用户未定义的局部变量或方法"密码"

我正在学习本教程，但在验证部分遇到了困难。

我一步一步地遵循了教程，但当我尝试创建将接收密码的虚拟属性时，我得到了以下错误：undefined local variable or method 'password' for User。

这是我的：

user.rb

class User < ApplicationRecord
has_secure_password
validates name, presence: true, length: {maximum: 50}
validates password, presence: true, length: {minimum: 6}
VALID_EMAIL_FORMAT= /A([^@s]+)@((?:[-a-z0-9]+.)+[a-z]{2,})Z/i
validates email, presence: true, length: {maximum: 260}, format: { with: VALID_EMAIL_FORMAT}, uniqueness: {case_sensitive: false}
before_save { self.email = email.downcase, :set_default }
def set_default
self.comissaoAcumuladaAtual = 0 unless self.comissaoAcumuladaAtual
self.comissaoASerRetirada = 0 unless self.comissaoASerRetirada
end
end

users_controller.rb

class UsersController < ApplicationController
def new
@user = User.new
end
def create
@user = User.new(user_params)
if @user.save
redirect to @user, notice: "Cadastro realizado com sucesso."
#sign_in(@user)
else
render action: :new
end
end
private 
def user_params
params.require(:user).permit(:name, :email, :password, :password_confirmation, :tipoPlano, :valorPlano, :indicadoPor)
end
end

new.html.erb

<%= form_for @user do |f| %>
<% if @user.errors.any? %>
<div id="error_explanation">
<div class="alert-error">
O formulário contém <%= pluralize(@user.errors.count, "erro") %>.
</div>
<ul>
<% @user.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :name %>
<%= f.text_field :name %>
</div>
<div class="field">
<%= f.label :email %>
<%= f.email_field :email %>
</div>
<div class="field">
<%= f.label :password %>
<%= f.password_field :password %>
</div>
<div class="field">
<%= f.label :password_confirmation %>
<%= f.password_field :password_confirmation %>
</div>
<div class="field">
<%= f.label :tipoPlano%>
<%= f.text_field :tipoPlano%>
</div>
<div class="field">
<%= f.label :valorPlano%>
<%= f.number_field  :valorPlano, step: 0.01%>
</div>
<div class="actions">
<%= f.submit "Cadastrar"%>
</div>
<% end %>

routes.rb

Rails.application.routes.draw do
resources :users
get    'sign_in'   => 'sessions#new'
post   'sign_in'   => 'sessions#create'
delete 'sign_out'  => 'sessions#destroy'
end

我真的不知道该怎么办。我已经想了至少一个小时了，似乎无法让它发挥作用。我需要在其他地方定义虚拟属性吗？