ruby-on-rails - 如何让 url_for 与模块一起工作？

Question

我在我的 routes.rb 中安装了 FullcalendarEngine:

mount FullcalendarEngine::Engine , at: "/fullcalendar_engine"

不幸的是，即使我在 routes.rb 中有这个:

resources :events,  module: 'fullcalendar_engine'

以及生成的路由:

fullcalendar_engine_path                    /fullcalendar_engine        FullcalendarEngine::Engine
events_path                     GET         /events/index(.:format)     fullcalendar_engine/events#index
event_path                      GET         /events/:id(.:format)       fullcalendar_engine/events#show
events_path                     GET         /events(.:format)           fullcalendar_engine/events#index
                                POST        /events(.:format)           fullcalendar_engine/events#create
new_event_path                  GET         /events/new(.:format)       fullcalendar_engine/events#new
edit_event_path                 GET         /events/:id/edit(.:format)  fullcalendar_engine/events#edit
event_path                      GET         /events/:id(.:format)       fullcalendar_engine/events#show
                                PATCH       /events/:id(.:format)       fullcalendar_engine/events#update
                                PUT         /events/:id(.:format)       fullcalendar_engine/events#update
                                DELETE      /events/:id(.:format)       fullcalendar_engine/events#destroy

我仍然不能对它使用 url_for(我需要这样做才能让它与 will_paginate 一起使用):

错误:

RailsDevise::Application.routes.url_for({ controller: 'events', action: 'index'})
=> ActionController::UrlGenerationError: No route matches {:action=>"index", :controller=>"events"}
FullcalendarEngine::Engine.routes.url_for({ controller: 'events', action: 'index'})
=> ActionController::UrlGenerationError: No route matches {:action=>"index", :controller=>"events"}

当我检查模块的路由时:

FullcalendarEngine::Engine.routes.routes.collect {|journey| journey.defaults }
 => [{:controller=>"fullcalendar_engine/events", :action=>"index"}, {:action=>"get_events", :controller=>"fullcalendar_engine/events"}, {:action=>"move", :controller=>"fullcalendar_engine/events"}, {:action=>"resize", :controller=>"fullcalendar_engine/events"}, {:action=>"index", :controller=>"fullcalendar_engine/events"}, {:action=>"create", :controller=>"fullcalendar_engine/events"}, {:action=>"new", :controller=>"fullcalendar_engine/events"}, {:action=>"edit", :controller=>"fullcalendar_engine/events"}, {:action=>"show", :controller=>"fullcalendar_engine/events"}, {:action=>"update", :controller=>"fullcalendar_engine/events"}, {:action=>"update", :controller=>"fullcalendar_engine/events"}, {:action=>"destroy", :controller=>"fullcalendar_engine/events"}] 

注意它有这个:

@defaults={:controller=>"fullcalendar_engine/events", :action=>"index"}

注意 Controller 值的命名空间。这不起作用:

FullcalendarEngine::Engine.routes.url_for({:controller=>"events", :action=>"index"})
=> ActionController::UrlGenerationError: No route matches {:action=>"index", :controller=>"events"}

但是如果我尝试给它命名空间，它会给出这个错误:

FullcalendarEngine::Engine.routes.url_for({:controller=>"fullcalendar_engine/events", :action=>"index"})
ArgumentError: Missing host to link to! Please provide the :host parameter, set default_url_options[:host], or set :only_path to true

即使添加主机也会生成错误的 url:

FullcalendarEngine::Engine.routes.url_for({:controller=>"fullcalendar_engine/events", :action=>"index", host: "localhost"})
 => "http://localhost/fullcalendar_engine/" 

如何让 url_for 识别路线？

Answer 1

你的路由需要一个 id 参数，所以你需要给它一个:

url_for(controller: 'events', action: 'show', id: 5)   # < Notice the `id`

此外，您发布的路由不包含index 的路由，因此它可能不存在。如果是这样，它可能不需要 id