问题描述
我的Rails 4应用程序遇到一些异常行为。每当我单击视图内的link_to时，我的控制器动作都会被调用两次。例如：
I'm experiencing some unusual behaviour with my Rails 4 Application. Every single-time I click on a link_to inside my views, my controllers actions are being called twice. For example:
在我的 root_url 中，我对 users_profile ：
<%= link_to('User Profile', users_profile_path, :class => "logout-button") %>
当我单击此链接时，控制台显示以下输出：
When I click this link, my console shows the following output:
Started GET "/users/profile" for 127.0.0.1 at 2013-11-25 20:45:53 -0200
Processing by Users::SessionsController#profile as HTML
User Load (0.7ms) SELECT "users".* FROM "users" WHERE "users"."id" = 45 ORDER BY "users"."id" ASC LIMIT 1
InvestorProfile Load (0.5ms) SELECT "investor_profiles".* FROM "investor_profiles" WHERE "investor_profiles"."user_id" = $1 ORDER BY "investor_profiles"."id" ASC LIMIT 1 [["user_id", 45]]
EmployeeProfile Load (0.5ms) SELECT "employee_profiles".* FROM "employee_profiles" WHERE "employee_profiles"."user_id" = $1 ORDER BY "employee_profiles"."id" ASC LIMIT 1 [["user_id", 45]]
Rendered users/sessions/_investor_setup.html.erb (3.9ms)
Rendered users/sessions/profile.html.erb within layouts/application (5.2ms)
Completed 200 OK in 19ms (Views: 11.2ms | ActiveRecord: 2.5ms)
Started GET "/users/profile" for 127.0.0.1 at 2013-11-25 20:45:53 -0200
Processing by Users::SessionsController#profile as HTML
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = 45 ORDER BY "users"."id" ASC LIMIT 1
InvestorProfile Load (0.3ms) SELECT "investor_profiles".* FROM "investor_profiles" WHERE "investor_profiles"."user_id" = $1 ORDER BY "investor_profiles"."id" ASC LIMIT 1 [["user_id", 45]]
EmployeeProfile Load (0.2ms) SELECT "employee_profiles".* FROM "employee_profiles" WHERE "employee_profiles"."user_id" = $1 ORDER BY "employee_profiles"."id" ASC LIMIT 1 [["user_id", 45]]
Rendered users/sessions/_investor_setup.html.erb (3.3ms)
Rendered users/sessions/profile.html.erb within layouts/application (4.1ms)
Completed 200 OK in 12ms (Views: 7.5ms | ActiveRecord: 1.2ms)
当有远程用户（例如JS）调用方法，但这不是我的情况。最奇怪的部分是，如果我将直接URL放在浏览器上的 users_profile_path 上。我在Rails控制台上只收到一个请求：
People often have this behaviour when there's a remote (JS for example) calling the method, but this is not my case. the weirdest part is that, if I put the direct URL to the users_profile_path on my browser. I only get one request on my rails console:
Started GET "/users/profile" for 127.0.0.1 at 2013-11-25 20:48:17 -0200
Processing by Users::SessionsController#profile as HTML
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = 45 ORDER BY "users"."id" ASC LIMIT 1
InvestorProfile Load (0.3ms) SELECT "investor_profiles".* FROM "investor_profiles" WHERE "investor_profiles"."user_id" = $1 ORDER BY "investor_profiles"."id" ASC LIMIT 1 [["user_id", 45]]
EmployeeProfile Load (0.2ms) SELECT "employee_profiles".* FROM "employee_profiles" WHERE "employee_profiles"."user_id" = $1 ORDER BY "employee_profiles"."id" ASC LIMIT 1 [["user_id", 45]]
Rendered users/sessions/_investor_setup.html.erb (3.4ms)
Rendered users/sessions/profile.html.erb within layouts/application (4.2ms)
Completed 200 OK in 12ms (Views: 7.7ms | ActiveRecord: 1.1ms)
每l我得到相同的结果
推荐答案
如果您希望您的应用仍然使用Turbolink，则 选择退出Turbolink 是解决之道；只需添加 data-no-turbolink 。
If you would like your app to still make use of Turbolinks then "Opting out of Turbolinks" on the code that is giving you problems is the way to go; just add data-no-turbolink.
我在使用Bootstrap 3时遇到了问题，并对其进行了修复。例如；
I was having problems with using Bootstrap 3 and adding that fixed it. For example;
<li class="list-group-item" data-no-turbolink>
<%= link_to download_path(item) do %>
<button type="button" class="btn btn-success">Download</button>
<% end %>
</li>
这篇关于我的rails 4应用程序上的每个link_to被调用两次的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！