?(attachment.to_sym)
  instance_eval <<-CODE, __FILE__, __LINE__ +1
    attr_accessor :post_process_#{attachment}, :#{attachment}_marked_to_process
    
    before_post_process do
      self.#{attachment}_marked_to_process= !post_process_#{attachment}
      post_process_#{attachment} ? true : false 
    end
    
    after_commit if: ->(o){ o.#{attachment}_marked_to_process && o.persisted? } do
      self.class.delay(#{options}).process_attachment(self.id, :#{attachment})
    end
  CODE
  
  unless respond_to?(:process_attachment)
    define_singleton_method :process_attachment do |id, attachment_name|
      object = find(id)
      object.send "post_process_#{attachment_name}=", true
      attachment_object = object.send(attachment_name)
      styles = attachment_object.styles.keys
      attachment_object.options[:only_process] = styles
      attachment_object.assign(attachment_object)
      unless styles.include? :original
        file = attachment_object.queued_for_write.delete(:original) 
        if file
          file.close unless file.closed?
          file.unlink if file.respond_to?(:unlink) && file.path.present? && File.exist?(file.path)
        end
      end
      attachment_object.save
    end
  end
end