Rails 未初始化的常量路由错误

Question

我知道这个问题是在网上贴出来的，但是看了所有的答案后，我仍然无法弄清楚我的问题是什么。

这是我的路线：

resources :applications do 
  resources :applicants do
    collection {put '/archived'}
    collection {put '/not_archived'}
  end
end

然后我在这个路径上有一个表：/applications/1/applicants，它调用我的索引方法。

在这个列出所有申请人的表格中，我为每一行设置了一个复选框，当他们选中该复选框时，我想使用 ajax 在数据库中为该行设置“存档”标志。

这是我的 ajax 调用：

$('.archive').on('click', function() {
    if ($(this).is(':checked')) {
        $.ajax({
            type: "PUT",
            url: '/applications/<%= @application.id %>/applicants/archived',
            data: {id: $(this).attr('id'), archived: true}
        });
    } else {
        $.ajax({
            type: "PUT",
            url: '/applications/<%= @application.id %>/applicants/not_archived',
            data: {id: $(this).attr('id'), archived: false}
        });
    }
});

但每次我检查一个复选框时，我都会收到此错误：

Started PUT "/applications/1/applicants/archived" for 127.0.0.1 at 2013-04-03 00:07:20 -0500

ActionController::RoutingError (uninitialized constant Applications):
  activesupport (3.2.6) lib/active_support/inflector/methods.rb:229:in `block in constantize'
  activesupport (3.2.6) lib/active_support/inflector/methods.rb:228:in `each'
  activesupport (3.2.6) lib/active_support/inflector/methods.rb:228:in `constantize'
  actionpack (3.2.6) lib/action_dispatch/routing/route_set.rb:69:in `controller_reference'
  actionpack (3.2.6) lib/action_dispatch/routing/route_set.rb:54:in `controller'
  actionpack (3.2.6) lib/action_dispatch/routing/route_set.rb:32:in `call'
  journey (1.0.4) lib/journey/router.rb:68:in `block in call'
  journey (1.0.4) lib/journey/router.rb:56:in `each'
  journey (1.0.4) lib/journey/router.rb:56:in `call'
  actionpack (3.2.6) lib/action_dispatch/routing/route_set.rb:600:in `call'
  warden (1.2.1) lib/warden/manager.rb:35:in `block in call'
  warden (1.2.1) lib/warden/manager.rb:34:in `catch'
  warden (1.2.1) lib/warden/manager.rb:34:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
  rack (1.4.1) lib/rack/etag.rb:23:in `call'
  rack (1.4.1) lib/rack/conditionalget.rb:35:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/head.rb:14:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/flash.rb:242:in `call'
  rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context'
  rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/cookies.rb:338:in `call'
  activerecord (3.2.6) lib/active_record/query_cache.rb:64:in `call'
  activerecord (3.2.6) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
  activesupport (3.2.6) lib/active_support/callbacks.rb:405:in `_run__281193607366851886__call__1094349027316042218__callbacks'
  activesupport (3.2.6) lib/active_support/callbacks.rb:405:in `__run_callback'
  activesupport (3.2.6) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
  activesupport (3.2.6) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (3.2.6) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/reloader.rb:65:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
  railties (3.2.6) lib/rails/rack/logger.rb:26:in `call_app'
  railties (3.2.6) lib/rails/rack/logger.rb:16:in `call'
  quiet_assets (1.0.1) lib/quiet_assets.rb:20:in `call_with_quiet_assets'
  actionpack (3.2.6) lib/action_dispatch/middleware/request_id.rb:22:in `call'
  rack (1.4.1) lib/rack/methodoverride.rb:21:in `call'
  rack (1.4.1) lib/rack/runtime.rb:17:in `call'
  activesupport (3.2.6) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
  rack (1.4.1) lib/rack/lock.rb:15:in `call'
  actionpack (3.2.6) lib/action_dispatch/middleware/static.rb:62:in `call'
  railties (3.2.6) lib/rails/engine.rb:479:in `call'
  railties (3.2.6) lib/rails/application.rb:220:in `call'
  rack (1.4.1) lib/rack/content_length.rb:14:in `call'
  railties (3.2.6) lib/rails/rack/log_tailer.rb:17:in `call'
  rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service'
  webrick (1.3.1) lib/webrick/httpserver.rb:138:in `service'
  webrick (1.3.1) lib/webrick/httpserver.rb:94:in `run'
  webrick (1.3.1) lib/webrick/server.rb:191:in `block in start_thread'

