How to use Go language to develop the member birthday discount function of the ordering system

How to use Go language to develop the member birthday discount function of the ordering system

Preface:
With the development of the Internet, more and more catering companies have begun By moving the offline ordering system online, the convenient ordering method has been welcomed by consumers. In order to retain old customers and attract new customers, some catering companies have introduced membership systems and increased customer stickiness through birthday discounts. This article will introduce how to use Go language to develop the member birthday discount function of the ordering system, and attach a code example.

1. Requirements analysis of member birthday discount function
Before developing the member birthday discount function, we first need to clarify the functional requirements. The basic requirements for the member birthday discount function are as follows:

1. Member registration: Users can register as a member and provide basic information, including name, mobile phone number, email, etc.
2. Member information maintenance: Members can modify their personal information at any time.
3. Member Birthday Reminder: The system can remind members on their birthdays and send coupons and other gifts.
4. Member birthday discount: On the member’s birthday or within a certain period before and after the birthday, members can enjoy specific discounts, coupons, etc.

2. Database design and code implementation
On the basis of meeting the basic needs, we need to design a database to store member information and related data, and use Go language to implement business logic. This article takes the MySQL database as an example. The following is the design of the database and the structure of the related tables:

1. Member table (member)
   If the mobile phone number is used as the unique identifier, the table structure As follows:

   CREATE TABLE member (
     id INT PRIMARY KEY AUTO_INCREMENT,
     name VARCHAR(100) NOT NULL,
     phone VARCHAR(20) UNIQUE NOT NULL,
     email VARCHAR(100),
     birthday DATE NOT NULL
   );

2. Coupon table (coupon)

   CREATE TABLE coupon (
     id INT PRIMARY KEY AUTO_INCREMENT,
     member_id INT NOT NULL,
     coupon_code VARCHAR(100) NOT NULL,
     expire_date DATE NOT NULL,
     CONSTRAINT fk_member FOREIGN KEY (member_id) REFERENCES member(id)
   );

3. Registered member
   In Go language, you can use the gin framework to implement HTTP interface, register members through the interface. The following is a simplified code example:

   func registerMember(c *gin.Context) {
     var member Member
     if err := c.ShouldBindJSON(&member); err != nil {
    c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
    return
     }
   
     // 将会员信息存入数据库
     db.Create(&member)
   
     c.JSON(http.StatusOK, gin.H{"message": "注册成功"})
   }
   
   type Member struct {
     ID        int       `json:"id"`
     Name      string    `json:"name" binding:"required"`
     Phone     string    `json:"phone" binding:"required"`
     Email     string    `json:"email"`
     Birthday  time.Time `json:"birthday" binding:"required"`
   }
   
   // 路由配置
   func main() {
     r := gin.Default()
     r.POST("/members", registerMember)
     r.Run(":8080")
   }

4. Remind members
   We can use the cron library to implement scheduled tasks and send birthday reminder text messages or push notifications regularly. The following is a simplified code example:

   func remindMembers() {
     today := time.Now()
     tomorrow := today.AddDate(0, 0, 1)
   
     var members []Member
     db.Where("birthday BETWEEN ? AND ?", today, tomorrow).Find(&members)
   
     for _, member := range members {
    // 发送生日提醒短信或者推送通知
    sendSMS(member.Phone, "亲爱的会员，祝您生日快乐!")
   
    // 更新优惠券表
    coupon := Coupon{
      MemberID:    member.ID,
      CouponCode:  generateCouponCode(),
      ExpireDate:  today.AddDate(1, 0, 0),
    }
    db.Create(&coupon)
     }
   }
   
   // 生成优惠券码
   func generateCouponCode() string {
     // 生成优惠券码的逻辑
   }
   
   // 调度任务
   func main() {
     cron := cron.New()
     cron.AddFunc("0 0 0 * * *", remindMembers)
     cron.Start()
     defer cron.Stop()
   
     r := gin.Default()
     // 路由配置...
     r.Run(":8080")
   }

5. Birthday Discount
   When the order is settled, you can determine whether to enjoy the discount based on the member's birthday. The following is a simplified code example:

   func checkout(c *gin.Context) {
     var order Order
     // 获取订单信息...
   
     // 判断是否为会员
     if member, ok := getMemberByPhone(order.Phone); ok {
    // 判断是否在生日当天或者生日前后一定时间内
    today := time.Now()
    before := member.Birthday.AddDate(0, 0, -7)
    after := member.Birthday.AddDate(0, 0, 7)
    if today.After(before) && today.Before(after) {
      // 享受优惠
      order.Discount = 0.8
    }
     }
     
     // 处理订单...
     
     c.JSON(http.StatusOK, gin.H{"message": "结算成功"})
   }
   
   func getMemberByPhone(phone string) (Member, bool) {
     var member Member
     if err := db.Where("phone = ?", phone).First(&member).Error; err != nil {
    return member, false
     }
     return member, true
   }

Conclusion:
The above is the basic implementation idea and code example of using the Go language to develop the member birthday discount function of the ordering system. During the development process There may be other details that need to be considered and implemented based on actual needs. I hope this article can be helpful in developing the member birthday discount function of the ordering system.

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