Golang gin框架cookie生成问题

Question

这是我的代码，我从go-gin框架文档中复制了它，我的问题是当createCookie函数命中时，它返回"NotSet“，我必须运行相同的API回调来获取cookie。

// createCookie accepts c as gin context and create cookies
func createCookie(c *gin.Context) (string, error) {
    cookie, err := c.Cookie("device")

    if err != nil {
        cookie = "NotSet"
        c.SetCookie("device", "test", 3600, "/", os.Getenv("AUTH_DOMAIN"), true, true)
    }

    return cookie, nil
}

Answer 1

// createCookie accepts c as gin context and create cookies
func createCookie(c *gin.Context) (string, error) {
    cookie, err := c.Cookie("device")

    if err != nil {
        // Replae it with your initial value
        cookie = "NotSet"
        c.SetCookie("device", cookie, 3600, "/", os.Getenv("AUTH_DOMAIN"), true, true)
    }

    return cookie, nil
}