Goravel ORM 新增模型关联,用 Golang 写关联也可以跟 Laravel 简单 - V2EX
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Goravel ORM 新增模型关联,用Golang 写关联也可以跟 Laravel 简单

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  •   Bowens 2023-03-16 22:25:28 +08:00 1615 次点击
    这是一个创建于 943 天前的主题,其中的信息可能已经有所发展或是发生改变。

    关于 Goravel

    Goravel 是一个功能完备、具有良好扩展能力的 Web 应用程序框架。作为一个起始脚手架帮助 Golang 开发者快速构建自己的应用。框架风格与 Laravel 保持一致,让 PHPer 不用学习新的框架,也可以愉快的玩转 Golang !

    ORM 模块上新「模型关联」,好用的飞起,有码有真相!

    定义模型

    一个用户可以发布多篇文章

    type User struct { orm.Model Name string Posts []*Post } type Post struct { orm.Model UserID uint Name string } 

    查找(同时预加载关联模型)

    var user models.User facades.Orm.Query().With("Post").Find(&user) // 预加载多个关联模型(嵌套预加载) facades.Orm.Query().With("Post").With("Phone.Contact").Find(&user) // 为预加载添加约束 facades.Orm.Query().With("Post", "name = ?", "author").Find(&user) facades.Orm.Query().With("Post", func(query orm.Query) orm.Query { return query.Where("name = ?", "author") }).Find(&book) 

    延迟预加载

    var user models.User facades.Orm.Query().Find(&user) facades.Orm.Query().Load(&user, "Post") // 为预加载添加约束 facades.Orm.Query().Load(&book, "Post", "name = ?", "author").Find(&book) facades.Orm.Query().Load(&book, "Post", func(query orm.Query) orm.Query { return query.Where("name = ?", "author") }).Find(&book) 

    创建(同时创建关联模型)

    user := User{Name: "user", Post: &Post{Name: "post"}} // 创建 User 的同时创建所有子关联 facades.Orm.Query().Select(orm.Associations).Create(&user) 

    更多使用细节请 查看文档,Welcome Star, PR and Issues !

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