Go language development of door-to-door cooking system: How to implement dish customization function?

Go language development of door-to-door cooking system: How to implement dish customization function?

With the improvement of living standards and people's pursuit of healthy diet, more and more people are beginning to choose door-to-door cooking services to satisfy their taste needs. Against this background, developing a door-to-door cooking system has become a commercial project with great potential. In this system, the dish customization function is undoubtedly a very critical link, allowing users to freely select ingredients and ingredients and customize their own special dishes. This article will introduce how to use the Go language to develop a door-to-door cooking system, and explain in detail how to implement the dish customization function.

First of all, we need to build a basic framework for the door-to-door cooking system. We can use the Go language web framework gin to simplify the development process. First, we need to install gin:

go get -u github.com/gin-gonic/gin

Then, we create a gin instance in the main.go file and set the routing:

package main

import (
    "github.com/gin-gonic/gin"
)

func main() {
    r := gin.Default()

    // 设置路由
    r.GET("/", func(c *gin.Context) {
        c.JSON(200, gin.H{
            "message": "Welcome to the Online Cooking System!",
        })
    })

    r.Run() // 启动服务
}

On this basis, we need to design the database model To store dish and user information. We use the ORM framework gorm of the Go language to simplify the interaction process with the database.

First, we need to install gorm:

go get -u github.com/jinzhu/gorm

Then, we create the models folder and create two files dish.go and user.go in it to define the dish model and user model respectively. :

package models

import (
    "github.com/jinzhu/gorm"
)

type Dish struct {
    gorm.Model
    Name        string  `json:"name"`
    Description string  `json:"description"`
    Ingredients string  `json:"ingredients"`
    Price       float64 `json:"price"`
}

package models

import (
    "github.com/jinzhu/gorm"
)

type User struct {
    gorm.Model
    Username string `json:"username"`
    Password string `json:"password"`
}

Next, we need to initialize the database and create dishes and user tables. We can add the following code in the main function of main.go:

import (
    "github.com/jinzhu/gorm"
    _ "github.com/jinzhu/gorm/dialects/mysql"
    "github.com/username/repo/models"
)

func main() {
    // 连接数据库
    db, err := gorm.Open("mysql", "user:password@/database?charset=utf8mb4&parseTime=True&loc=Local")
    if err != nil {
        panic("failed to connect database")
    }
    defer db.Close()

    // 自动迁移模型
    db.AutoMigrate(&models.Dish{}, &models.User{})
}

Then, we can implement the dish customization function. Add the following code to main.go:

r.POST("/dish/customize", func(c *gin.Context) {
    var dish models.Dish

    // 参数绑定
    if err := c.ShouldBindJSON(&dish); err != nil {
        c.JSON(400, gin.H{
            "message": "Invalid request body",
        })
        return
    }

    // 保存到数据库
    db.Create(&dish)

    c.JSON(200, dish)
})

Through this interface, users can send a POST request to customize dishes. Request example:

{
    "name": "麻辣香锅",
    "description": "非常辣的川菜",
    "ingredients": "牛肉、辣椒、豆芽、花菜、土豆、毛肚",
    "price": 38.8
}

Through the above code, we can save the user-customized dish information to the database and return the corresponding results to the user.

Through such a door-to-door cooking system in Go language, we provide users with the function of customizing dishes, which can meet users' needs for personalized meals. Of course, developing a door-to-door cooking system involves far more functions than that, and it also needs to implement user registration, login, order management and other functions. However, through the code examples in this article, readers can have a preliminary understanding of how to use Go language to develop a door-to-door cooking system and how to implement dish customization functions.

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