fix purchase due date

internal/entities/purchase.go

@@ -5,17 +5,18 @@ import (
 )
 
 type Purchase struct {
-	Id         uint `gorm:"primaryKey;autoIncrement"`
+	Id         uint   `gorm:"primaryKey;autoIncrement"`
 	PrNumber   string `gorm:"not null"`
 	PoNumber   *string
 	PoDate     *time.Time
 	SupplierId uint `gorm:"not null"`
+	CreditTerm int  `gorm:"column:credit_term;not null;default:0"`
 	DueDate    *time.Time
 	Notes      *string
 	CreatedAt  time.Time  `gorm:"autoCreateTime"`
 	UpdatedAt  time.Time  `gorm:"autoUpdateTime"`
 	DeletedAt  *time.Time `gorm:"index"`
-	CreatedBy  uint     `gorm:"not null"`
+	CreatedBy  uint       `gorm:"not null"`
 
 	// Relations
 	Supplier       Supplier       `gorm:"foreignKey:SupplierId;references:Id"`