ruby-on-rails – 主动管理多个文件/图像上传与回形针

class Gallery < ActiveRecord::Base
  belongs_to :event
  has_many :images

  attr_accessible :name,:publish,:images,:image,:images_attributes
  accepts_nested_attributes_for :images,allow_destroy: true

  validates :name,presence: true

end

class Image < ActiveRecord::Base
  belongs_to :gallery

  attr_accessible :url
  has_attached_file :url,:styles => { :medium => "300x300>",:thumb => "100x100>" }
end


ActiveAdmin.register Gallery do
    form html: { multipart: true }  do |f|
          f.inputs  do
            f.input :name
            f.input :images,as: :file,input_html: { multiple: truE}
          end            
          f.buttons
    end  
end

我有这个错误：

Image(#70319146544460) expected,got ActionDispatch::@R_801_10107@::UploadedFile(#70319105893880)

解决方法

ActiveAdmin.register Gallery do
  form multipart: true do |f|
    f.inputs do
      f.input :name

      f.has_many :images do |p|
        p.input :url
      end
    end

    f.actions
  end
end