toJson method
Implementation
Map<String, dynamic> toJson() => {
"uid": uid,
"created_at": createdAt?.toIso8601String(),
"coupon_code": couponCode,
"delivery": delivery?.toJson(),
"expiry_at": expiryAt,
"note": note,
"reward_id": rewardId,
"reward_name": rewardName,
"reward_qty": rewardQty,
"reward_type": rewardType,
"status": status,
"task_id": taskId,
"updated_at": updatedAt?.toIso8601String(),
"used_count": usedCount,
};