package models import ( "time" "go.mongodb.org/mongo-driver/bson/primitave" ) type OrderItem struct { ID primitave.ObjectID `bson:"_id"` Quantity *string `json:"quantity" validate:"required,eq=S|eq=M|eq=L"` Unit_price *float64 `json:"unit_price" validate:"required"` Created_at time.Time `json:"created_at"` Updated_at time.Time `json:"updated_at"` Food_id *string `json:"food_id" validate:"required"` Order_item_id string `json:"order_item_id" required:"required"` Order_id string `json:"order_id" required:"required"` }