JSON转换放在内置函数里

internal/app/service/audit/service.go

@@ -2,14 +2,12 @@
 package audit
 
 import (
-	"encoding/json"
 	"time"
 
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
 	"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
 	"github.com/gin-gonic/gin"
-	"gorm.io/datatypes"
 )
 
 const (
@@ -49,24 +47,12 @@ func (s *service) LogAction(c *gin.Context, actionType, description string, targ
 		return
 	}
 
-	// 将 targetResource 转换为 JSONB，如果失败则记录错误但继续
-	var targetResourceJSON datatypes.JSON
-	if targetResource != nil {
-		bytes, err := json.Marshal(targetResource)
-		if err != nil {
-			s.logger.Errorw("无法记录审计日志：序列化 targetResource 失败", "error", err)
-		} else {
-			targetResourceJSON = bytes
-		}
-	}
-
 	log := &models.UserActionLog{
 		Time:          time.Now(),
 		UserID:        user.ID,
 		Username:      user.Username, // 用户名快照
 		SourceIP:      c.ClientIP(),
 		ActionType:    actionType,
-		TargetResource: targetResourceJSON,
 		Description:   description,
 		Status:        status,
 		HTTPPath:      c.Request.URL.Path,
@@ -74,6 +60,12 @@ func (s *service) LogAction(c *gin.Context, actionType, description string, targ
 		ResultDetails: resultDetails,
 	}
 
+	// 使用模型提供的方法来设置 TargetResource
+	if err := log.SetTargetResource(targetResource); err != nil {
+		s.logger.Errorw("无法记录审计日志：序列化 targetResource 失败", "error", err)
+		// 即使序列化失败，我们可能仍然希望记录操作本身，所以不在此处 return
+	}
+
 	// 异步写入数据库，不阻塞当前请求
 	go func() {
 		if err := s.userActionLogRepository.Create(log); err != nil {

internal/infra/models/execution.go

@@ -1,6 +1,8 @@
 package models
 
 import (
+	"encoding/json"
+	"errors"
 	"time"
 
 	"gorm.io/datatypes"
@@ -170,3 +172,26 @@ type UserActionLog struct {
 func (UserActionLog) TableName() string {
 	return "user_action_logs"
 }
+
+// ParseTargetResource 解析 JSON 属性到一个具体的结构体中。
+// 调用方需要传入一个指向目标结构体实例的指针。
+func (l *UserActionLog) ParseTargetResource(v interface{}) error {
+	if l.TargetResource == nil {
+		return errors.New("目标资源为空，无法解析")
+	}
+	return json.Unmarshal(l.TargetResource, v)
+}
+
+// SetTargetResource 将任意结构体序列化为 JSON 并设置到 TargetResource 字段
+func (l *UserActionLog) SetTargetResource(data interface{}) error {
+	if data == nil {
+		l.TargetResource = nil
+		return nil
+	}
+	bytes, err := json.Marshal(data)
+	if err != nil {
+		return err
+	}
+	l.TargetResource = bytes
+	return nil
+}