internal/app/controller/management/pig_farm_controller.go

@@ -53,12 +53,7 @@ func (c *PigFarmController) CreatePigHouse(ctx echo.Context) error {
 		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "创建猪舍失败", action, "业务逻辑失败", req)
 	}
 
-	resp := dto.PigHouseResponse{
+	return controller.SendSuccessWithAudit(ctx, controller.CodeCreated, "创建成功", house, action, "创建成功", house)
-		ID:          house.ID,
-		Name:        house.Name,
-		Description: house.Description,
-	}
-	return controller.SendSuccessWithAudit(ctx, controller.CodeCreated, "创建成功", resp, action, "创建成功", resp)
 }
 
 // GetPigHouse godoc
@@ -86,12 +81,7 @@ func (c *PigFarmController) GetPigHouse(ctx echo.Context) error {
 		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "获取猪舍失败", action, "业务逻辑失败", id)
 	}
 
-	resp := dto.PigHouseResponse{
+	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", house, action, "获取成功", house)
-		ID:          house.ID,
-		Name:        house.Name,
-		Description: house.Description,
-	}
-	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", resp, action, "获取成功", resp)
 }
 
 // ListPigHouses godoc
@@ -110,16 +100,7 @@ func (c *PigFarmController) ListPigHouses(ctx echo.Context) error {
 		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "获取列表失败", action, "业务逻辑失败", nil)
 	}
 
-	var resp []dto.PigHouseResponse
+	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", houses, action, "获取成功", houses)
-	for _, house := range houses {
-		resp = append(resp, dto.PigHouseResponse{
-			ID:          house.ID,
-			Name:        house.Name,
-			Description: house.Description,
-		})
-	}
-
-	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "获取成功", resp, action, "获取成功", resp)
 }
 
 // UpdatePigHouse godoc
@@ -154,12 +135,7 @@ func (c *PigFarmController) UpdatePigHouse(ctx echo.Context) error {
 		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "更新失败", action, "业务逻辑失败", req)
 	}
 
-	resp := dto.PigHouseResponse{
+	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", house, action, "更新成功", house)
-		ID:          house.ID,
-		Name:        house.Name,
-		Description: house.Description,
-	}
-	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", resp, action, "更新成功", resp)
 }
 
 // DeletePigHouse godoc
@@ -222,14 +198,7 @@ func (c *PigFarmController) CreatePen(ctx echo.Context) error {
 		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "创建猪栏失败", action, "业务逻辑失败", req)
 	}
 
-	resp := dto.PenResponse{
+	return controller.SendSuccessWithAudit(ctx, controller.CodeCreated, "创建成功", pen, action, "创建成功", pen)
-		ID:        pen.ID,
-		PenNumber: pen.PenNumber,
-		HouseID:   pen.HouseID,
-		Capacity:  pen.Capacity,
-		Status:    pen.Status,
-	}
-	return controller.SendSuccessWithAudit(ctx, controller.CodeCreated, "创建成功", resp, action, "创建成功", resp)
 }
 
 // GetPen godoc
@@ -312,15 +281,7 @@ func (c *PigFarmController) UpdatePen(ctx echo.Context) error {
 		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "更新失败", action, "业务逻辑失败", req)
 	}
 
-	resp := dto.PenResponse{
+	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", pen, action, "更新成功", pen)
-		ID:         pen.ID,
-		PenNumber:  pen.PenNumber,
-		HouseID:    pen.HouseID,
-		Capacity:   pen.Capacity,
-		Status:     pen.Status,
-		PigBatchID: pen.PigBatchID,
-	}
-	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", resp, action, "更新成功", resp)
 }
 
 // DeletePen godoc
@@ -388,13 +349,5 @@ func (c *PigFarmController) UpdatePenStatus(ctx echo.Context) error {
 		return controller.SendErrorWithAudit(ctx, controller.CodeInternalError, "更新猪栏状态失败", action, err.Error(), id)
 	}
 
