Re: Ajax based filling of form
Awesome! Thanks for the help.
Regards,
Linda
John Krasnay wrote:
The problem is the CompoundPropertyModel continues to point to the
original Book object. You would have to get rid of the
CompoundPropertyModel and give each FormComponent its own model that is
tolerant to changes to the book member. Something like this would work:
add(new TextField("title", new PropertyModel(this, "book.title")));
jk
On Thu, Aug 13, 2009 at 09:15:50AM +0200, Linda van der Pal wrote:
Well the model doesn't update. (Not that I'd expect it to.)
Here's some pieces of my code I deem relevant to the problem.
if (key == null || key.getIsbn() == null) {
book = new Book();
} else {
book = bookRetriever.getBook(key.getIsbn(), key.getCollectionId());
}
setDefaultModel(new CompoundPropertyModel(book));
// ...
isbnField.add(new AjaxFormComponentUpdatingBehavior("onchange") {
private static final long serialVersionUID = 1L;
@Override
protected void onUpdate(final AjaxRequestTarget target) {
try {
book = bookRetriever.getBook(isbnField.getInput());
modelChanged();
target.addComponent(titleField);
//...
target.addComponent(genrefield);
} catch (SQLException e) {
//...
}
}
});
John Krasnay wrote:
Sounds like you're on the right track. What's the problem?
jk
On Wed, Aug 12, 2009 at 04:27:41PM +0200, Linda van der Pal wrote:
I have a panel with a form. This form has several fields, one of which
is the ISBN of a book. The fields are filled by a CompoundPropertyModel
if the user is editing his previous entry, and they are empty if the
user is adding a new book. Simply entering data or updating it and then
submitting already works. But now I want to fetch the data for the other
fields if the ISBN is already in the database. It is a multi-user
system, so it is in fact possible that the ISBN is already in there.
I was thinking of achieving this with AJAX, but I'm not really sure how
to do it. I was thinking of adding an AjaxFormComponentUpdatingBeavior,
where all the related fields are added to the target. But as the ISBN is
part of the model, I don't really now how to get this working. Any hints
on what direction I should be searching in?
Regards,
Linda
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RE: Ajax based filling of form
I believe this is a variable reference issue.
// instead of this
isbnField.add(new AjaxFormComponentUpdatingBehavior("onchange") {...@override
protected void onUpdate(final AjaxRequestTarget target) {try {book =
bookRetriever.getBook(isbnField.getInput());
// try this@overrideprotected void onUpdate(final AjaxRequestTarget target)
{try {book = bookRetriever.getBook(isbnField.getInput());setDefaultModel(new
CompoundPropertyModel(book));modelChanged();
When you passed in book to the constructor, it now has a reference to your book
object, when you execute this line:
book = bookRetriever.getBook(isbnField.getInput());
you are only changing the value of the variable book, but not the reference
stored in new CompoundPropertyModel(book). You should be able pull that
off in C++ by changing the value of the pointer, but you can't do that in java.
It is similar to this short code
String y = "example";java.util.HashMap h = new
java.util.HashMap();h.put("y",y);// changing the value of y y="not you";// see
that the value of y is not the same as the reference we stored in the
hashmapSystem.out.println(h.get("y"));System.out.println(y);
I hope that helps.
Russ
> Date: Thu, 13 Aug 2009 09:15:50 +0200
> From: lvd...@heritageagenturen.nl
> To: users@wicket.apache.org
> Subject: Re: Ajax based filling of form
>
> Well the model doesn't update. (Not that I'd expect it to.)
>
> Here's some pieces of my code I deem relevant to the problem.
>
>
> if (key == null || key.getIsbn() == null) {
> book = new Book();
> } else {
> book = bookRetriever.getBook(key.getIsbn(), key.getCollectionId());
> }
>
> setDefaultModel(new CompoundPropertyModel(book));
>
> // ...
>
> isbnField.add(new AjaxFormComponentUpdatingBehavior("onchange") {
> private static final long serialVersionUID = 1L;
>
> @Override
> protected void onUpdate(final AjaxRequestTarget target) {
> try {
> book = bookRetriever.getBook(isbnField.getInput());
> modelChanged();
>
> target.addComponent(titleField);
> //...
> target.addComponent(genrefield);
> } catch (SQLException e) {
> //...
