我有这个架构:varorderSchema=newmongoose.Schema({history:[{"type":{type:String,enum:['ORDER_HISTORY_DRIVER_DETAILS','ORDER_HISTORY_LOADING','ORDER_HISTORY_LOCATION','ORDER_HISTORY_UNLOADING'],required:true},date:{type:Date},state:{type:String,enum:['ORDER_HISTORY_STEP_STATE_COMPLETED','ORDER_HISTORY_ST