QuickForm Date Input: Dynamic Default Value?


the last weeks im experimenting with the WebPortal the potential seems really great... besides some smaller issues (Im wondering why this forum is so empty btw?).

Is there any way to dynamically set a default value for a Quick Form Date Input? E.g. I would like to set it always to the current day - this is not a problem via using a JavaSnippet or similar. Unfortunately this value cannot be changed by the user anymore - whatever he choses in the WebPortal will be overwritten by the DefaultValue.

For usability reasons i need it the other way around though... the users changes and overwrites the default value. Any idea?

I use the following workflow as a (not perfect) workaround for now: