使用回形针通过 Activeadmin Rails 上传文件

标题: 使用回形针通过 Activeadmin Rails 上传文件

ruby
rails generate active_admin:resource Document

ruby
ActiveAdmin.register Document do
  permit_params :name, :attachment
  form do |f|
    f.inputs "Document Details" do
      f.input :name
      f.input :attachment, as: :file
    end
    f.actions
  end
end

ruby
class Document < ActiveRecord::Base
  has_attached_file :attachment
  validates_attachment_content_type :attachment, content_type: ["application/pdf", "application/msword"]
end

ruby
rails db:migrate