This error means that your appInfo object is null. So, wherever you
moved your appInfo restoration/initialization logic, it's not getting
called int this case anymore.
Danny
Chris Chiappone wrote:
Thanks for the quick responses. The two responses I got were
basically the same so I tried it. The problem is now I get:
binding: ExpressionBinding[EditApp appInfo.name]
location: context:/WEB-INF/EditApp.page, line 41, column 58
ognl.OgnlException
source is null for getProperty(null, "name")
So I am still a bit stuck on what I should do.
On 7/15/05, Danny Mandel <[EMAIL PROTECTED]> wrote:
In your pageBeginRender method you can check to see if the form is
rewinding. If it is, you probably don't want to initialize things in
there i.e.:
public void pageBeginRender(PageEvent event) {
if (!event.getRequestCycle().isRewinding()) {
// do your normal initialization stuff and create if null
}
}
In the case where it is rewinding, then you'll want to move your object
retrieval/restoration to a different place. This can be done by binding
your object's id to a hidden field that will fetch it or by use of a
data squeezer. This has been addressed many times on this list so it
should be in the archives and I know that there is a wiki page on using
a data squeezer to do this sort of thing:
http://wiki.apache.org/jakarta-tapestry/DataSqueezer
Hope that helps,
Danny
Chris Chiappone wrote:
I am a bit confused about how pageBeginRender works during a form
submission Here is the code i have:
public void pageBeginRender(PageEvent event) {
// initialize app
retrieveApp(getAppVerId());
}
private void retrieveApp(Long id){
if(id != null){
System.out.println("Updating App: "+ id);
AppDAO dao = new AppDAO();
AppVer ver = null;
AppInfo info = null;
ver = dao.getAppVerId(id, false);
info = ver.getAppInfo();
setAppInfo(info);
setAppVer(ver);
}
if(getAppInfo() == null){
System.out.println("Creating a new application");
setAppInfo(new AppInfo());
setAppVer(new AppVer());
getAppVer().setRegdate(new Date());
}
}
/**
* Action taken when this form has been submitted
*
* @param cycle
*/
public void formSubmit(IRequestCycle cycle){
System.out.println("Current VerId = "+ getAppVerId());
// Check to see all validation was a success
ValidationDelegate delegate =
(ValidationDelegate)getBeans().getBean("delegate");
if(!delegate.getHasErrors()){
// Insert the new version
AppDAO dao = new AppDAO();
AppInfo info = getAppInfo();
AppVer ver = getAppVer();
....
Basically I need to initialize the AppInfo and AppVer objects when the
page is rendered. The page is an add/edit form. If appVerId is not
null I lookup AppInfo and AppVer to populate my form for editing, if
null create new objects. This seems to work fine. THe problem I am
having is that when I submit the form It create a new AppVer and
AppInfo because appVerId appears to be null in pageBeginRender(Event)
but when it continues to formSubmit my print is showing the the
appVerId != null which is what I expect. The problem is the objects
have been intialized as new so it ends up creating duplicates. Hope I
made this clear.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
