Module: Activeadmin::Dropzone::ClassMethods

Defined in:
lib/activeadmin-dropzone/active_record/dropzone.rb

Instance Method Summary collapse

Instance Method Details

#dropzone(association_name) ⇒ Object 



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# File 'lib/activeadmin-dropzone/active_record/dropzone.rb', line 6

def dropzone(association_name)
  class_eval %Q(
    def self.dropzone_#{ association_name }_class
      self.reflect_on_association(:#{ association_name }).class_name.constantize
    end

    def #{ association_name }_attributes=(attributes)
      original_collection = self.#{ association_name }.to_a

      ActiveRecord::Base.transaction do
        self.#{ association_name } = self.class.dropzone_#{ association_name }_class.find(attributes.select{ |id, hash| !id.blank? and id != '-1' }.map{ |id, hash| id.to_i })

        self.#{ association_name }.each do |dropzone_object|
          attribute = attributes[dropzone_object.id.to_s]
          changes = {}

          title_field = self.class.dropzone_#{ association_name }_class.dropzone_field(:title)
          if dropzone_object.respond_to?(title_field) and dropzone_object.send(title_field) != attribute['title']
            changes[title_field] = attribute['title']
          end

          position_field = self.class.dropzone_#{ association_name }_class.dropzone_field(:position)
          if dropzone_object.respond_to?(position_field) and dropzone_object.send(position_field) != attribute['position'].to_i
            changes[position_field] = attribute['position']
          end

          unless changes.empty?
            dropzone_object.update_attributes changes
          end
        end

        self.update_attribute :#{ association_name }_count, self.#{ association_name }.size if self.respond_to?(:#{ association_name }_count)

        (original_collection - self.#{ association_name }).each do |object|
          object.destroy
        end
      end
    end

    def self.dropzone_#{ association_name }_field(key)
      dropzone_#{ association_name }_class.dropzone_field(key)
    end

    def self.dropzone_#{ association_name }_field?(key)
      dropzone_#{ association_name }_class.dropzone_field?(key)
    end
  )
end

#dropzone_item(options = {}) ⇒ Object 



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# File 'lib/activeadmin-dropzone/active_record/dropzone.rb', line 55

def dropzone_item(options = {})
  options = {
    title: :title,
    position: :position,
    data: :data,
    file_size: :data_file_size,
    url: :data_url
  }.deep_merge(options)

  class_eval %Q(
    def self.dropzone_field(key)
      #{ options }[key.to_sym]
    end

    def self.dropzone_field?(key)
      #{ options }.keys.include? key.to_sym
    end

    def #{ options[:data] }_url
      #{ options[:data] }.url
    end
  )
end