得到错误因为无法自动加载常量UsersController

Question

我在访问/users/newRails 4 时遇到错误Unable to autoload constant UsersController, expecting /app/controllers/users_controller.rb to define it.

这是控制器代码

    class UserController < ApplicationController
     def new
      @user = User.new
     end

     def create
      @user = User.new(params[:user]).permit(:email,  :password,:password_confirmation)

      respond_to do |format|
       if @user.save
        format.html { redirect_to new_user_path, 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 
  end

我的观点new.html.erb是:

  <h1>Sign up</h1>

  <%= form_for(@user)  do |f| %>

    <% if @user.errors.any? %>
      <div id="error_explanation">
        <h2><%= pluralize(@user.errors.count, "error") %> prohibited this post 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_confirmation, "Confirmation" %>
    <%= f.password_field :password_confirmation %>
   </div>
   <div class="actions">
    <%= f.submit "Create my account" %>
   </div>
 <% end %>

User 模型:

class User < ActiveRecord::Base
  has_many :projects
  has_many :pledges
  has_many :posts
  has_many :comments
end

Answer 1

Rails期望控制器名称是多元化的.您发布的第一个文件内容的第一行写为单数:

在/app/controllers/users_controller.rb你有:

class User Controller <ApplicationController

相反,它应该是:

class Users Controller <ApplicationController

此Rails指南提供了在路由文件中定义资源的示例.此外,还有一个信息性说明解释了使用该resource方法定义路径将始终映射到控制器的复数名称.

这是指南中的信息性说明.

因为您可能希望对单个路径(/ account)和复数路径(/ accounts/45)使用相同的控制器,所以单个资源映射到多个控制器.因此,例如,资源:照片和资源:照片创建映射到同一控制器(PhotosController)的单个和多个路线.

source:资源路由:Rails默认