Dynamic Validation

hey guys how can i validate array of data dynamically(the array is created dynamically by

javascript) knowing that i get error every time saying that it is not a binded object and it is a

string (the object i am trying to validate it)so how can i overcome this ?

thnaks alot for your time

Quote:

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Originally Posted by 4s

hey guys how can i validate array of data dynamically(the array is created dynamically by javascript) knowing that i get error every time saying that it is not a binded object and it is a string (the object i am trying to validate it)so how can i overcome this ?

thnaks alot for your time

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Hi,

some detailed information & code would help to solve the problem you're having. You can call the validator e.g. in the 'SimpleFormController' by implementing some appropriate method.
And as far as I know, you can manually bind the data aswell in the controller.

I hope this helps... if not, post some detailed data :)

Unfortunately, Spring won't automatically populate collections when it is trying to access some element inside that collection. If it's null, then it's null.

However, there are a couple of things you can do.

The first would be to populate the collection with the correct amount of objects that you expect. This might mean a two step process:

1) Add new object
2) Edit object

The second thing you can try is use LazyList from commons-collections.

http://jakarta.apache.org/commons/co.../LazyList.html

If you try to access an element in the list that doesn't yet exist, then it will create on automatically for you.

Seth

thanks alot for replying : well as for detailed info
the error i get is : java.lang.ClassCastException: java.lang.String

and the validation code that i used to validate the dynamic list is like this :


private void validateEquality(PaymentDocument document,
Errors errors) {
Long amount=document,.getAmount();
Long Sum=new Long(0);

//where Financialtransactiondetails is the list that contains the dynamic //data

Iterator itr=document,.getFinancialtransactiondetails().ite rator();


while(itr.hasNext())
{
Object currenct=itr.next();
Long cashAmount = new Long(((FinancialTransactionDetails)currenct).getAm ount());
log.debug(">>>>>>>>>>>>>>>>>>> cashAmount "+cashAmount);
Sum+=cashAmount;
}
//if the sum of all the money = the amount that the user entered then //every thing is good else i will raise an error

if(!Sum.equals(amount))
errors.rejectValue("amount","Error In Amount","Total Amount Must Be Equal To Details Amount");

}

--------------------------------------------------END OF VALIDATION-----------------------------------------------

*when i enter a wrong amount then i will be prompeted to enter the correct amount(that is right) and when i enter the correct amount (just to correct the wrong amount i entred before) i get the CLASS CAST EXCEPTION , if i entred it correct from the 1st time everything will work just fine......well got any idea