定义病猪用药两个repo

internal/infra/models/pig_sick.go

@@ -27,20 +27,22 @@ const (
 	SickPigReasonTypeOther       PigBatchSickPigReasonType = "其他" // 其他原因
 )
 
-// PigBatchSickPigLog 记录了猪批次中病猪数量的变化日志
-type PigBatchSickPigLog struct {
+// PigSickLog 记录了猪批次中病猪数量的变化日志
+type PigSickLog struct {
 	gorm.Model
 	PigBatchID        uint                             `gorm:"primaryKey;comment:关联的猪批次ID"`
 	PenID             uint                             `gorm:"not null;index;comment:所在猪圈ID"`
 	PigIDs            string                           `gorm:"size:500;comment:涉及的猪只ID列表，逗号分隔"`
 	ChangeCount       int                              `gorm:"not null;comment:变化数量, 正数表示新增, 负数表示移除"`
 	Reason            PigBatchSickPigReasonType        `gorm:"size:20;not null;comment:变化原因 (如: 患病, 康复, 死亡, 转入, 转出, 其他)"`
+	BeforeCount       int                              `gorm:"comment:变化前的数量"`
+	AfterCount        int                              `gorm:"comment:变化后的数量"`
 	Remarks           string                           `gorm:"size:255;comment:备注"`
 	TreatmentLocation PigBatchSickPigTreatmentLocation `gorm:"size:50;comment:治疗地点"`
 	OperatorID        uint                             `gorm:"comment:操作员ID"`
 	HappenedAt        time.Time                        `gorm:"primaryKey;comment:事件发生时间"`
 }
 
-func (PigBatchSickPigLog) TableName() string {
-	return "pig_batch_sick_pig_logs"
+func (PigSickLog) TableName() string {
+	return "pig_sick_logs"
 }