first version of db model

wagfarm-api/models/taxonomy_models.go

@@ -1,7 +1,28 @@
 package models
 
-type Taxonomy struct {
-	ID    uint   `gorm:"primaryKey" json:"id"`
-	Type  string `gorm:"not null;index" json:"type"` // e.g., "unit", "color", etc.
-	Name   string `gorm:"not null;index" json:"name"`  // e.g., "kg", "lb"
-}
+type _Taxonomy struct {
+	ID   uint   `gorm:"primaryKey" json:"id"`
+	Name string `gorm:"not null;index" json:"name"` // e.g., "kg", "lb"
+}
+
+type Unit struct{ _Taxonomy }
+type Visibility struct{ _Taxonomy }
+type SeedingTechnique struct{ _Taxonomy }
+type SeedingCondition struct{ _Taxonomy }
+type Worker struct{ _Taxonomy }
+type Crop struct{ _Taxonomy }
+type Seller struct{ _Taxonomy }
+type Customer struct{ _Taxonomy }
+type SeedType struct {
+	_Taxonomy
+	CropID uint `gorm:"not null"`
+	Crop   Crop `gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE;"`
+}
+type Ingredient struct {
+	_Taxonomy
+	UnitID uint `gorm:"not null"`
+	Unit   Unit `gorm:"not null"`
+}
+type FertilizerType struct{ _Taxonomy }
+type PesticideType struct{ _Taxonomy }
+type ProductType struct{ _Taxonomy }