问题
I've got a web application with an NHibernate Data Access Layer. I have a large number of user preferences that can be stored, these are mainly booleans for example registering that a dialog has been dismissed and should not be showed again.
The problem is that with NHibernate I need to add to my database schema, and add a property to the persistent class every time a new dialog is added to register if it has been dismissed or not.
There must be an easier way. What is it?
回答1:
Another option is to read this post by Ayende, basically allowing for dynamic fields
A common theme in many application is the need to support custom / dynamic fields. In other words, the system admin may decide that the Customer needs to have a few additional fields that aren’t part of the mainline development.
Also read Ayende's last comment
- You can put a collection in a dynamic property.
- You can edit the configuration programatically
Edit For some reason I have just realised that I have answered this question that is over one year old! Got no idea how I got here! Answer is still a good one though
回答2:
You could use a settings table to store the preferences and add a value for every dialog:
Table Settings Id, UserId, DialogName, Value
1, 1, FirstDialog, True
2, 1, SecondDialog, False
3, 2, FirstDialog, False
4, 2, SecondDialog, False
来源：https://stackoverflow.com/questions/1929942/nhibernate-web-application-managing-user-preferences