创建动态 Web 应用程序
考虑数据注册应用程序（注册事件、检查等）；人们将如何建造它？您可以定义 n 个数据字段，例如 Date_Of_Event、Event_Description 等。或者可以构建一个动态应用程序，其中存在某种定义可用表/列的元数据。
那么我的问题是：这种实现有什么好的例子吗？也许有框架可以帮助我创建这样的应用程序？
仅供参考：我以前曾是此类应用程序的开发人员，因此我对如何完成它有相当多的了解，但我正在寻找更好的方法来做到这一点。
Consider a data registration application (register events, inspections etc.); how would one go about building it? You could define n-number of data fields, such as Date_Of_Event, Event_Description etc. OR one could build a dynamic application where there is metadata of some sort that defines what tables/columns are available.
My question is then: Are there any good examples of such implementations? Perhaps there are frameworks that can assist me in creating such an application?
FYI: I have been a developer on such an application previously and so I have a fair bit of knownledge on how it can be done, but I am looking at better ways of doing this.
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这完全取决于它的动态程度。如果动态数据字段的数量非常大，那么，当然，您可以创建或使用一些框架，但如果可能的话，我真的会考虑研究更精确的数据模型的定义。当您需要一些灵活性时，通用方法很好，但如果您需要大量定制，那么与具有更严格数据模型的系统相比，这种动态字段灵活性可能会带来很多痛苦的维护。
编辑：如果您想基于某些元数据模型（例如UML图）构建一些应用程序，那么您可以查看一些MDA工具，例如AndroMDA。
It all depends on how much dynamic is that. If the number of dynamic data fields is very big, then, of course, you may create or use some framework, but I would really consider looking into definition of more precise data model if it is possible. Generic approach is nice when you need some flexibilty, but if you need a lot of customization, then this dynamic field flexbility can bring a lot of painful maintenance comparing to a system with more strict data model.
EDIT: If you want to build some application based on some meta data model e.g. UML diagram, then you can look into some MDA tools like AndroMDA.