如何使用ajax从javascript调用控制器函数

您好，我正在尝试调用一个函数，当我点击一个按钮时，作为一个操作的结果，我从javascript在我的控制器上编写了这个函数

我遵循了这一点，但它根本不起作用。当我点击按钮时，我得到下面列出的错误：

Started GET "/projects/:id/repository/:branch" for 127.0.0.1 at 2013-11-29 15:03:43 -0200
Processing by RepositoriesController#show as */*
  Parameters: {"id"=>":id", "repository_id"=>":branch"}
  ←[1m←[35m (0.0ms)←[0m  SELECT MAX(`settings`.`updated_on`) AS max_id FROM `settings`
  ←[1m←[36mUser Load (0.0ms)←[0m  ←[1mSELECT `users`.* FROM `users` WHERE `users`.`type` IN ('User', 'AnonymousUser') AND `users`.`status` = 1 AND `users`.`
id` = 10 LIMIT 1←[0m
  Current user: guilherme.noronha (id=10)
  ←[1m←[35mProject Load (1.0ms)←[0m  SELECT `projects`.* FROM `projects` WHERE `projects`.`identifier` = ':id' LIMIT 1
  Rendered common/error.html.erb (1.0ms)
Filter chain halted as :find_project_repository rendered or redirected
Completed 404 Not Found in 24ms (Views: 21.0ms | ActiveRecord: 1.0ms)

我不太明白为什么会出现这个错误，所以我来这里寻求帮助

吼叫我的代码以尝试检测某些错误或缺少某些内容：

_查看\u按钮\u release.html.erb

<script>
    function CallExec(rep) {
      $.ajax("/projects/:id/repository/:branch");
    }
</script>

<div class="contextual">
<% if User.current.allowed_to?(:exec, @project) %>
    <%= button_to_function l(:gerar_build_project), 'CallExec("'+params[:repository_id].to_s+'")' %>
|
<% end %>
</div>

client.rb（hook）

有什么建议吗

更新：

新日志

Started GET "/projects/b1309/repository/b1309i11/" for 127.0.0.1 at 2013-12-02 10:38:00 -0200
Processing by RepositoriesController#show as */*
  Parameters: {"id"=>"b1309", "repository_id"=>"b1309i11"}
  ←[1m←[35m (0.0ms)←[0m  SELECT MAX(`settings`.`updated_on`) AS max_id FROM `settings`
  ←[1m←[36mUser Load (0.0ms)←[0m  ←[1mSELECT `users`.* FROM `users` WHERE `users`.`type` IN ('User', 'AnonymousUser') AND `users`.`status` = 1 AND `users`.`
id` = 10 LIMIT 1←[0m
  Current user: guilherme.noronha (id=10)

第一。在js代码中

$.ajax("/projects/:id/repository/:branch");

您需要插入而不是

：id

项目标识符，而不是

：branch

分支id或分支名称（我不知道控制器需要什么）

---

第二。您需要正确地传递参数，因为我没有在日志中看到任何参数。我看到的参数取自url

参数：{“id”=>“：id”，“repository\u id”=>“：branch”}

。如何通过ajax传递参数，你可以通过谷歌搜索。例如，您可以查看并查找。

我已按照您的建议更改了约会，但也不起作用。尽管错误已经消失，但在我按下按钮后，该函数仍然未调用。我更新了问题，将新日志放在问题的底部。看起来一切正常。您的ajax请求调用

RepositoriesController#show

您应该在操作

{“id”=>“b1309”，“repository\u id”=>“b1309i11”}

中获得此参数。现在您可以在这里编写逻辑并返回

js.erb

例如，为什么ajax请求调用RepositoriesController#show？有没有办法调用我为这个按钮编写的函数exec_函数？我想是因为您的

CallExec

js函数调用

$.ajax（“/projects/:id/repository/:branch”）
Started GET "/projects/b1309/repository/b1309i11/" for 127.0.0.1 at 2013-12-02 10:38:00 -0200
Processing by RepositoriesController#show as */*
  Parameters: {"id"=>"b1309", "repository_id"=>"b1309i11"}
  ←[1m←[35m (0.0ms)←[0m  SELECT MAX(`settings`.`updated_on`) AS max_id FROM `settings`
  ←[1m←[36mUser Load (0.0ms)←[0m  ←[1mSELECT `users`.* FROM `users` WHERE `users`.`type` IN ('User', 'AnonymousUser') AND `users`.`status` = 1 AND `users`.`
id` = 10 LIMIT 1←[0m
  Current user: guilherme.noronha (id=10)

$.ajax("/projects/:id/repository/:branch");