[Springframework-developer] RE: [Springframework] Request Binding

[<jue...@we...>]

Hi Rhandy,

For multiple form objects, you could use custom objects that you bind =
parameters onto via BindUtils and put in the session as some custom =
attribute. I consider it preferable to use a different strategy though: =
Not a map, but a custom root object that contains the form objects as =
bean properties, like a MyRootObject class with getMyFirstObject and =
getMySecondFormObject methods. It's easy to bind to the contained =
objects via nested properties, e.g. "myFirstFormObject.myProperty" and =
"mySecondFormObject.myOtherProperty".

Regarding a list of objects, it's probably indeed the best way to parse =
respective request parameters manually, in a custom onBindAndValidate =
implementation. Especially if you want to add and remove elements, I =
can't think of a different way. We could try to bind to an existing list =
of objects, but it's not too obvious how to go about this (via an index? =
what if it's a Set, Collection, or Map), so we don't support this yet. =
If you have an idea how to achieve this, please let me know :-)

Regards,
Juergen


-----Original Message-----
From: Rhandy Lado [mailto:rh...@do...]
Sent: Monday, July 07, 2003 10:49 AM
To: j=FCrgen h=F6ller [werk3AT]
Subject: [Springframework] Request Binding


Hi Jurgen,

I've been using the FormController classes in a few webpages now and
found that I sometimes need to work with more than one form object. How
do I return more than two objects and bind each of them in the webpage?
Should I put each object in a Map and then return the map? If so, how do
you access the map using the <i21:bind> tags?

Also, I have a list defined in my form object. Do the <i21:bind> tags
support binding data to a list? If not, do you have any suggestions on
how I may go about this? (I was initially thinking of passing back a
series of request parameters and manually adding these values to the
form object list but I have a feeling there is a more elegant way of
doing this.)

Thanks in advance,
Rhandy