rails用户登出时候错误

ihaohang 2013-06-01 07:02:36

当用户没有登录时候，header里显示登录注册。当用户登录后，显示个人主页和登出。
再点了登出之后，可以安全退出账号，并删除cookies。
下面是错误信息

ArgumentError in Pages#home

Showing C:/Users/Kouunn/Desktop/nihong/app/views/layouts/_header.html.erb where line #29 raised:

wrong number of arguments (0 for 2)

Extracted source (around line #29):

26: <div class="miui_logo">
27: <%= link_to image_tag('images/logo.png'),home_path %>
28: </div>
29: <% if signed_in? %>
30: <p class="language">
31: <%= link_to "个人主页",current_user %>
32: <span>|</span>

Trace of template inclusion: app/views/layouts/application.html.erb

Rails.root: C:/Users/Kouunn/Desktop/nihong
Application Trace | Framework Trace | Full Trace

app/models/user.rb:36:in `authenticate_with_salt'
app/helpers/sessions_helper.rb:29:in `user_from_remember_token'
app/helpers/sessions_helper.rb:13:in `current_user'
app/helpers/sessions_helper.rb:17:in `signed_in?'
app/views/layouts/_header.html.erb:29:in `_app_views_layouts__header_html_erb___199233694_31528296'
app/views/layouts/application.html.erb:22:in `_app_views_layouts_application_html_erb___776862230_31346676'

Request

Parameters:

None

Show session dump

Show env dump
Response

Headers:

None

----------------------------------------------------------------------------------------------
header.html.erb的代码

            

<div class="miui_logo">

	      <%= link_to image_tag('images/logo.png'),home_path %> 

	    </div>

<% if signed_in? %>

	<p class="language">

	     <%= link_to "个人主页",current_user %> 

	     <span>|</span> 

	     <%= link_to "登出",signout_path %>

	      <span>|</span> 

	</p>



<% else %>



	<p class="language">

	     <%= link_to "登录",login_path %> 

	     <span>|</span> 

	     <%= link_to "注册",signup_path %>

	    

	</p>

<%end%>

    </div>

----------------------------------------------------------------------------------------------
signed_in?定义在SessionsHelper里，代码如下



module SessionsHelper

  

  def sign_in(user)

    cookies.permanent.signed[:remember_token] = [user.id,user.salt]

    current_user = user

  end

  

  def current_user(user)

    @current_user = user

  end



  def current_user

    @current_user ||= user_from_remember_token

  end

  

  def signed_in?

    !current_user.nil?

  end



  def sign_out

    cookies.delete(:remember_token)

    current_user = nil

    #self.current_user = nil

  end



  private

  

     def user_from_remember_token

       User.authenticate_with_salt(*remember_token)

     end



     def remember_token

       

       cookies.signed[:remember_token || [nil , nil]]

     end

end