final project structure

wagfarm-api/asset/fertilizer/model.go

@@ -0,0 +1,20 @@
+package fertilizer
+
+import "wagfarm-api/asset/base"
+
+type Fertilizer struct {
+	base.BoughtResource
+	FertilizerTypeID uint           `gorm:"not null"`
+	FertilizerType   FertilizerType `gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`
+	// Association to the ingredients. This represents the composition.
+	Ingredients []FertilizerIngredient `gorm:"not null; many2many:fertilizer_ingredient"`
+}
+
+type FertilizerIngredient struct {
+	FertilizerAssetID uint    `gorm:"primaryKey"` // foreign key to the fertilizer asset
+	IngredientID      uint    `gorm:"primaryKey"` // foreign key to the ingredient
+	Amount            float64 `gorm:"not null"`   // amount of the ingredient
+
+	// Preload the ingredient details if needed.
+	Ingredient Ingredient `gorm:"not null"`
+}

wagfarm-api/asset/fertilizer/route.go

@@ -0,0 +1,11 @@
+package fertilizer
+
+import (
+	"wagfarm-api/generic"
+
+	"github.com/gin-gonic/gin"
+)
+
+func RegisterRoutes(rg *gin.RouterGroup) {
+	generic.RegisterCRUDRoutes(rg.Group("/fertilizer"), generic.DefaultCRUDController[Fertilizer]())
+}