Implementation method of membership level function in Go language development ordering system

Go language development method to implement membership level function in ordering system

With the rise of e-commerce and the improvement of people's living standards, more and more restaurants Begin to introduce a membership system to attract and retain customers. In the ordering system, the implementation of the membership level function is very important. Different privileges and benefits can be provided through different membership levels, thereby increasing customer loyalty and consumption frequency.

This article will use Go language as an example to introduce how to implement the membership level function in the ordering system and provide corresponding code examples.

1. Database design and management

First of all, we need to design and manage the database used to store member information. Common relational databases include MySQL, PostgreSQL, etc. Here we use MySQL as an example to demonstrate.

CREATE TABLE IF NOT EXISTS members (
    id INT PRIMARY KEY,
    name VARCHAR(100),
    level INT,
    points INT
);

The above is a simple membership table structure, including four fields: id (member ID), name (member name), level (membership level) and points (points). It can be adjusted and expanded according to actual needs.

2. Implementation of membership level function

Next, we divide the membership level function into the following steps to implement:

1. Member registration: design an interface , provides member registration function and saves member information into the database.

func registerMember(name string) error {
    // 生成新的会员ID
    id := generateMemberID()
    
    // 插入会员信息到数据库
    _, err := db.Exec("INSERT INTO members (id, name, level, points) VALUES (?, ?, ?, ?)", id, name, 1, 0)
    if err != nil {
        return err
    }

    return nil
}

2. Member points increase: Design an interface to add corresponding points according to the customer's checkout amount, and update the points field in the database.

func addPointsToMember(id int, amount float64) error {
    // 根据会员ID查询当前积分
    var points int
    err := db.QueryRow("SELECT points FROM members WHERE id = ?", id).Scan(&points)
    if err != nil {
        return err
    }

    // 计算新的积分
    newPoints := points + int(amount)
    
    // 更新积分到数据库
    _, err = db.Exec("UPDATE members SET points = ? WHERE id = ?", newPoints, id)
    if err != nil {
        return err
    }

    return nil
}

3. Member level change: Design a timed task or trigger mechanism to change the level based on the member’s points at the end of each month or quarter, and update the level in the database field.

func updateMemberLevel() error {
    // 查询所有会员信息
    rows, err := db.Query("SELECT id, points FROM members")
    if err != nil {
        return err
    }
    defer rows.Close()

    for rows.Next() {
        var id, points int
        err = rows.Scan(&id, &points)
        if err != nil {
            return err
        }

        // 根据积分判断会员等级
        level := calculateMemberLevel(points)

        // 更新等级到数据库
        _, err = db.Exec("UPDATE members SET level = ? WHERE id = ?", level, id)
        if err != nil {
            return err
        }
    }

    return nil
}

4. Member privileges and benefits: Design an interface to provide different privileges and benefits based on membership level.

func getMemberDiscountLevel(id int) float64 {
    // 查询会员等级
    var level int
    err := db.QueryRow("SELECT level FROM members WHERE id = ?", id).Scan(&level)
    if err != nil {
        return 0.0
    }

    // 根据会员等级返回不同的折扣级别
    switch level {
    case 1:
        return 0.9
    case 2:
        return 0.8
    case 3:
        return 0.7
    default:
        return 1.0
    }
}

3. Summary

Through the above code examples, we can see that it is not complicated to use Go language to develop the membership level function in the ordering system. We only need to design the database table structure, and then write the corresponding interface and logic code to implement functions such as member registration, points increase, level changes, and privileges.

Of course, this is just a simple example. In the actual development process, more factors need to be considered, such as concurrent access, error handling, data security, etc. I hope that readers can understand how to implement the membership level function in the ordering system in Go language through the introduction of this article, and apply relevant ideas and codes in actual projects.

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