定义model

internal/infra/models/feed.go

@@ -25,7 +25,7 @@ func (RawMaterial) TableName() string {
 
 // RawMaterialPurchase 记录了原料的每一次采购。
 type RawMaterialPurchase struct {
-	ID            uint        `gorm:"primaryKey"`
+	gorm.Model
 	RawMaterialID uint        `gorm:"not null;index;comment:关联的原料ID"`
 	RawMaterial   RawMaterial `gorm:"foreignKey:RawMaterialID"`
 	Supplier      string      `gorm:"size:100;comment:供应商"`
@@ -34,8 +34,6 @@ type RawMaterialPurchase struct {
 	TotalPrice    float64     `gorm:"comment:总价"`
 	PurchaseDate  time.Time   `gorm:"primaryKey;comment:采购日期"`
 	CreatedAt     time.Time
-	UpdatedAt     time.Time
-	DeletedAt     gorm.DeletedAt `gorm:"index"`
 }
 
 func (RawMaterialPurchase) TableName() string {
@@ -56,16 +54,13 @@ const (
 
 // RawMaterialStockLog 记录了原料库存的所有变动，提供了完整的追溯链。
 type RawMaterialStockLog struct {
-	ID            uint               `gorm:"primaryKey"`
+	gorm.Model
 	RawMaterialID uint               `gorm:"not null;index;comment:关联的原料ID"`
 	ChangeAmount  float64            `gorm:"not null;comment:变动数量, 正数为入库, 负数为出库"`
 	SourceType    StockLogSourceType `gorm:"size:50;not null;index;comment:库存变动来源类型"`
 	SourceID      uint               `gorm:"not null;index;comment:来源记录的ID (如 RawMaterialPurchase.ID 或 FeedUsageRecord.ID)"`
 	HappenedAt    time.Time          `gorm:"primaryKey;comment:业务发生时间"`
 	Remarks       string             `gorm:"comment:备注, 如主动领取的理由等"`
-	CreatedAt     time.Time
-	UpdatedAt     time.Time
-	DeletedAt     gorm.DeletedAt `gorm:"index"`
 }
 
 func (RawMaterialStockLog) TableName() string {
@@ -102,7 +97,7 @@ func (FeedFormulaComponent) TableName() string {
 // 应用层逻辑：当一条使用记录被创建时，应根据其使用的 FeedFormula,
 // 计算出每种 RawMaterial 的消耗量，并在 RawMaterialStockLog 中创建对应的出库记录。
 type FeedUsageRecord struct {
-	ID            uint        `gorm:"primaryKey"`
+	gorm.Model
 	PenID         uint        `gorm:"not null;index;comment:关联的猪栏ID"`
 	Pen           Pen         `gorm:"foreignKey:PenID"`
 	FeedFormulaID uint        `gorm:"not null;index;comment:使用的饲料配方ID"`
@@ -111,9 +106,6 @@ type FeedUsageRecord struct {
 	RecordedAt    time.Time   `gorm:"primaryKey;comment:记录时间"`
 	OperatorID    uint        `gorm:"not null;comment:操作员"`
 	Remarks       string      `gorm:"comment:备注, 如 '例行喂料, 弱猪补料' 等"`
-	CreatedAt     time.Time
-	UpdatedAt     time.Time
-	DeletedAt     gorm.DeletedAt `gorm:"index"`
 }
 
