定义猪的模型和营养需求模型

internal/infra/models/pig.go

@@ -0,0 +1,43 @@
+package models
+
+// PigBreed 猪品种模型
+type PigBreed struct {
+	Model
+	Name        string `gorm:"size:50;not null;comment:品种名称"`
+	Description string `gorm:"size:255;comment:品种描述"`
+}
+
+func (PigBreed) TableName() string {
+	return "pig_breeds"
+}
+
+// PigAgeStage 猪年龄阶段模型
+type PigAgeStage struct {
+	Model
+	Name        string `gorm:"size:50;not null;comment:年龄阶段名称 (如: 仔猪, 生长猪, 育肥猪)"`
+	Description string `gorm:"size:255;comment:阶段描述"`
+}
+
+func (PigAgeStage) TableName() string {
+	return "pig_age_stages"
+}
+
+// PigType 猪类型模型，代表特定品种和年龄阶段的组合
+type PigType struct {
+	Model
+	BreedID         uint32      `gorm:"not null;index;comment:关联的猪品种ID"`
+	Breed           PigBreed    `gorm:"foreignKey:BreedID"`
+	AgeStageID      uint32      `gorm:"not null;index;comment:关联的猪年龄阶段ID"`
+	AgeStage        PigAgeStage `gorm:"foreignKey:AgeStageID"`
+	Description     string      `gorm:"size:255;comment:该猪类型的描述或特点"`
+	DailyFeedIntake float32     `gorm:"comment:理论日均食量 (g/天)"`
+	DailyGainWeight float32     `gorm:"comment:理论日增重 (g/天)"`
+	MinDays         uint32      `gorm:"comment:该猪类型在该年龄阶段的最小日龄"`
+	MaxDays         uint32      `gorm:"comment:该猪类型在该年龄阶段的最大日龄"`
+	MinWeight       float32     `gorm:"comment:该猪类型在该年龄阶段的最小体重 (g)"`
+	MaxWeight       float32     `gorm:"comment:该猪类型在该年龄阶段的最大体重 (g)"`
+}
+
+func (PigType) TableName() string {
+	return "pig_types"
+}