> }
> }
> });
>
> John Krasnay wrote:
> > Sounds like you're on the right track. What's the problem?
> >
> > jk
> >
> > On Wed, Aug 12, 2009 at 04:27:41PM +0200, Linda van der Pal wrote:
> >
> >> I have a panel with a form. This form has several fields, one of which
> >> is the ISBN of a book. The fields are filled by a CompoundPropertyModel
> >> if the user is editing his previous entry, and they are empty if the
> >> user is adding a new book. Simply entering data or updating it and then
> >> submitting already works. But now I want to fetch the data for the other
> >> fields if the ISBN is already in the database. It is a multi-user
> >> system, so it is in fact possible that the ISBN is already in there.
> >>
> >> I was thinking of achieving this with AJAX, but I'm not really sure how
> >> to do it. I was thinking of adding an AjaxFormComponentUpdatingBeavior,
> >> where all the related fields are added to the target. But as the ISBN is
> >> part of the model, I don't really now how to get this working. Any hints
> >> on what direction I should be searching in?
> >>
> >> Regards,
> >> Linda
> >>
> >> -
> >> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> >> For additional commands, e-mail: users-h...@wicket.apache.org
> >>
> >>
> >
> > -
> > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> > For additional commands, e-mail: users-h...@wicket.apache.org
> >
> >
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG - www.avg.com
> > Version: 8.5.392 / Virus Database: 270.13.53/2299 - Release Date: 08/12/09
> > 18:12:00
> >
> >
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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>
_
Get back to school stuff for them and cashback for you.
http://www.bing.com/cashback?form=MSHYCB&publ=WLHMTAG&crea=TEXT_MSHYCB_BackToSchool_Cashback_BTSCashback_1x1
Re: Ajax based filling of form
The problem is the CompoundPropertyModel continues to point to the
original Book object. You would have to get rid of the
CompoundPropertyModel and give each FormComponent its own model that is
tolerant to changes to the book member. Something like this would work:
add(new TextField("title", new PropertyModel(this, "book.title")));
jk
On Thu, Aug 13, 2009 at 09:15:50AM +0200, Linda van der Pal wrote:
> Well the model doesn't update. (Not that I'd expect it to.)
>
> Here's some pieces of my code I deem relevant to the problem.
>
>
> if (key == null || key.getIsbn() == null) {
>book = new Book();
> } else {
>book = bookRetriever.getBook(key.getIsbn(), key.getCollectionId());
> }
>
> setDefaultModel(new CompoundPropertyModel(book));
>
> // ...
>
> isbnField.add(new AjaxFormComponentUpdatingBehavior("onchange") {
>private static final long serialVersionUID = 1L;
>
>@Override
>protected void onUpdate(final AjaxRequestTarget target) {
>try {
>book = bookRetriever.getBook(isbnField.getInput());
>modelChanged();
>
>target.addComponent(titleField);
>//...
>target.addComponent(genrefield);
>} catch (SQLException e) {
>//...
>}
>}
> });
>
> John Krasnay wrote:
> >Sounds like you're on the right track. What's the problem?
> >
> >jk
> >
> >On Wed, Aug 12, 2009 at 04:27:41PM +0200, Linda van der Pal wrote:
> >
> >>I have a panel with a form. This form has several fields, one of which
> >>is the ISBN of a book. The fields are filled by a CompoundPropertyModel
> >>if the user is editing his previous entry, and they are empty if the
> >>user is adding a new book. Simply entering data or updating it and then
> >>submitting already works. But now I want to fetch the data for the other
> >>fields if the ISBN is already in the database. It is a multi-user
> >>system, so it is in fact possible that the ISBN is already in there.
> >>
> >>I was thinking of achieving this with AJAX, but I'm not really sure how
> >>to do it. I was thinking of adding an AjaxFormComponentUpdatingBeavior,
> >>where all the related fields are added to the target. But as the ISBN is
> >>part of the model, I don't really now how to get this working. Any hints
> >>on what direction I should be searching in?
> >>
> >>Regards,
> >>Linda
> >>
> >>-
> >>To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> >>For additional commands, e-mail: users-h...@wicket.apache.org
> >>
> >>
> >
> >-
> >To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> >For additional commands, e-mail: users-h...@wicket.apache.org
> >
> >
> >
> >
> >No virus found in this incoming message.
