feat: 实现统一日志系统和维护模式功能

backend/models/Device.js

@@ -118,7 +118,7 @@ const Device = sequelize.define(
   }
 );
 
-Device.belongsTo(Rack, { foreignKey: 'rackId' });
-Device.belongsTo(Warehouse, { foreignKey: 'warehouseId' });
+Device.belongsTo(Rack, { foreignKey: 'rackId', onDelete: 'SET NULL' });
+Device.belongsTo(Warehouse, { foreignKey: 'warehouseId', onDelete: 'SET NULL' });
 
 module.exports = Device;

backend/models/Rack.js

@@ -57,7 +57,7 @@ const Rack = sequelize.define(
 );
 
 // 关联关系
-Rack.belongsTo(Room, { foreignKey: 'roomId' });
-Room.hasMany(Rack, { foreignKey: 'roomId' });
+Rack.belongsTo(Room, { foreignKey: 'roomId', onDelete: 'CASCADE' });
+Room.hasMany(Rack, { foreignKey: 'roomId', onDelete: 'CASCADE' });
 
 module.exports = Rack;

backend/models/Ticket.js

@@ -65,7 +65,7 @@ const Ticket = sequelize.define(
     },
     reporterId: {
       type: DataTypes.STRING,
-      allowNull: false,
+      allowNull: true,
       comment: '报修人ID',
     },
     reporterName: {
@@ -139,8 +139,8 @@ const Ticket = sequelize.define(
   }
 );
 
-Ticket.belongsTo(User, { foreignKey: 'reporterId', as: 'reporter', constraints: false });
-Ticket.belongsTo(User, { foreignKey: 'assigneeId', as: 'assignee', constraints: false });
-Ticket.belongsTo(Device, { foreignKey: 'deviceId', constraints: false });
+Ticket.belongsTo(User, { foreignKey: 'reporterId', as: 'reporter', onDelete: 'SET NULL' });
+Ticket.belongsTo(User, { foreignKey: 'assigneeId', as: 'assignee', onDelete: 'SET NULL' });
+Ticket.belongsTo(Device, { foreignKey: 'deviceId', onDelete: 'SET NULL' });
 
 module.exports = Ticket;