创建设备的时候按照 user_id 和 client_id 删除已有记录

app/controllers/user_devices_controller.rb

@@ -12,6 +12,7 @@ class UserDevicesController < ApplicationController
     user_id = _user_device_params[:user_id]
     
     UserDevice.where(user_id: user_id).delete_all
+    UserDevice.where(client_id: _user_device_params[:client_id]).delete_all
 
     user_device = UserDevice.create!(_user_device_params)