如何重定向到另一个网页

Question

我想做的事
注册成功后，我想重定向到索引页面。

有什么问题
填写用户名和密码后，页面不会重定向到索引页面，而是停留在signup.html。

我做了什么
我怀疑 createUser 函数返回 nil 并导致错误，但我无法解决。

代码

// User model declaration
type User struct {
    gorm.Model
    Username string `form:"username" binding:"required" gorm:"unique;not null"`
    Password string `form:"password" binding:"required"`
}

// User sign up
func createUser(username string, password string) []error {
    passwordEncrypt, _ := crypto.PasswordEncrypt(password)
    db := gormConnect()
    defer db.Close()
    // Insert
    if err := db.Create(&User{Username: username, Password: passwordEncrypt}).GetErrors(); err != nil {
        return err
    }
    return nil
}

func main(){
router := gin.Default()
    router.LoadHTMLGlob("front/*.html")

    dbInit()

    // index
    router.GET("/", func(c *gin.Context) {
        b_models := dbGetAll()
        num := dbGetNum()
        sumQuantity := dbGetSumQuantity()
        sumPrice := dbGetSumPrice()
        c.HTML(200, "belongings.html", gin.H{"b_models": b_models, "num": num, "sumQuantity": sumQuantity.Totalquantity, "sumPrice": sumPrice.Totalprice})
    })

    // User sign up page
    router.GET("/signup", func(c *gin.Context) {
        c.HTML(200, "signup.html", gin.H{})
    })

    // User sign up process
    router.POST("/signup", func(c *gin.Context) {
        var form User
        // Validation
        if err := c.Bind(&form); err != nil {
            c.HTML(http.StatusBadRequest, "signup.html", gin.H{"err": err})
            log.Println("fail to login because your info is invalid")
            c.Abort()
        } else {
            username := c.PostForm("username")
            password := c.PostForm("password")
            // Process to reject duplicate registered users
            if err := createUser(username, password); err != nil {
                c.HTML(http.StatusBadRequest, "signup.html", gin.H{"err": err})
                c.Abort()
            } else {
                log.Println("success to signup!")
                c.Redirect(302, "/")
            }
        }
    })
}

Answer 1

你可以用javascript改变页面，我不明白你为什么要你的后端做前端的东西。

window.location.href = "the_page.html"