文章/答案/技术大牛

发布

社区首页 >问答首页 >Rails教程第9课

问Rails教程第9课
EN

Stack Overflow用户

提问于 2011-04-20 20:15:06

回答 2查看 3.9K关注 0票数 0

2011年4月23日(星期六)更新

在user.rb中实现以下内容后，课程是绿色的

def authenticate_with_salt(id, cookie_salt)
  user = find_by_id(id)
  (user && user.salt == cookie_salt) ? user : nil 
end

我得到：

Failures:

  1) SessionsController POST 'create' success should sign the user in
     Failure/Error: controller.current_user.should == @user
     ArgumentError:
       wrong number of arguments (1 for 2)
     # ./app/models/user.rb:45:in `authenticate_with_salt'
     # ./app/helpers/sessions_helper.rb:36:in `user_from_remember_token'
     # ./app/helpers/sessions_helper.rb:14:in `current_user'
     # ./spec/controllers/sessions_controller_spec.rb:58:in `block (4 levels) in <top (required)>'

Finished in 0.54296 seconds
7 examples, 1 failure

我正在继续调查..。哦，joy！

编辑:完成第九课之后，我会在这里发帖--似乎我又回到了我自己找到问题的道路上，这要感谢GrahamJRoy！

2011年4月22日(星期五)更新：

我花了最后一天的时间试图找出类似的问题，但是非常失败，如果你需要更多的信息，请告诉我，这两个故障都很可能是相互关联的，所以如果我修复一个，我认为它会修复另一个。

Failures:

  1) SessionsController POST 'create' success should sign the user in
     Failure/Error: post :create, :session => @attr
     NameError:
       undefined local variable or method `clear_return_to' for #<SessionsController:0x00000101648ac8>
     # ./app/helpers/sessions_helper.rb:28:in `redirect_back_or'
     # ./app/controllers/sessions_controller.rb:16:in `create'
     # ./spec/controllers/sessions_controller_spec.rb:51:in `block (4 levels) in <top (required)>'

  2) SessionsController POST 'create' success should redirect to the user show page
     Failure/Error: post :create, :session => @attr
     NameError:
       undefined local variable or method `clear_return_to' for #<SessionsController:0x00000100ea0690>
     # ./app/helpers/sessions_helper.rb:28:in `redirect_back_or'
     # ./app/controllers/sessions_controller.rb:16:in `create'
     # ./spec/controllers/sessions_controller_spec.rb:57:in `block (4 levels) in <top (required)>'

Finished in 0.42858 seconds
7 examples, 2 failures

在会话中，helper.rb文件：

  def redirect_back_or(default)
    redirect_to(session[:return_to] || default)
    clear_return_to
  end

在sessions_controller_spec.rb文件中：

  it "should sign the user in" do
     post :create, :session => @attr
     controller.current_user.should == @user
     controller.should be_signed_in
   end

  it "should redirect to the user show page" do
     post :create, :session => @attr
     response.should redirect_to(user_path(@user))
   end


In sessions_controller.rb file:

  def create
    user = User.authenticate(params[:session][:email],
                             params[:session][:password])
    if user.nil?
      flash.now[:error] = "Invalid email/password combination."
      @title = "Sign in"
      render 'new'
    else
      sign_in user
      redirect_back_or user
    end
  end

原来的问题如下：

我目前正在学习Rails教程的第9课，在运行自动测试时会遇到以下错误：

失败：

  1) SessionsController POST 'create' success should sign the user in
     Failure/Error: post :create, :session => @attr
     NoMethodError:
       undefined method `sign_in' for #<SessionsController:0x000001017082d8>
     # ./app/controllers/sessions_controller.rb:15:in `create'
     # ./spec/controllers/sessions_controller_spec.rb:51:in `block (4 levels) in <top (required)>'

  2) SessionsController POST 'create' success should redirect to the user show page
     Failure/Error: post :create, :session => @attr
     NoMethodError:
       undefined method `sign_in' for #<SessionsController:0x00000100ecbca0>
     # ./app/controllers/sessions_controller.rb:15:in `create'
     # ./spec/controllers/sessions_controller_spec.rb:57:in `block (4 levels) in <top (required)>'

sessions_controller_spec.rb：

  it "should sign the user in" do
    post :create, :session => @attr
    controller.current_user.should == @user
    controller.should be_signed_in
  end

  it "should redirect to the user show page" do
    post :create, :session => @attr
    response.should redirect_to(user_path(@user))
  end