-	resp := dto.PenResponse{
+	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", pen, action, "更新成功", pen)
-		ID:         pen.ID,
-		PenNumber:  pen.PenNumber,
-		HouseID:    pen.HouseID,
-		Capacity:   pen.Capacity,
-		Status:     pen.Status,
-		PigBatchID: pen.PigBatchID,
-	}
-	return controller.SendSuccessWithAudit(ctx, controller.CodeSuccess, "更新成功", resp, action, "更新成功", resp)
 }

internal/app/service/pig_farm_service.go

@@ -16,20 +16,20 @@ import (
 // PigFarmService 提供了猪场资产管理的业务逻辑
 type PigFarmService interface {
 	// PigHouse methods
-	CreatePigHouse(name, description string) (*models.PigHouse, error)
+	CreatePigHouse(name, description string) (*dto.PigHouseResponse, error)
-	GetPigHouseByID(id uint) (*models.PigHouse, error)
+	GetPigHouseByID(id uint) (*dto.PigHouseResponse, error)
-	ListPigHouses() ([]models.PigHouse, error)
+	ListPigHouses() ([]dto.PigHouseResponse, error)
-	UpdatePigHouse(id uint, name, description string) (*models.PigHouse, error)
+	UpdatePigHouse(id uint, name, description string) (*dto.PigHouseResponse, error)
 	DeletePigHouse(id uint) error
 
 	// Pen methods
-	CreatePen(penNumber string, houseID uint, capacity int) (*models.Pen, error)
+	CreatePen(penNumber string, houseID uint, capacity int) (*dto.PenResponse, error)
 	GetPenByID(id uint) (*dto.PenResponse, error)
 	ListPens() ([]*dto.PenResponse, error)
-	UpdatePen(id uint, penNumber string, houseID uint, capacity int, status models.PenStatus) (*models.Pen, error)
+	UpdatePen(id uint, penNumber string, houseID uint, capacity int, status models.PenStatus) (*dto.PenResponse, error)
 	DeletePen(id uint) error
 	// UpdatePenStatus 更新猪栏状态
-	UpdatePenStatus(id uint, newStatus models.PenStatus) (*models.Pen, error)
+	UpdatePenStatus(id uint, newStatus models.PenStatus) (*dto.PenResponse, error)
 }
 
 type pigFarmService struct {
@@ -60,24 +60,51 @@ func NewPigFarmService(farmRepository repository.PigFarmRepository,
 
 // --- PigHouse Implementation ---
 
-func (s *pigFarmService) CreatePigHouse(name, description string) (*models.PigHouse, error) {
+func (s *pigFarmService) CreatePigHouse(name, description string) (*dto.PigHouseResponse, error) {
 	house := &models.PigHouse{
 		Name:        name,
 		Description: description,
 	}
 	err := s.farmRepository.CreatePigHouse(house)
-	return house, err
+	if err != nil {
+		return nil, err
+	}
+	return &dto.PigHouseResponse{
+		ID:          house.ID,
+		Name:        house.Name,
+		Description: house.Description,
+	}, nil
 }
 
-func (s *pigFarmService) GetPigHouseByID(id uint) (*models.PigHouse, error) {
+func (s *pigFarmService) GetPigHouseByID(id uint) (*dto.PigHouseResponse, error) {
-	return s.farmRepository.GetPigHouseByID(id)
+	house, err := s.farmRepository.GetPigHouseByID(id)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.PigHouseResponse{
+		ID:          house.ID,
+		Name:        house.Name,
+		Description: house.Description,
+	}, nil
 }
 
-func (s *pigFarmService) ListPigHouses() ([]models.PigHouse, error) {
+func (s *pigFarmService) ListPigHouses() ([]dto.PigHouseResponse, error) {
-	return s.farmRepository.ListPigHouses()
+	houses, err := s.farmRepository.ListPigHouses()
+	if err != nil {
+		return nil, err
+	}
+	var resp []dto.PigHouseResponse
+	for _, house := range houses {
+		resp = append(resp, dto.PigHouseResponse{
+			ID:          house.ID,
+			Name:        house.Name,
+			Description: house.Description,
+		})
+	}
+	return resp, nil
 }
 
