ruby-on-rails – Rails&Devise：设计未显示在rails控制台中

irb(main):002:0> User.new
=> #<User id: nil,first_name: nil,last_name: nil,email: nil,created_at: nil,updated_at: nil>

为什么设计专栏没有出现？

CreateUsers迁移：

class CreateUsers < ActiveRecord::Migration
  def change
    create_table :users do |t|
      t.string :first_name
      t.string :last_name
      t.string :email


      t.timestamps null: false
    end
  end
end

AddDeviseToUsers迁移：

class AddDeviseToUsers < ActiveRecord::Migration
  def self.up
    change_table :users do |t|
      ## Database authenticatable
      t.string :email,null: false,default: ""
      t.string :encrypted_password,default: ""

      ## Recoverable
      t.string   :reset_password_token
      t.datetime :reset_password_sent_at

      ## Rememberable
      t.datetime :remember_created_at

      ## Trackable
      t.integer  :sign_in_count,default: 0,null: false
      t.datetime :current_sign_in_at
      t.datetime :last_sign_in_at
      t.string   :current_sign_in_ip
      t.string   :last_sign_in_ip

      ## Confirmable
      # t.string   :confirmation_token
      # t.datetime :confirmed_at
      # t.datetime :confirmation_sent_at
      # t.string   :unconfirmed_email # Only if using reconfirmable

      ## Lockable
      # t.integer  :failed_attempts,null: false # Only if lock strategy is :failed_attempts
      # t.string   :unlock_token # Only if unlock strategy is :email or :both
      # t.datetime :locked_at


      # Uncomment below if timestamps were not included in your original model.
      # t.timestamps null: false
    end

    add_index :users,:email,unique: true
    add_index :users,:reset_password_token,unique: true
    # add_index :users,:confirmation_token,:unlock_token,unique: true
  end

  def self.down
    # By default,we don't want to make any assumption about how to roll back a migration when your
    # model already existed. Please edit below which fields you would like to remove in this migration.
    raise ActiveRecord::IrreversibleMigration
  end
end

架构显示列在那里：

create_table "users",force: :cascade do |t|
    t.string   "first_name"
    t.string   "last_name"
    t.datetime "created_at",null: false
    t.datetime "updated_at",null: false
    t.string   "email",default: "",null: false
    t.string   "encrypted_password",null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
  end

  add_index "users",["email"],name: "index_users_on_email",unique: true
  add_index "users",["reset_password_token"],name: "index_users_on_reset_password_token",unique: true

有任何想法吗？