> >Checked by AVG - www.avg.com
> >Version: 8.5.392 / Virus Database: 270.13.53/2299 - Release Date: 08/12/09
> >18:12:00
> >
> >
>
>
> -
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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>
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Re: Ajax based filling of form
Well the model doesn't update. (Not that I'd expect it to.)
Here's some pieces of my code I deem relevant to the problem.
if (key == null || key.getIsbn() == null) {
book = new Book();
} else {
book = bookRetriever.getBook(key.getIsbn(), key.getCollectionId());
}
setDefaultModel(new CompoundPropertyModel(book));
// ...
isbnField.add(new AjaxFormComponentUpdatingBehavior("onchange") {
private static final long serialVersionUID = 1L;
@Override
protected void onUpdate(final AjaxRequestTarget target) {
try {
book = bookRetriever.getBook(isbnField.getInput());
modelChanged();
target.addComponent(titleField);
//...
target.addComponent(genrefield);
} catch (SQLException e) {
//...
}
}
});
John Krasnay wrote:
Sounds like you're on the right track. What's the problem?
jk
On Wed, Aug 12, 2009 at 04:27:41PM +0200, Linda van der Pal wrote:
I have a panel with a form. This form has several fields, one of which
is the ISBN of a book. The fields are filled by a CompoundPropertyModel
if the user is editing his previous entry, and they are empty if the
user is adding a new book. Simply entering data or updating it and then
submitting already works. But now I want to fetch the data for the other
fields if the ISBN is already in the database. It is a multi-user
system, so it is in fact possible that the ISBN is already in there.
I was thinking of achieving this with AJAX, but I'm not really sure how
to do it. I was thinking of adding an AjaxFormComponentUpdatingBeavior,
where all the related fields are added to the target. But as the ISBN is
part of the model, I don't really now how to get this working. Any hints
on what direction I should be searching in?
Regards,
Linda
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.392 / Virus Database: 270.13.53/2299 - Release Date: 08/12/09 18:12:00
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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RE: Ajax based filling of form
All, I'm still green with Wicket and even greener on Facebook, so I had a hard time adding Facebook connect to my wicket app. I think this is due in large part to Facebook changing so often. Any ways, I have written up a new page for anyone else trying to do Facebook connect with Wicket. If I get some more time I would like to come up with a quick start, for now the wiki entry is all I had time to squeeze in. http://cwiki.apache.org/confluence/display/WICKET/Adding+Facebook+connect Russ _ Windows Live™: Keep your life in sync. http://windowslive.com/explore?ocid=PID23384::T:WLMTAGL:ON:WL:en-US:NF_BR_sync:082009
Re: Ajax based filling of form
Sounds like you're on the right track. What's the problem? jk On Wed, Aug 12, 2009 at 04:27:41PM +0200, Linda van der Pal wrote: > I have a panel with a form. This form has several fields, one of which > is the ISBN of a book. The fields are filled by a CompoundPropertyModel > if the user is editing his previous entry, and they are empty if the > user is adding a new book. Simply entering data or updating it and then > submitting already works. But now I want to fetch the data for the other > fields if the ISBN is already in the database. It is a multi-user > system, so it is in fact possible that the ISBN is already in there. > > I was thinking of achieving this with AJAX, but I'm not really sure how > to do it. I was thinking of adding an AjaxFormComponentUpdatingBeavior, > where all the related fields are added to the target. But as the ISBN is > part of the model, I don't really now how to get this working. Any hints > on what direction I should be searching in? > > Regards, > Linda > > - > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org > For additional commands, e-mail: users-h...@wicket.apache.org > - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Ajax based filling of form
I have a panel with a form. This form has several fields, one of which is the ISBN of a book. The fields are filled by a CompoundPropertyModel if the user is editing his previous entry, and they are empty if the user is adding a new book. Simply entering data or updating it and then submitting already works. But now I want to fetch the data for the other fields if the ISBN is already in the database. It is a multi-user system, so it is in fact possible that the ISBN is already in there. I was thinking of achieving this with AJAX, but I'm not really sure how to do it. I was thinking of adding an AjaxFormComponentUpdatingBeavior, where all the related fields are added to the target. But as the ISBN is part of the model, I don't really now how to get this working. Any hints on what direction I should be searching in? Regards, Linda - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
