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From "Iain Sanderson" <sande...@mc.duke.edu>
Subject RE: HOWTO pre-populate forms with data, then update ?
Date Thu, 23 Jan 2003 21:08:08 GMT
Alberto,

Perfect. And thanks, I'll give it a try. I'm sure this is what I needed to 
do.

Iain.


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Subject:        RE: HOWTO pre-populate forms with data, then update ?

You can create an instance of the form you need (if is not the one you are
already getting in the execute method).
Once you have the form, you can then populate it. Then add it to the 
request
using the name you defined for this form within your struts-config file.

You'll have something like:
-------------------
RegistrationUpdateForm myform = new RegistrationUpdateForm();
//populate myForm
...
//Add it to the request
request.setAttribute("formNameFromStrutsConfigFile", myform);
return mappings.findForward("success");
--------------------

Regards,
Alberto Corona
VP Of Consulting Services
ObjectWave Corp.


-----Original Message-----
From: Iain Sanderson [mailto:sande010@mc.duke.edu]
Sent: Thursday, January 23, 2003 2:43 PM
To: Struts Users Mailing List
Subject: Re: HOWTO pre-populate forms with data, then update ?


David,

Thanks for your reply. How do you put the info into the form bean?

I use a action called "RegistrationUpdateOpenAction"  to get the data from
the database and  forward to the view jsp (registrationUpdate.jsp), but I
don't know how to put that data into the form bean for this  ( the
underlying form bean would be RegistrationUpdateForm). I'm confused as the
form bean is created/recycled by Struts on opening the view. How do I get
premptive access to it? Can I just create it and add it to the request
scope? Won't struts create another one?

Iain.


Please respond to "Struts Users Mailing List"
<struts-user@jakarta.apache.org>
To:     struts-user@jakarta.apache.org
cc:

Subject:        Re: HOWTO pre-populate forms with data, then update ?

Traditionally you do this:
1.  GetMyFormAction determines if it's add or edit from a query string
attribute.
2.  For edit go get the info from db using the record's id you passed in
the
query string.
3.  Put that info into your form bean.
4.  Forward to your form

The form's input elements will be prepopulated with data for the edit
screen.

David






>From: "Iain Sanderson" <sande010@mc.duke.edu>
>Reply-To: "Struts Users Mailing List" <struts-user@jakarta.apache.org>
>To: struts-user@jakarta.apache.org
>Subject: HOWTO pre-populate forms with data, then update ?
>Date: Thu, 23 Jan 2003 15:20:40 -0500
>
>Newbie question:
>
>I've managed to use Struts forms as a means of  initial data entry (
>registration forms etc) but have got  stuck on how to use a form to
update
>data that already exists in a database. For example, a form where a user
>can update their user details (address, email etc) and then submit the
>updates. How is this best done in struts ?
>
>I'm sure there's a good way of doing this, but my Kludge so far has been
>to  create a bean in the session scope containing the data I want to
>populate the form with ( eg a user's current address), and then use
struts
>  html:text  tags to view  the bean data using their "name" and
"property"
>attributes.   Once the user has submitted their updates, the ActionForm
>accesses the form bean to obtain the updates, and applies the updates to
>the database.   I then of course have to update the  original bean's data
>with the new values ( eg their amended address) and send it back into the
>session scope.  It's a bit of a mess, but it works.
>
>I know there's a better way. Please help. Thanks.
>
>Iain Sanderson
>


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