blocks|key|418659|text|Devise提供了after_database_authentication回调method.You，可以完全访问当前经过身份验证的用户对象。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|418660|如果您想在每次成功登录后更新当前用户名，可以执行以下操作。|418661|class+User+<+ActiveRecord::Base
++devise+:database_authenticatable

++def+after_database_authentication
++++self.update_attributes(:name+=>+"your+name+goes+here")
++end+
end|code-block|syntax|javascript|418662|entityMap^0|9|T|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

Devise provides <code>after_database_authentication</code> callback method.You have full access for the current authenticated user object over there.

If you want to update current user name after every successful login you can do that like below.

<pre><code>class User &lt; ActiveRecord::Base
 devise :database_authenticatable

 def after_database_authentication
 self.update_attributes(:name =&gt; "your name goes here")
 end 
end
</code></pre>

blocks|key|418677|text|或者，您可以创建自己的会话控制器|type|unstyled|depth|inlineStyleRanges|entityRanges|data|418678|class+SessionsController+<+Devise::SessionsController
++def+new
++++super
++end

++def+create
++++self.resource+=+warden.authenticate!(auth_options)
++++set_flash_message(:notice,+:signed_in)+if+is_navigational_format?
++++sign_in(resource_name,+resource)
++++if+!session[:return_to].blank?
++++++redirect_to+session[:return_to]
++++++session[:return_to]+=+nil
++++else
++++++respond_with+resource,+:location+=>+after_sign_in_path_for(resource)
++++end
++end
end|code-block|syntax|javascript|418679|在routes.rb中添加：|offset|length|style|CODE|418680|devise_for+:users,+controllers:+{sessions:+"sessions"}|418681|entityMap^0|0|0|1|9|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Alternatively, you can create your own sessions controller

<pre class="lang-rb prettyprint-override"><code>class SessionsController &lt; Devise::SessionsController
 def new
 super
 end

 def create
 self.resource = warden.authenticate!(auth_options)
 set_flash_message(:notice, :signed_in) if is_navigational_format?
 sign_in(resource_name, resource)
 if !session[:return_to].blank?
 redirect_to session[:return_to]
 session[:return_to] = nil
 else
 respond_with resource, :location =&gt; after_sign_in_path_for(resource)
 end
 end
end
</code></pre>

And in <code>routes.rb</code> add:

<pre class="lang-rb prettyprint-override"><code>devise_for :users, controllers: {sessions: "sessions"}
</code></pre>

blocks|key|200454|text|如果你看一下sessions_controller#create的Devise's+implementation，你会注意到如果你传递一个块，它们就会让步。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|200455|所以，只要将它们的会话控制器子类化，并在调用super时传递一个块。为此，首先在routes.rb中告诉Devise，您希望使用自己的会话控制器：|200456|devise_for+:users,+controllers:+{+sessions:+'users/sessions'+}|code-block|syntax|javascript|200457|然后创建一个SessionsController类，并在create方法中调用Super时传递一个块。它看起来像这样：|200458|#+app/controllers/users/sessions_controller.rb

class+Users::SessionsController+<+Devise::SessionsController
++layout+"application"
++
++#+POST+/login
++def+create
++++super+do+%7Cuser%7C
++++++if+user.persisted?
++++++++user.update(foo:+:bar)
++++++end
++++end
++end
end|200459|大多数设计控制器方法都接受一个块，所以你也可以这样做来注册，忘记密码，等等。|200460|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/plataformatec/devise/blob/aa3f64976fd886b25e40dfc6043aa7b151145f94/app/controllers/devise/sessions_controller.rb#L20^0|6|Q|X|N|0|0|14|9|0|0|6|I|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|F|3|G|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|19|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|1D|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1E|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

If you look at <a href="https://github.com/plataformatec/devise/blob/aa3f64976fd886b25e40dfc6043aa7b151145f94/app/controllers/devise/sessions_controller.rb#L20" rel="nofollow noreferrer">Devise's implementation</a> of <code>sessions_controller#create</code>, you'll notice that they yield if you pass a block.
So, just subclass their sessions controllers and pass a block when you call super. To do that, first tell Devise in <code>routes.rb</code> that you'd like to use your own sessions controller:
<pre><code>devise_for :users, controllers: { sessions: 'users/sessions' }
</code></pre>
And then create a <code>SessionsController</code> class and pass a block when you call super in your create method. It would look something like this:
<pre><code># app/controllers/users/sessions_controller.rb

class Users::SessionsController &lt; Devise::SessionsController
 layout &quot;application&quot;
 
 # POST /login
 def create
 super do |user|
 if user.persisted?
 user.update(foo: :bar)
 end
 end
 end
end
</code></pre>
Most of the Devise controller methods accept a block, so you could do this for registration, forgot password, etc as well.

Using Devise to manage users sessions / registrations I would need to perform specific tasks (updating some fields in the users table for this specific user for example) each time a user signs in, and before he gets redirected by devise to the home page for connected users.

Do I have to override devise SessionsController, and if yes, how?

Rails - How to override devise SessionsController to perform specific tasks when user signs in?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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使用Devise管理用户会话/注册时，我需要在每次用户登录时执行特定的任务(例如，为该特定用户更新users表中的一些字段)，并且在devise将他重定向到连接用户的主页之前。我必须重写devise SessionsController吗?如果是，如何重写？

问Rails -如何覆盖devise SessionsController以在用户登录时执行特定任务？
EN

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问Rails -如何覆盖devise SessionsController以在用户登录时执行特定任务？EN