Model类,集中整个应用的数据和业务逻辑——场景.属性和标签: /** * Returns a list of scenarios and the corresponding active attributes. * An active attribute is one that is subject to validation in the current scenario. * 返回所有场景及与之对应的 active 属性的列表 * active 属性是指在默认场景中验证的 * The r…