 func (FeedUsageRecord) TableName() string {

internal/infra/models/medication.go

@@ -82,7 +82,7 @@ const (
 
 // GroupMedicationLog 记录了对整个猪批次的用药情况
 type GroupMedicationLog struct {
-	ID           uint                 `gorm:"primaryKey"`
+	gorm.Model
 	PigBatchID   uint                 `gorm:"not null;index;comment:关联的猪批次ID"`
 	MedicationID uint                 `gorm:"not null;index;comment:关联的药品ID"`
 	Medication   Medication           `gorm:"foreignKey:MedicationID"` // 预加载药品信息
@@ -92,9 +92,6 @@ type GroupMedicationLog struct {
 	Description  string               `gorm:"size:255;comment:具体描述,如'治疗呼吸道病'"`
 	Operator     string               `gorm:"size:50;comment:操作员"`
 	HappenedAt   time.Time            `gorm:"primaryKey;comment:用药时间"`
-	CreatedAt    time.Time
-	UpdatedAt    time.Time
-	DeletedAt    gorm.DeletedAt `gorm:"index"`
 }
 
 func (GroupMedicationLog) TableName() string {

internal/infra/models/models.go

@@ -39,6 +39,8 @@ func GetAllModels() []interface{} {
 		// Pig & Batch Models
 		&PigBatch{},
 		&PigBatchLog{},
+		&WeighingBatch{},
+		&WeighingRecord{},
 
 		// Feed Models
 		&RawMaterial{},

internal/infra/models/pig.go

@@ -39,7 +39,6 @@ type PigBatch struct {
 	InitialCount     int                `gorm:"not null;comment:初始数量"`
 	CurrentCount     int                `gorm:"not null;comment:当前存栏数量"`
 	CurrentSickCount int                `gorm:"not null;default:0;comment:当前病猪数量"`
-	AverageWeight    float64            `gorm:"comment:平均体重 (kg)"`
 	Status           PigBatchStatus     `gorm:"size:20;not null;index;comment:批次状态"`
 	Pens             []Pen              `gorm:"foreignKey:PigBatchID;comment:所在圈舍ID"`
 }
@@ -64,7 +63,7 @@ const (
 
 // PigBatchLog 记录了猪批次数量或状态的每一次变更
 type PigBatchLog struct {
-	ID              uint          `gorm:"primaryKey"`
+	gorm.Model
 	PigBatchID      uint          `gorm:"not null;index;comment:关联的猪批次ID"`
 	ChangeType      LogChangeType `gorm:"size:20;not null;comment:变更类型"`
 	ChangeCount     int           `gorm:"not null;comment:数量变化,负数表示减少"`
@@ -75,11 +74,35 @@ type PigBatchLog struct {
 	AfterSickCount  int           `gorm:"not null;comment:变更后病猪数"`
 	Operator        string        `gorm:"size:50;comment:操作员"`
 	HappenedAt      time.Time     `gorm:"primaryKey;comment:事件发生时间"`
-	CreatedAt       time.Time
-	UpdatedAt       time.Time
-	DeletedAt       gorm.DeletedAt `gorm:"index"`
 }
 
 func (PigBatchLog) TableName() string {
 	return "pig_batch_logs"
 }
+
+// WeighingBatch 记录了一次批次称重的信息
+type WeighingBatch struct {
+	gorm.Model
+	WeighingTime time.Time `gorm:"primaryKey;comment:称重时间"`
+	Description  string    `gorm:"size:255;comment:批次称重描述"`
+	PigBatchID   uint      `gorm:"not null;index;comment:关联的猪批次ID"`
+}
+
+func (WeighingBatch) TableName() string {
+	return "weighing_batches"
+}
+
+// WeighingRecord 记录了单次称重信息
+type WeighingRecord struct {
+	gorm.Model
+	Weight          float64   `gorm:"not null;comment:单只猪重量 (kg)"`
+	WeighingBatchID uint      `gorm:"not null;index;comment:关联的批次称重ID"`
+	PenID           uint      `gorm:"not null;index;comment:所在猪圈ID"`
+	OperatorID      uint      `gorm:"not null;comment:操作员ID"`
+	Remark          string    `gorm:"size:255;comment:备注"`
+	WeighingTime    time.Time `gorm:"primaryKey;comment:称重时间"`
+}
+
+func (WeighingRecord) TableName() string {
+	return "weighing_records"
+}