This approach obviously offers more precise control than the simple password-based authentication shown earlier, and is recommended for applications that require multiple levels of access control.
这种方法显然比前面显示的基于密码的方法提供更加精确的访问，并且推荐需要多级访问控制的应用程序使用该方法。
The queries are simple with good performance because you need not do any joins to access multiple subclasses, and ActiveRecord can use the type column to determine which records to return.
这些查询简单且性能很好，因为您无需进行任何连接来访问多个子类，ActiveRecord可以使用type列决定哪个记录能够返回。
The queries are simple with good performance because you need not do any joins to access multiple subclasses, and ActiveRecord can use the type column to determine which records to return.
这些查询简单且性能很好，因为您无需进行任何连接来访问多个子类，ActiveRecord可以使用type列决定哪个记录能够返回。
应用推荐