"Peter Bradley" wrote ...
>I don't know if this is any help, but we usually create UI objects that
hold the sort of thing that you're talking about, if I understand you
correctly. We store references to them in the Session. The data in these
objects reflects their state resulting from user input or other UI-specific
things (like default display values and so on). This data is validated as
appropriate, and has the appropriate business rules applied each time the
user leaves a page (or saves the data). It is at this point that the data
is passed from the UI layer to the business layer: and obviously we only
pass the data that we need at the BOL and DAL levels.
Hello Peter,
Thank you for your reply.
That makes sense to me I think, and I think it will fit with my current
project - just to run it past you in more depth...
I have a registration process with three stages, the third stage the user
selects "resources" which they require access to, this is done via a link on
the page which launches a popup window listing all available resources.
When the user selects one a little bit of a javascript populates a hidden
element on the parent page and fires a Click() event on a hidden button on
the parent page. Ajax then enables me to perform an asynchronous postback -
and this is where the magic happens!
I populate a "Resource" object, and using the ResourceID get the available
Access Levels for it.
The ResourceName is displayed on the page, underneath a drop down list
containing all of the AccessLevels, a second drop down box is also
displayed, this is populated again using Ajax when the user selects an
AccessLevel.
Because the user can add as many Resources as they wish the page builds up
with these controls, the problem I have run into is that I need the ability
to give it collection of bits a unique ID - and persist it. I am unable to
use the ResourceID as they can select the same resource more than once (by
design), therefore I want to create a GUID but store it.
If I was to create a UI object, and part of that object stores the GUID and
another part stores my Resource, AccessLevel choice, Parameter (second drop
down) choice - would this still *fit* the OO / Layers rules?
A screenshot of the page in question can be seen here:
<http://www.avon.nhs.uk/RobsToGo/ScreenShot.jpg>
Any further information would be appreciated.
Regards
Rob