设计用户sign_in给出CSRF令牌真实性令牌的认证错误

我正在使用 devise （最新版本 - 3.2.0）与 rails （最新版本 - 4.0.1 ）

I am using devise (latest version - 3.2.0) with rails (latest version - 4.0.1)

我正在进行简单的身份验证（没有ajax或api），并获得CSRF真实性令牌的错误。在2013年以前检查POST请求

I'm doing simple authentication (without ajax or api) and getting an error for CSRF authenticity token. Check the POST request below

started POST "/users/sign_in" for 127.0.0.1 at 2013-11-08 19:48:49 +0530
Processing by Devise::SessionsController#create as HTML

 Parameters: {"utf8"=>"✓",    
 "authenticity_token"=>"SJnGhXXUXjncnPhCdg3muV2GYCA8CX2LVFV78pqddD4=", "user"=> 
{"email"=>"a@a.com", "password"=>"[FILTERED]", "remember_me"=>"0"},
"commit"=>"Sign in"}

Can't verify CSRF token authenticity
 User Load (0.4ms)  SELECT "users".* FROM "users" WHERE "users"."email" =  
'a@a.com' LIMIT 1
(0.1ms)  begin transaction
SQL (0.4ms)  UPDATE "users" SET "last_sign_in_at" = ?, "current_sign_in_at" = ?,
"sign_in_count" = ?, "updated_at" = ? WHERE "users"."id" = 2  [["last_sign_in_at", Fri,
08 Nov 2013 14:13:56 UTC +00:00], ["current_sign_in_at", Fri, 08 Nov 2013 14:18:49 UTC
+00:00], ["sign_in_count", 3], ["updated_at", Fri, 08 Nov 2013 14:18:49 UTC +00:00]]
(143.6ms)  commit transaction
Redirected to http://localhost:3000/
Completed 302 Found in 239ms (ActiveRecord: 144.5ms | Search: 0.0ms)

根网址指向 home＃new ，就像

class HomeController < ApplicationController
   before_action :authenticate_user!
   def index
   end
end

Sign_in页面生成的html视图就像：

Sign_in page generated html view is like:

• 元标记

• meta tags

<meta content="authenticity_token" name="csrf-param" />
<meta content="aV+d7Z55XBJF2VtyL8V3zupR3OwhaQ6UHNtlQLBQf5Y=" name="csrf-token" />

<form accept-charset="UTF-8" action="/users/sign_in" class="new_user" id="new_user" 
method="post">
<div style="margin:0;padding:0;display:inline">
<input name="utf8" type="hidden" value="&#x2713;" />
<input name="authenticity_token" type="hidden
value="aV+d7Z55XBJF2VtyL8V3zupR3OwhaQ6UHNtlQLBQf5Y=" />
</div>
<div><label for="user_email">Email</label><br />
<input autofocus="autofocus" id="user_email" name="user[email]" type="email" value="" />
</div>

<div><label for="user_password">Password</label><br />
<input id="user_password" name="user[password]" type="password" /></div>

<div><input name="user[remember_me]" type="hidden" value="0" />
<input id="user_remember_me" name="user[remember_me]" type="checkbox" value="1" /> 
<label for="user_remember_me">Remember me</label></div>

<div><input name="commit" type="submit" value="Sign in" /></div>
</form>

认证请求甚至更新了 last_sign_in_a t 和 sign_in_count 值，但是当我尝试访问控制器中的 current_user 时，它会 nil 。

The authentication request even updates the last_sign_in_at and sign_in_count values, but when I try to access current_user in controller it comes as nil.

根据我的说法，实际上并没有登录 user 。但是问题来了为什么在用户$ c>中更新 last_sign_in_at / sign_in_count code> table？

According to me it is not actually signing in user. But then question comes "why it is updating last_sign_in_at/sign_in_count value in the user table ?"