如果我评论上面的sessions_controller_spec.rb，我将是绿色的！这可能会帮助我朝着正确的方向前进，因为我毫无头绪！

sessions_controller.rb：

def create
    user = User.authenticate(params[:session][:email],
                             params[:session][:password])
    if user.nil?
      flash.now[:error] = "Invalid email/password combination."
      @title = "Sign in"
      render 'new'
    else
      sign_in user
      redirect_back_or user
    end
  end

sessions_helper.rb：

def sign_in(user)
  cookies.permanent.signed[:remember_token] = [user.id, user.salt]
  self.current_user = user
end

在GrahamJRoy中添加application_controller.rb中的“include SessionsHelper”

class ApplicationController < ActionController::Base
  protect_from_forgery
  include SessionsHelper
end

两个新的错误，我认为是导致我的问题：

失败：

  1) SessionsController POST 'create' success should sign the user in
     Failure/Error: post :create, :session => @attr
     NoMethodError:
       undefined method `redirect_back_or' for #<SessionsController:0x0000010405adc0>
     # ./app/controllers/sessions_controller.rb:16:in `create'
     # ./spec/controllers/sessions_controller_spec.rb:51:in `block (4 levels) in <top (required)>'

  2) SessionsController POST 'create' success should redirect to the user show page
     Failure/Error: post :create, :session => @attr
     NoMethodError:
       undefined method `redirect_back_or' for #<SessionsController:0x000001030a3c60>
     # ./app/controllers/sessions_controller.rb:16:in `create'
     # ./spec/controllers/sessions_controller_spec.rb:57:in `block (4 levels) in <top (required)>'

ruby-on-rails

回答 2

Stack Overflow用户

发布于 2011-04-20 20:28:50

根据文档，您在ApplicationController中引用了ApplicationController吗？

class ApplicationController < ActionController::Base
  protect_from_forgery
  include SessionsHelper
end

票数 5

Stack Overflow用户

发布于 2011-04-23 11:26:44

因此，我基本上回过头来，重新开始上课，并仔细地注释掉了每一页上不应该出现的代码。

上面的星期六更新让我开始检查故障显示了什么，所以我查看了其中提到的每一行，并检查了RailsTutorial git，以查看任何明显的差异。

这导致了*旁边的remember_token

User.authenticate_with_salt(*remember_token)

当添加*错误时，

Failures:

  1) SessionsController POST 'create' success should sign the user in
     Failure/Error: controller.current_user.should == @user
     ArgumentError:
       wrong number of arguments (1 for 2)
     # ./app/models/user.rb:45:in `authenticate_with_salt'
     # ./app/helpers/sessions_helper.rb:36:in `user_from_remember_token'
     # ./app/helpers/sessions_helper.rb:14:in `current_user'
     # ./spec/controllers/sessions_controller_spec.rb:58:in `block (4 levels) in <top (required)>'

Finished in 0.54296 seconds
7 examples, 1 failure

至：

Failures:

  1) SessionsController POST 'create' success should sign the user in
     Failure/Error: controller.should be_signed_in
     NoMethodError:
       undefined method `signed_in?' for #<SessionsController:0x00000104086088>
     # ./spec/controllers/sessions_controller_spec.rb:59:in `block (4 levels) in <top (required)>'

Finished in 1.73 seconds
63 examples, 1 failure

这时，我检查了我的代码：

  def signed_in
    !current_user.nil?
  end

对吉特人说：

  def signed_in?
    !current_user.nil?
  end

很方便地看到了“？”我想我会加进去看看会发生什么..。

显然我现在是绿色的..。让我们现在就完成这节课！

非常感谢GrahamJRoy的投入！

票数 0

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/5736094

复制

相似问题

问Rails教程第9课
EN

回答 2

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Rails教程第9课EN

回答 2

Stack Overflow用户

Stack Overflow用户

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Rails教程第9课
EN