On Fri, Apr 29, 2011 at 7:24 AM, Haim Schindler <[email protected]>wrote:
> on the first request to:
>
>
> www.mysite.com/clickPage?p=100
>
> the page was loaded and then:
>
> 1. based on "p=100" I do consuming calculation to calculate
> "calculatedValue"
> 2. now, I create the form, having "calculatedValue" as HiddenField. (I
> dont need the state "p" anymore for next steps)
>
> When submitting the form, page is called again (for second time), but now,
> the value of "p" is not relevant anymore (it could also be many "p"'s like:
> "p1", "p2", ... , "p100").
> I want to handle the "post" request, and for that I need only
> "calculatedValue" I dont care about "p" now.
> But because the way Click works, I have to construct the FORM again so
> "onSubmit" will be executed. why should I ? I am not going to render the
> form again, I just want to process the "onSubmit" call and then decide to
> redirect to somewhere else. (in other words, I dont need the data the I
> needed before to construct the form)
>
>
>
When you do www.mysite.com/clickPage?p=100 you are doing a get request. I
usually put a public variable - in this case P - in the page and in the
onGet() I do initialize the form fields that I need so:
<quote>
/** Bindable variables(ID, used on the Get method) can automatically
have their value set by request parameters */
public String id;
/** Bindable variables(used to track where the page was requested) can
automatically have their value set by request parameters */
public String referrer;
private EntityManager em = EntityManagerContext.getEntityManager();
.
.
.
public void onGet() {
System.out.println("\n onGet() method \n");
if (id != null) {
Vehicle vehicle = em.find(Vehicle.class, id);
if (vehicle != null) {
// Copy vehicle data to form. The idField value will be set
by
// this call
form.copyFrom(vehicle);
//id parameter of the page is NOT null, then isNew=false
isNewField.setValueObject(false);
//it is the PK, here we can't change it, whick in this case
idField
//is not a HiddenField
idField.setReadonly(true);
}
} else {
//id parameter of the page is null, then isNew=true
isNewField.setValueObject(true);
}
if (referrer != null) {
// Set referrerField HiddenField to bound referrer field
referrerField.setValue(referrer);
}
}
</quote>
Hth,
Gilberto