-func (s *pigFarmService) UpdatePigHouse(id uint, name, description string) (*models.PigHouse, error) {
+func (s *pigFarmService) UpdatePigHouse(id uint, name, description string) (*dto.PigHouseResponse, error) {
 	house := &models.PigHouse{
 		Model:       gorm.Model{ID: id},
 		Name:        name,
@@ -91,7 +118,15 @@ func (s *pigFarmService) UpdatePigHouse(id uint, name, description string) (*mod
 		return nil, ErrHouseNotFound
 	}
 	// 返回更新后的完整信息
-	return s.farmRepository.GetPigHouseByID(id)
+	updatedHouse, err := s.farmRepository.GetPigHouseByID(id)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.PigHouseResponse{
+		ID:          updatedHouse.ID,
+		Name:        updatedHouse.Name,
+		Description: updatedHouse.Description,
+	}, nil
 }
 
 func (s *pigFarmService) DeletePigHouse(id uint) error {
@@ -117,7 +152,7 @@ func (s *pigFarmService) DeletePigHouse(id uint) error {
 
 // --- Pen Implementation ---
 
-func (s *pigFarmService) CreatePen(penNumber string, houseID uint, capacity int) (*models.Pen, error) {
+func (s *pigFarmService) CreatePen(penNumber string, houseID uint, capacity int) (*dto.PenResponse, error) {
 	// 业务逻辑：验证所属猪舍是否存在
 	_, err := s.farmRepository.GetPigHouseByID(houseID)
 	if err != nil {
@@ -134,7 +169,16 @@ func (s *pigFarmService) CreatePen(penNumber string, houseID uint, capacity int)
 		Status:    models.PenStatusEmpty,
 	}
 	err = s.penRepository.CreatePen(pen)
-	return pen, err
+	if err != nil {
+		return nil, err
+	}
+	return &dto.PenResponse{
+		ID:        pen.ID,
+		PenNumber: pen.PenNumber,
+		HouseID:   pen.HouseID,
+		Capacity:  pen.Capacity,
+		Status:    pen.Status,
+	}, nil
 }
 
 func (s *pigFarmService) GetPenByID(id uint) (*dto.PenResponse, error) {
@@ -197,7 +241,7 @@ func (s *pigFarmService) ListPens() ([]*dto.PenResponse, error) {
 	return response, nil
 }
 
-func (s *pigFarmService) UpdatePen(id uint, penNumber string, houseID uint, capacity int, status models.PenStatus) (*models.Pen, error) {
+func (s *pigFarmService) UpdatePen(id uint, penNumber string, houseID uint, capacity int, status models.PenStatus) (*dto.PenResponse, error) {
 	// 业务逻辑：验证所属猪舍是否存在
 	_, err := s.farmRepository.GetPigHouseByID(houseID)
 	if err != nil {
@@ -222,7 +266,18 @@ func (s *pigFarmService) UpdatePen(id uint, penNumber string, houseID uint, capa
 		return nil, ErrPenNotFound
 	}
 	// 返回更新后的完整信息
-	return s.penRepository.GetPenByID(id)
+	updatedPen, err := s.penRepository.GetPenByID(id)
+	if err != nil {
+		return nil, err
+	}
+	return &dto.PenResponse{
+		ID:         updatedPen.ID,
+		PenNumber:  updatedPen.PenNumber,
+		HouseID:    updatedPen.HouseID,
+		Capacity:   updatedPen.Capacity,
+		Status:     updatedPen.Status,
+		PigBatchID: updatedPen.PigBatchID,
+	}, nil
 }
 
 func (s *pigFarmService) DeletePen(id uint) error {
@@ -260,7 +315,7 @@ func (s *pigFarmService) DeletePen(id uint) error {
 }
 
