命名空间控制器无法找到模型虚拟属性方法

Question

我得到以下错误提供的代码。

undefined method `password' for #<User:0x00000002e66980> 

用户模型

class User < ActiveRecord::Base 

    validates_presence_of  :username 
    validates_presence_of  :first_name 
    validates_presence_of  :last_name 
    validates_presence_of  :email 

    validates_uniqueness_of :username 
    validates_uniqueness_of :email 

    attr_accessor    :password_confirmation 
    validates_confirmation_of :password 

    validate     :password_non_blank 

    # password is a virtual attribute 
    def password=(pwd) 
    @password = pwd 

    return if pwd.blank? 
    create_new_salt 
    self.hashed_password = self.class.encrypt_password(pwd, self.password_salt) 
    end 

    def self.authenticate(username, password) 
    if user = self.find_by_username(username) 
     if user.hashed_password == encrypt_password(password, user.password_salt) 
     user 
     end 
    end 
    end 

    def User.encrypt_password(password, password_salt) 
    string_to_hash = password + "woozlewozzle" + password_salt 
    Digest::SHA1.hexdigest(string_to_hash) 
    end 

private 

    def password_non_blank 
    errors.add(:password, "Password cannot be blank.") if hashed_password.blank? 
    end 

    def create_new_salt 
    self.password_salt = self.object_id.to_s + rand.to_s 
    end 

end 

用户控制器

class Admin::UsersController < Admin::AdminController 

    skip_before_filter :authorize 

    # GET /users 
    # GET /users.xml 
    def index 
    @users = User.find(:all, :order => :username) 

    respond_to do |format| 
     format.html # index.html.erb 
    end 
     end 

    # GET /users/1 
    # GET /users/1.xml 
    def show 
    @user = User.find(params[:id]) 

    respond_to do |format| 
     format.html # show.html.erb 
    end 
    end 

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

    respond_to do |format| 
     format.html # new.html.erb 
    end 
    end 

    # GET /users/1/edit 
    def edit 
    @user = User.find(params[:id]) 
    end 

    # POST /users 
    # POST /users.xml 
    def create 
    @user = User.new(params[:user]) 

    respond_to do |format| 
     if @user.save 
     flash[:notice] = "User #{@user.first_name} #{@user.last_name} was created successfully." 
     format.html { redirect_to(:action => 'index') } 
     else 
     format.html { render :action => 'new' } 
     end 
    end 
    end 

    # PUT /users/1 
    # PUT /users/1.xml 
    def update 
    @user = User.find(params[:id]) 

    respond_to do |format| 
     if @user.update_attributes(params[:user]) 
     flash[:notice] = "User #{@user.first_name} #{@user.last_name} was updated successfully." 
     format.html { redirect_to(:action => 'index') } 
     else 
     format.html { render :action => "edit" } 
     end 
    end 
    end 

    # DELETE /users/1 
    # DELETE /users/1.xml 
    def destroy 
    @user = User.find(params[:id]) 
    @user.destroy 

    respond_to do |format| 
     format.html { redirect_to(admin_users_url) } 
    end 
    end 
end 

命名空间路由

namespace 'admin' do 
    get 'admin' => 'manage#index' 
    resources :users 
    end 

用户表单

<%= form_for(@user, :url => admin_users_path(@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 :username %><br /> 
    <%= f.text_field :username %> 
    </div> 
    <div class="field"> 
    <%= f.label :first_name %><br /> 
    <%= f.text_field :first_name %> 
    </div> 
    <div class="field"> 
    <%= f.label :last_name %><br /> 
    <%= f.text_field :last_name %> 
    </div> 
    <div class="field"> 
    <%= f.label :salutation %><br /> 
    <%= f.text_field :salutation %> 
    </div> 
    <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_confirmation, 'Confirm Password' %><br /> 
    <%= f.password_field :password_confirmation %> 
    </div> 
    <div class="actions"> 
    <%= f.submit %> 
    </div> 
<% end %> 

Answer 1

是的，你需要attr_accessor：密码，你不需要attr_accessor：password_confirmation作为validates_confirmation_of：密码会为你创建它。