feat(park):修改园区信息功能已经完成。

repository/park.go

@@ -1,6 +1,7 @@
 package repository
 
 import (
+	"electricity_bill_calc/exceptions"
 	"electricity_bill_calc/global"
 	"electricity_bill_calc/model"
 
@@ -22,3 +23,15 @@ func (_ParkRepository) ListAllParkBelongsTo(uid string) ([]model.Park, error) {
 	}
 	return parks, nil
 }
+
+func (_ParkRepository) FetchParkDetail(pid string) (*model.Park, error) {
+	var park = &model.Park{}
+	has, err := global.DBConn.ID(pid).NoAutoCondition().Get(park)
+	if err != nil {
+		return nil, err
+	}
+	if !has {
+		return nil, exceptions.NewNotFoundError("未找到符合条件的园区记录。")
+	}
+	return park, nil
+}