我的申请者控制器有这些方法：

# PUT /applicants/archived/1
  def archived
    p 'here?'
    @applicant = Applicant.find(params[:id])
    @applicant.archived = params[:archived]
    #@application = current_company.applications.find(params[:application_id])

    respond_to do |format|
      if @applicant.save
        format.js 
        #format.html { redirect_to @task, notice: 'Task was successfully updated.' }
        #format.json { head :no_content }
      else
        format.html { render action: "index" }
        format.json { render json: @applicant.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /applicants/not_archived/1
  def not_archived
    @applicant = Applicant.find(params[:id])
    @applicant.archived = params[:archived]
    #@application = current_company.applications.find(params[:application_id])

    respond_to do |format|
      if @applicant.save
        format.js
        #format.html { redirect_to @task, notice: 'Task was successfully updated.' }
        #format.json { head :no_content }
      else
        format.html { render action: "index" }
        format.json { render json: @applicant.errors, status: :unprocessable_entity }
      end
    end
  end

这是我对这些路由的 rake 路由输出：

        archived_application_applicants PUT    /applications/:application_id/applicants/archived(.:format)                            applications/:application_id/applicants#archived
    not_archived_application_applicants PUT    /applications/:application_id/applicants/not_archived(.:format)                        applications/:application_id/applicants#not_archived
                 application_applicants GET    /applications/:application_id/applicants(.:format)                                     applicants#index
                                        POST   /applications/:application_id/applicants(.:format)                                     applicants#create
              new_application_applicant GET    /applications/:application_id/applicants/new(.:format)                                 applicants#new
             edit_application_applicant GET    /applications/:application_id/applicants/:id/edit(.:format)                            applicants#edit
                  application_applicant GET    /applications/:application_id/applicants/:id(.:format)                                 applicants#show
                                        PUT    /applications/:application_id/applicants/:id(.:format)                                 applicants#update
                                        DELETE /applications/:application_id/applicants/:id(.:format)                                 applicants#destroy

是什么导致了我的错误？我完全被难住了。

Answer 1

我制作了一个复制您的上下文的演示应用程序，它对我来说很好用。你可以在这里查看：https://github.com/Chipairon/so_applicants_route

我已经清理了围绕这个问题的噪音，希望它可以作为一个起点。

我没有足够的声誉来评论你的问题，所以我会把它放在这里:)

我认为问题必须在您的app/views/applicants/archived.js.erb 中，因为您说问题发生在您选中复选框时。你能发布那个文件的内容吗？

附带说明，我希望您考虑将“存档”操作设为成员操作。您实际上是针对单个申请人执行操作，而不是针对所有申请人：

resources :applications do
  resources :applicants do
    put :archived, on: :member
    put :not_archived, on: :member
  end
end

Answer 2

我希望这段代码对你有用：

$('.archive').on('click', function() {                                                      

if ($(this).is(':checked')){
    $.ajax({
        type: "PUT",
        url: '<%= archived_application_applicants_path(@application.id) %>',
        data: {id: $(this).attr('id'), archived: true}
    });
}else {
    $.ajax({
        type: "PUT",
        url: '<%= not_archived_application_applicants_path(@application.id) %>',
        data: {id: $(this).attr('id'), archived: false}
    });
}

});

Answer 3

试试

$('.archive').on('click', function() {
    if ($(this).is(':checked')){
      $.ajax({
            type: "PUT",
            url: '<%= archived_application_applicants_path(:application_id => @application.id) %>',
            data: {id: $(this).attr('id'), archived: true}
    });
    }else {
     $.ajax({
            type: "PUT",
            url: '<%= not_archived_application_applicants_path(:application_id => @application.id) %>',
            data: {id: $(this).attr('id'), archived: true}
    });
    }

});

Answer 4

这可能与您的 javascript 无关。路由器找不到正确的模块/类集来解析将请求发送到哪个控制器。

我的猜测是您的申请者控制器的命名空间如下：

class Applications::ApplicantsController < Superclass;
end

但applicants_controller.rb 不在app/controllers/applications 中，它需要让Rails 自动创建Applications 模块。移动applicant_controller.rb 或移除命名空间，事情应该会自行修复。