 // UpdatePenStatus 更新猪栏状态
-func (s *pigFarmService) UpdatePenStatus(id uint, newStatus models.PenStatus) (*models.Pen, error) {
+func (s *pigFarmService) UpdatePenStatus(id uint, newStatus models.PenStatus) (*dto.PenResponse, error) {
 	var updatedPen *models.Pen
 	err := s.uow.ExecuteInTransaction(func(tx *gorm.DB) error {
 		pen, err := s.penRepository.GetPenByIDTx(tx, id)
@@ -310,5 +365,12 @@ func (s *pigFarmService) UpdatePenStatus(id uint, newStatus models.PenStatus) (*
 	if err != nil {
 		return nil, err
 	}
-	return updatedPen, nil
+	return &dto.PenResponse{
+		ID:         updatedPen.ID,
+		PenNumber:  updatedPen.PenNumber,
+		HouseID:    updatedPen.HouseID,
+		Capacity:   updatedPen.Capacity,
+		Status:     updatedPen.Status,
+		PigBatchID: updatedPen.PigBatchID,
+	}, nil
 }

openspec/changes/refactor-business-logic-layering/design.md

@@ -162,3 +162,70 @@
 ### Open Questions
 
 - 暂无。
+
+---
+
+## `pig-farm` 模块重构设计
+
+### Context
+
+与 `monitor` 模块类似, `pig_farm_controller.go` 当前包含了将 `service` 层返回的 `models.PigHouse` 和 `models.Pen`
+实体手动转换为 `dto.PigHouseResponse` 和 `dto.PenResponse` 的逻辑。此外,
+控制器还处理了部分本应由服务层处理的业务错误判断 (例如 `service.ErrHouseNotFound`)。
+
+这种模式导致了与 `monitor` 模块相同的职责不清、代码重复和可测试性差的问题。
+
+### Goals / Non-Goals
+
+#### Goals
+
+- **迁移数据转换逻辑**: 将 `pig-farm` 模块中所有的数据转换逻辑从控制器层 (`pig_farm_controller.go`) 迁移到服务层 (
+  `pig_farm_service.go`)。
+- **统一服务层接口**: 修改 `PigFarmService` 接口, 使其直接返回响应 DTO (`dto.XxxResponse`)。
+- **简化控制器**: 精简 `PigFarmController` 中的代码, 移除所有 `models` 到 `dto` 的转换代码, 使其直接使用服务层返回的
+  DTO。
+
+#### Non-Goals
+
+- **不修改业务逻辑**: 本次重构严格保证业务逻辑不变。服务层将精确复制控制器层现有的转换逻辑, 不增加或减少任何字段。
+- **不改变 API 契约**: API 的请求和响应对最终用户保持完全一致。
+
+### Decisions
+
+- **决策：在服务层完成 `models` 到 `dto` 的转换**
+    - **理由**: 与其他模块保持一致, 将数据转换视为服务层业务逻辑的一部分。这确保了服务接口的稳定性和调用方的便利性。
+    - **具体实现**: `pig_farm_service.go` 中的方法在从 `repository` 获取 `models` 实体后, 将其转换为对应的 `dto` 再返回。
+
+### Migration Plan
+
+1. **修改 `internal/app/service/pig_farm_service.go`**
+    - **更新 `PigFarmService` 接口**:
+        - `CreatePigHouse(...) (*models.PigHouse, error)` -> `CreatePigHouse(...) (*dto.PigHouseResponse, error)`
+        - `GetPigHouseByID(...) (*models.PigHouse, error)` -> `GetPigHouseByID(...) (*dto.PigHouseResponse, error)`
+        - `ListPigHouses(...) ([]models.PigHouse, error)` -> `ListPigHouses(...) ([]dto.PigHouseResponse, error)`
+        - `UpdatePigHouse(...) (*models.PigHouse, error)` -> `UpdatePigHouse(...) (*dto.PigHouseResponse, error)`
+        - `CreatePen(...) (*models.Pen, error)` -> `CreatePen(...) (*dto.PenResponse, error)`
+        - `UpdatePen(...) (*models.Pen, error)` -> `UpdatePen(...) (*dto.PenResponse, error)`
+        - `UpdatePenStatus(...) (*models.Pen, error)` -> `UpdatePenStatus(...) (*dto.PenResponse, error)`
+    - **实现数据转换**:
+        - 在上述每个方法的实现中, 在从 `repository` 获得 `models` 对象后, 添加代码将其转换为对应的 `dto.XxxResponse` 对象。
+        - 转换逻辑将严格按照 `pig_farm_controller.go` 中现有的实现, 确保字段一一对应, 无任何增删。
+        - 例如, 在 `UpdatePigHouse` 中:
+
+
+2. **修改 `internal/app/controller/management/pig_farm_controller.go`**
+    - **移除 DTO 转换代码**:
+        - 在 `CreatePigHouse`, `GetPigHouse`, `UpdatePigHouse` 方法中, 删除手动创建 `dto.PigHouseResponse` 的代码。
+        - 在 `ListPigHouses` 方法中, 删除用于遍历 `houses` 并创建 `[]dto.PigHouseResponse` 的 `for` 循环。
+        - 在 `CreatePen`, `UpdatePen`, `UpdatePenStatus` 方法中, 删除手动创建 `dto.PenResponse` 的代码。
+    - **更新服务调用**:
+        - 将服务层返回的 DTO 对象直接传递给 `controller.SendSuccessWithAudit`。
+
+
+3. **验证**
+    - 通过代码审查确认转换逻辑被精确迁移。
+    - 运行相关测试, 并通过手动 API 测试验证端点行为与重构前完全一致。
+
+### Open Questions
+
+- 暂无。

