Question

我的红宝石版本是1.9.1。这是我想要开发的ruby中的第一个项目。我收到了错误 “NameError（未定义的局部变量或方法request' for #<User:0x3ab7220>): app/models/user.rb:36:in login' app / controllers / user_controller.rb：7：在`signup'“

当我尝试输入一些细节并保存记录时。这是控制器类

class UserController < ApplicationController   
  def signup 
    if request.post? and params[:user]
      @user = User.new(params[:user])
      if @user.save
        session[:user] = @user
        flash[:notice] = "User #(@user.login) created !"
        redirect_to :action =>"home"
      else
        flash[:error]="Signup unsuccessful"
        @user.clear_password!
      end
    end
  end

  def home
    @title = "Bookshelf - User Home" 
  end

我的signup.html

<div id="signup_content">
<span class="title">Sign-up for a BookShelf account...</span>
<% form_for :user, @user, :url => {:action => "signup" } do |f| %>  
    <%= error_messages_for 'user' %><br/>

    <div class="signup_field">
        <label for="user_login">Login:</label>
        <%= f.text_field :login %><br/>
      </div>

    <div class="signup_field">
        <label for="user_first_name">First Name:</label>
        <%= f.text_field :first_name %><br/>
    </div>

    <div class="signup_field">
        <label for="user_password_confirmation">Password Confirmation:</label>
        <%= f.password_field :password_confirmation %>
    </div>

    <%= submit_tag "Signup" %>
<% end %>

application.html

<html>
  <head>
    <title><%= @title %></title>
    <%= stylesheet_link_tag "style" %>
    <%= javascript_include_tag :defaults %>
  </head>
  <body>
    <div id="header">
        <div id ="logo_image">
            <%= link_to image_tag('main_logo.png'), 
            :controller=>'home', :action=>'index' %>
        </div>

        <% if !session[:user] %>
            <%= render :partial=>"user/signin" %>
        <% else %>  
            <div id ="user_menu"><%= link_to 'Logout',:controller=>'user',:action=>'logout'%>
            </div>
        <% end %>
        <div style="clear: both;height:0px;"></div>
    </div>          
    <%= render :partial=> "shared/sidebar" %>
    <div id="Content">
        <% if flash[:notice] -%>
        <div id="notice"><%= flash[:notice] %></div>
        <% end -%>
        <% if flash[:error] -%>
        <div id="error"><%= flash[:error] %></div>
        <% end -%>
        <!-- <%= yield %> uncommenting solved the double rendering problem-->                       
    </div>
  </body>
</html>

Answer 1

正如评论者指出的那样，您的错误位于user.rb。您正在尝试访问控制器的request方法，但您不能，因为此时您已进入User类。通常，模型层（在这种情况下为User）不应该知道有关其他层（控制器和视图层）的任何信息。控制器旨在处理与请求和响应相关的事务。您可能需要阅读MVC in Rails或MVC in general。

未定义的局部变量或方法`request'

1 个答案: