[Wicket-user] Detached Models and Forms
Is it possible to use a LoadableDetachableModel with a Form? The problem I'm running into is the following:1) Create the Form with: new Form(form, new CompoundPropertyModel(new MyDetachableModel(fooId, fooService))); 2) Present the page to the user for editing. The user edits the fields and submits the form.3) The model object is reloaded from the database/cache, wiping out what the user entered. Is there any way around clobbering the user input? It doesn't look like it since the LoadableDetachableModel is doing exactly what it's supposed to, but I want to make sure I'm not missing something. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Detached Models and Forms
Yeah, those models are typically perfect for doing database stuff. The only thing is that if all validations pass, you should update the database. But that's usually exactly what you want, right? If validation fails, the model is indeed reloaded from the database, but that's not something that is in the user's way as for components for which the validation failed, the input values of last request will be displayed instead of the current model values. Eelco On 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote: Is it possible to use a LoadableDetachableModel with a Form? The problem I'm running into is the following: 1) Create the Form with: new Form(form, new CompoundPropertyModel(new MyDetachableModel(fooId, fooService))); 2) Present the page to the user for editing. The user edits the fields and submits the form. 3) The model object is reloaded from the database/cache, wiping out what the user entered. Is there any way around clobbering the user input? It doesn't look like it since the LoadableDetachableModel is doing exactly what it's supposed to, but I want to make sure I'm not missing something. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Detached Models and Forms
But that's not the behavior I'm seeing. On successful validation, the model object is refreshed from the database after the form updates the model object, clobbering the user-entered data. On 7/31/06, Eelco Hillenius [EMAIL PROTECTED] wrote: Yeah, those models are typically perfect for doing database stuff. Theonly thing is that if all validations pass, you should update thedatabase. But that's usually exactly what you want, right? Ifvalidation fails, the model is indeed reloaded from the database, but that's not something that is in the user's way as for components forwhich the validation failed, the input values of last request will bedisplayed instead of the current model values.EelcoOn 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote: Is it possible to use a LoadableDetachableModel with a Form?The problem I'm running into is the following: 1) Create the Form with: new Form(form, new CompoundPropertyModel(new MyDetachableModel(fooId, fooService))); 2) Present the page to the user for editing.The user edits the fields and submits the form. 3) The model object is reloaded from the database/cache, wiping out what the user entered. Is there any way around clobbering the user input?It doesn't look like it since the LoadableDetachableModel is doing exactly what it's supposed to, but I want to make sure I'm not missing something. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user-Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share youropinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV___Wicket-user mailing listWicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Detached Models and Forms
After successful validation, you should update the database with the object that is in your detachable model. They should be in sync then. If for some reason, you need to read in the value fresh in the same request, just call detach on that model to ensure next time it is read it will first re-load the actual model. Eelco On 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote: But that's not the behavior I'm seeing. On successful validation, the model object is refreshed from the database after the form updates the model object, clobbering the user-entered data. On 7/31/06, Eelco Hillenius [EMAIL PROTECTED] wrote: Yeah, those models are typically perfect for doing database stuff. The only thing is that if all validations pass, you should update the database. But that's usually exactly what you want, right? If validation fails, the model is indeed reloaded from the database, but that's not something that is in the user's way as for components for which the validation failed, the input values of last request will be displayed instead of the current model values. Eelco On 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote: Is it possible to use a LoadableDetachableModel with a Form? The problem I'm running into is the following: 1) Create the Form with: new Form(form, new CompoundPropertyModel(new MyDetachableModel(fooId, fooService))); 2) Present the page to the user for editing. The user edits the fields and submits the form. 3) The model object is reloaded from the database/cache, wiping out what the user entered. Is there any way around clobbering the user input? It doesn't look like it since the LoadableDetachableModel is doing exactly what it's supposed to, but I want to make sure I'm not missing something. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ Wicket-user mailing list Wicket-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wicket-user
Re: [Wicket-user] Detached Models and Forms
So something like this?public void onSubmit() { Foo f = (Foo) getModelObject(); ...}or like: public void onSubmit() { Foo f = (Foo) getModel().getObject(null); ...}
Because the first one refreshes the object from the database. On 7/31/06, Eelco Hillenius [EMAIL PROTECTED]
wrote:After successful validation, you should update the database with the
object that is in your detachable model. They should be in sync then.If for some reason, you need to read in the value fresh in the samerequest, just call detach on that model to ensure next time it is readit will first re-load the actual model.
EelcoOn 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote: But that's not the behavior I'm seeing.On successful validation, the model object is refreshed from the database after the form updates the model
object, clobbering the user-entered data.On 7/31/06, Eelco Hillenius [EMAIL PROTECTED] wrote: Yeah, those models are typically perfect for doing database stuff. The
only thing is that if all validations pass, you should update the database. But that's usually exactly what you want, right? If validation fails, the model is indeed reloaded from the database, but
that's not something that is in the user's way as for components for which the validation failed, the input values of last request will be displayed instead of the current model values.
EelcoOn 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote: Is it possible to use a LoadableDetachableModel with a Form?The
problem I'm running into is the following: 1) Create the Form with: new Form(form, new CompoundPropertyModel(new MyDetachableModel(fooId, fooService)));
2) Present the page to the user for editing.The user edits the fields and submits the form. 3) The model object is reloaded from the database/cache, wiping out what
the user entered. Is there any way around clobbering the user input?It doesn't look like it since the LoadableDetachableModel is doing exactly what it's supposed
to, but I want to make sure I'm not missing something. - Take Surveys. Earn Cash. Influence the Future of IT
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Re: [Wicket-user] Detached Models and Forms
Both methods have the same effect. The attachement of models is hidden
in the models, not in the components. Detachement is done by
components after rendering. Preferably is getModelObject, but just
because it is shorter and it hides getting the model.
What happens in that request is that first the model object will be
fetched from the database (the first time model.getObject is called
somewhere). When all validation succeeds, that object is then updated
with the form values etc. If you access that in the onSubmit method,
you'll still have that same - now udpated - object, provided you
didn't manually detach your model yourself somehow. So, just get that
object, save it, and you're done.
Eelco
On 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote:
So something like this?
public void onSubmit() {
Foo f = (Foo) getModelObject();
...
}
or like:
public void onSubmit() {
Foo f = (Foo) getModel().getObject(null);
...
}
Because the first one refreshes the object from the database.
On 7/31/06, Eelco Hillenius [EMAIL PROTECTED] wrote:
After successful validation, you should update the database with the
object that is in your detachable model. They should be in sync then.
If for some reason, you need to read in the value fresh in the same
request, just call detach on that model to ensure next time it is read
it will first re-load the actual model.
Eelco
On 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote:
But that's not the behavior I'm seeing. On successful validation, the
model
object is refreshed from the database after the form updates the model
object, clobbering the user-entered data.
On 7/31/06, Eelco Hillenius [EMAIL PROTECTED] wrote:
Yeah, those models are typically perfect for doing database stuff. The
only thing is that if all validations pass, you should update the
database. But that's usually exactly what you want, right? If
validation fails, the model is indeed reloaded from the database, but
that's not something that is in the user's way as for components for
which the validation failed, the input values of last request will be
displayed instead of the current model values.
Eelco
On 7/31/06, Nick Heudecker [EMAIL PROTECTED] wrote:
Is it possible to use a LoadableDetachableModel with a Form? The
problem
I'm running into is the following:
1) Create the Form with: new Form(form, new
CompoundPropertyModel(new
MyDetachableModel(fooId, fooService)));
2) Present the page to the user for editing. The user edits the
fields
and
submits the form.
3) The model object is reloaded from the database/cache, wiping out
what
the
user entered.
Is there any way around clobbering the user input? It doesn't look
like
it
since the LoadableDetachableModel is doing exactly what it's supposed
to,
but I want to make sure I'm not missing something.
-
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cash
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