openspec/changes/refactor-business-logic-layering/tasks.md

@@ -51,17 +51,17 @@
 
 ### 2.3 `pig-farm` 模块
 
-- [ ] 2.3.1 **修改 `internal/app/service/pig_farm_service.go`：**
+- [x] 2.3.1 **修改 `internal/app/service/pig_farm_service.go`：**
-    - [ ] 将 `CreatePigHouse`, `GetPigHouseByID`, `ListPigHouses`, `UpdatePigHouse`, `CreatePen`, `GetPenByID`,
+    - [x] 将 `CreatePigHouse`, `GetPigHouseByID`, `ListPigHouses`, `UpdatePigHouse`, `CreatePen`, `GetPenByID`,
       `ListPens`, `UpdatePen`, `UpdatePenStatus` 方法的返回值 `models.Xxx` 或 `[]models.Xxx` 替换为 `dto.XxxResponse` 或
       `[]dto.XxxResponse`。
-    - [ ] 在服务层内部将 `repository` 返回的 `models` 对象转换为 `dto.XxxResponse`。
+    - [x] 在服务层内部将 `repository` 返回的 `models` 对象转换为 `dto.XxxResponse`。
-    - [ ] 将控制器中处理服务层特定业务错误（如 `service.ErrHouseNotFound`）的逻辑移入服务层，服务层应返回更抽象的错误或直接返回
+    - [x] 将控制器中处理服务层特定业务错误（如 `service.ErrHouseNotFound`）的逻辑移入服务层，服务层应返回更抽象的错误或直接返回
       DTO。
-- [ ] 2.3.2 **修改 `internal/app/controller/management/pig_farm_controller.go`：**
+- [x] 2.3.2 **修改 `internal/app/controller/management/pig_farm_controller.go`：**
-    - [ ] 移除控制器中手动将领域实体转换为 DTO 的逻辑。
+    - [x] 移除控制器中手动将领域实体转换为 DTO 的逻辑。
-    - [ ] 移除控制器中直接处理服务层特定业务错误类型的逻辑。
+    - [x] 移除控制器中直接处理服务层特定业务错误类型的逻辑。
-    - [ ] 调整服务层方法的调用，使其直接处理服务层返回的 `dto.XxxResponse`。
+    - [x] 调整服务层方法的调用，使其直接处理服务层返回的 `dto.XxxResponse`。
 
 ### 2.4 `plan` 模块