无方法错误Railscast 250-轨道4

我花了一段时间来尝试和搜索调试这个问题的答案。

我在关注 Railscast 250 (Authentication from scratch) 其用于轨道4上的轨道3。 很明显,有一个强参数的问题,我想我已经用通常的方法解决了。 我当前收到此错误:

#用户的未定义方法“密码”:0xb640d880

提取的来源(第32行附近): responsed_to-do|格式|

 if @user.save
   format.html { redirect_to @user, notice: 'User was successfully created.' }
   format.json { render action: 'show', status: :created, location: @user }
 else

我知道控制器可以访问password属性,但由于某种原因,即使我正在验证:password在模型中的存在,模型也不能访问。

用户.rb

class User < ActiveRecord::Base
before_save :encrypt_password
validates_confirmation_of :password
validates_presence_of :password, :on => :create
validates_presence_of :email
validates_uniqueness_of :email

def encrypt_password
    if password.present?
        self.password_salt = BCrypt::Engine.generate_salt
        self.password_hash = BCrypt::Engine.hash_secret(password, password_salt)
    end
end
end

用户_控制器.rb

class UsersController < ApplicationController
  before_action :set_user, only: [:show, :edit, :update, :destroy]

  # GET /users
  # GET /users.json
  def index
    @users = User.all
  end

  # GET /users/1
  # GET /users/1.json
  def show
  end

  # GET /users/new
  def new
    @user = User.new
  end

  # GET /users/1/edit
  def edit
  end

  # POST /users
  # POST /users.json
  def create
    logger.warn user_params[:password]
    @user = User.new(email: user_params[:email], password_hash: user_params[:password_hash], password_salt: user_params[:password_salt])

respond_to do |format|
  if @user.save
    format.html { redirect_to @user, notice: 'User was successfully created.' }
    format.json { render action: 'show', status: :created, location: @user }
  else
    format.html { render action: 'new' }
    format.json { render json: @user.errors, status: :unprocessable_entity }
  end
end
  end

  # PATCH/PUT /users/1
  # PATCH/PUT /users/1.json
  def update
        respond_to do |format|
          if @user.update(user_params)
           format.html { redirect_to @user, notice: 'User was successfully updated.' }
            format.json { head :no_content }
          else
            format.html { render action: 'edit' }
            format.json { render json: @user.errors, status: :unprocessable_entity }
          end
        end
  end

  # DELETE /users/1
  # DELETE /users/1.json
 def destroy
    @user.destroy
    respond_to do |format|
      format.html { redirect_to users_url }
      format.json { head :no_content }
    end
  end
  private

    # Use callbacks to share common setup or constraints between actions.
    def set_user
      @user = User.find(params[:id])
    end

    # Never trust parameters from the scary internet, only allow the white list through.
    def user_params
      params.require(:user).permit(:email, :password_hash, :password_salt, :password)
    end
end

_form.html.erb(视图)

<%= form_for(@user) do |f| %>
    <% if @user.errors.any? %>
      <div id="error_explanation">
        <h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>

        <ul>
    <% @user.errors.full_messages.each do |msg| %>
      <li><%= msg %></li>
    <% end %>
    </ul>
  </div>
<% end %>

<div class="field">
  <%= f.label :email %><br>
  <%= f.text_field :email %>
</div>
<div class="field">
  <%= f.label :password %><br>
  <%= f.password_field :password %>
</div>
<div class="field">
  <%= f.label :password %><br>
  <%= f.password_field :password %>
</div>
<div class="actions">
  <%= f.submit %>
</div>
  <% end %>

谢谢你的帮助!