更改：检查用户id的路由

config/routes/api.rb

@@ -1,11 +1,17 @@
 defaults format: :json do 
   namespace :api do 
     namespace :v1 do 
+
+      resources :users, only: [:index] do 
+        collection do 
+          post :check_user_id
+        end
+      end
+
       scope ':owner' do 
         resource :users, path: '/', only: [:update, :edit, :destroy] do 
           collection do
             get :send_email_vefify_code
-            post :check_user_id
             post :check_password 
             post :check_email
             post :check_email_verify_code