Ruby On Rails - ActiveRecord:Module 的未定义方法“has_secure_password”

Question

上下文 - 我正在创建一个简单的身份验证，遵循来自 https://www.youtube.com/watch?v=Hw6WtWJwRtU 的逐行指令。

到目前为止已完成的步骤 -

1. 创建了一个用户表。该表有列 user_name 和 password_digest
2. 在用户模型中提到“has_secure_password”
3. 在 gemfile 中取消注释 bcrypt 并执行捆绑安装
4. 创建了一个控制器会话，创建了一个新方法“创建”，该方法具有获取用户名和密码的形式。

错误 - 在登录表单中输入用户名和密码时，我收到错误未定义方法。

目前采取的纠正措施 - 1.检查表架构，表有列password_digest，列类型为varchar 2. gem list - 提到安装了 bcrypt。我关闭了 Rails 服务器并再次重新启动。

请找到sn-p -

用户模型 -

class User < ActiveRecord::
  attr_accessible :user_name, :password
  has_secure_password
  belongs_to :UserType

  def find_by_name(name)
    user = User.find_by(user_name: name)
  end
end

会话控制器 -

class SessionsController < ApplicationController

  def new
  end

  def create
    user = User.find_by_name(params[:user_name])
    if user && user.authenticate(params[:password])
      session[:user_id] = user.id
      redirect_to root_url, notice: "Logged In"
    else
      flash.now.alert = "Email or password is invalid"
      render new
    end
  end
end

会话视图 -

<h1>Log In</h1>

<%= form_tag sessions_path do %>
  <div class="field">
    <%= label_tag :user_name %>
    <%= text_field_tag :user_name, params[:user_name] %>
  </div>
  <div class="field">
    <%= label_tag :password %>
    <%= password_field_tag :password %>
  </div>
  <div class="action"><%= submit_tag "Log In" %></div>
<%end%>

用户表 -

CREATE TABLE "users" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "user_name" varchar, "password_digest" varchar, "UserType_id" integer, "created_at" datetime NOT NULL, "updated_at" datetime NOT NULL);
CREATE INDEX "index_users_on_UserType_id" ON "users" ("UserType_id");

路线 -

Rails.application.routes.draw do

  resources :sessions
  resources :feedback_details
  resources :users
  resources :meetings
  resources :user_types
  root 'sessions#new'

错误日志 -

Started POST "/sessions" for 127.0.0.1 at 2017-01-29 14:24:43 +0530
Processing by SessionsController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"BvROFNObaYS/8Fq8wjTLwh6DiWo5rcLNnfvpdhlxgD2vhEmx2ErXWJRA8ku6bHYBRZ8W2imI2N/+SMMlnuWz+w==", "user_name"=>"tushar", "password"=>"[FILTERED]", "commit"=>"Log In"}
Completed 500 Internal Server Error in 24ms (ActiveRecord: 0.0ms)

NoMethodError (undefined method `has_secure_password' for ActiveRecord:Module):
  app/models/user.rb:2:in `<top (required)>'
  app/controllers/sessions_controller.rb:6:in `create'


  Rendered /usr/lib/ruby/vendor_ruby/action_dispatch/middleware/templates/rescues/_source.erb (8.6ms)
  Rendered /usr/lib/ruby/vendor_ruby/action_dispatch/middleware/templates/rescues/_trace.html.erb (4.0ms)
  Rendered /usr/lib/ruby/vendor_ruby/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.8ms)
  Rendered /usr/lib/ruby/vendor_ruby/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (31.6ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/_markup.html.erb (0.7ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.6ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.6ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/style.css.erb within layouts/inlined_string (0.6ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/console.js.erb within layouts/javascript (25.3ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/main.js.erb within layouts/javascript (0.6ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/error_page.js.erb within layouts/javascript (0.8ms)
  Rendered /var/lib/gems/2.3.0/gems/web-console-2.3.0/lib/web_console/templates/index.html.erb (51.1ms)

如果我需要提供更多信息，请告诉我。

Answer 1

您在这里遗漏了一点代码。

class User < ActiveRecord::Base