如何解决Rails 6-命名空间中嵌套资源的问题
因此，我尝试将资源嵌套在命名空间下，但是当我尝试导航至UserProfile新页面时，出现以下错误：
ActionController::RoutingError at /users/xxxxxx/user_profiles/new
uninitialized constant AccountManagementPages::UserProfilesController
Did you mean? AccountManagementPages::UsersController
这是在routes.rb文件中设置资源的方式
constraints(AccountManagement) do
namespace :account_management_pages,path: '' do
root to: 'users#new',as: :registration
resources :users,except: %w[index],path_names: { new: 'register' } do
resources :user_profiles
end
end
end
我的控制器和视图的文件结构均已正确配置（至少我认为是这样）。
这就是我的视图嵌套的方式。
这是我配置user_profiles_controller的方式：
module AccountManagementPages
module Users
class UserProfilesController < ApplicationController
def show; end
def new; end
def edit; end
def create; end
def update; end
end
end
end
和我的模型关联（不要以为这在这里太相关了，只是以防万一。）
类用户 类UserProfile 这里的任何帮助将不胜感激。不确定为什么会遇到此错误？ 谢谢。
解决方法
如果您进行rails routes，您将获得（除其他外）：
Prefix Verb URI Pattern Controller#Action
account_management_pages_registration GET / account_management_pages/users#new
account_management_pages_user_user_profiles GET /users/:user_id/user_profiles(.:format) account_management_pages/user_profiles#index
POST /users/:user_id/user_profiles(.:format) account_management_pages/user_profiles#create
new_account_management_pages_user_user_profile GET /users/:user_id/user_profiles/register(.:format) account_management_pages/user_profiles#new
edit_account_management_pages_user_user_profile GET /users/:user_id/user_profiles/:id/edit(.:format) account_management_pages/user_profiles#edit
account_management_pages_user_user_profile GET /users/:user_id/user_profiles/:id(.:format) account_management_pages/user_profiles#show
PATCH /users/:user_id/user_profiles/:id(.:format) account_management_pages/user_profiles#update
PUT /users/:user_id/user_profiles/:id(.:format) account_management_pages/user_profiles#update
DELETE /users/:user_id/user_profiles/:id(.:format) account_management_pages/user_profiles#destroy
account_management_pages_users POST /users(.:format) account_management_pages/users#create
new_account_management_pages_user GET /users/register(.:format) account_management_pages/users#new
edit_account_management_pages_user GET /users/:id/edit(.:format) account_management_pages/users#edit
account_management_pages_user GET /users/:id(.:format) account_management_pages/users#show
PATCH /users/:id(.:format) account_management_pages/users#update
PUT /users/:id(.:format) account_management_pages/users#update
DELETE /users/:id(.:format) account_management_pages/users#destroy
如您所见，user_profiles没有嵌套在users名称空间下。因此，Rails期望：
module AccountManagementPages
class UserProfilesController < ApplicationController
...
end
end
如果您这样做：
constraints(AccountManagement) do
namespace :account_management_pages,path: '' do
root to: 'users#new',as: :registration
resources :users,except: %w[index],path_names: { new: 'register' } do
scope module: :users do
resources :user_profiles
end
end
end
end
...然后是rails routes，您会得到（除其他外）：
Prefix Verb URI Pattern Controller#Action
account_management_pages_registration GET / account_management_pages/users#new
account_management_pages_user_user_profiles GET /users/:user_id/user_profiles(.:format) account_management_pages/users/user_profiles#index
POST /users/:user_id/user_profiles(.:format) account_management_pages/users/user_profiles#create
new_account_management_pages_user_user_profile GET /users/:user_id/user_profiles/register(.:format) account_management_pages/users/user_profiles#new
edit_account_management_pages_user_user_profile GET /users/:user_id/user_profiles/:id/edit(.:format) account_management_pages/users/user_profiles#edit
account_management_pages_user_user_profile GET /users/:user_id/user_profiles/:id(.:format) account_management_pages/users/user_profiles#show
PATCH /users/:user_id/user_profiles/:id(.:format) account_management_pages/users/user_profiles#update
PUT /users/:user_id/user_profiles/:id(.:format) account_management_pages/users/user_profiles#update
DELETE /users/:user_id/user_profiles/:id(.:format) account_management_pages/users/user_profiles#destroy
account_management_pages_users POST /users(.:format) account_management_pages/users#create
new_account_management_pages_user GET /users/register(.:format) account_management_pages/users#new
edit_account_management_pages_user GET /users/:id/edit(.:format) account_management_pages/users#edit
account_management_pages_user GET /users/:id(.:format) account_management_pages/users#show
PATCH /users/:id(.:format) account_management_pages/users#update
PUT /users/:id(.:format) account_management_pages/users#update
DELETE /users/:id(.:format) account_management_pages/users#destroy
...和user_profiles将嵌套在users下。而且您应该可以使用：
module AccountManagementPages
module Users
class UserProfilesController < ApplicationController
...
end
end
end
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