实现修改猪营养需求

internal/infra/models/recipe.go

@@ -0,0 +1,29 @@
+package models
+
+// Recipe 配方模型
+type Recipe struct {
+	Model
+	Name        string `gorm:"size:100;not null;comment:配方名称"`
+	Description string `gorm:"size:255;comment:配方描述"`
+	// RecipeIngredients 关联此配方的所有原料组成
+	RecipeIngredients []RecipeIngredient `gorm:"foreignKey:RecipeID"`
+}
+
+func (Recipe) TableName() string {
+	return "recipes"
+}
+
+// RecipeIngredient 配方原料组成模型
+type RecipeIngredient struct {
+	Model
+	RecipeID      uint32      `gorm:"not null;comment:关联的配方ID"`
+	Recipe        Recipe      `gorm:"foreignKey:RecipeID"`
+	RawMaterialID uint32      `gorm:"not null;comment:关联的原料ID"`
+	RawMaterial   RawMaterial `gorm:"foreignKey:RawMaterialID"`
+	// 重量百分比
+	Percentage float32 `gorm:"not null;comment:原料在配方中的百分比 (0-1之间的小数, 例如0.15代表15%)"`
+}
+
+func (RecipeIngredient) TableName() string {
+	return "recipe_ingredients"
+}