Hi all,
I have a question about validating one field with another.
I have a form that ask for the start page and for the end page of an
article. I need to validate whether the startPage is lesser or equal to
the endPage.
I could do this in public void onSubmit() {...} of the form like:
public void onSubmit() {
if(model.getStartPage()>model.getEndPage()){
this.error("The startPage cannot be bigger then the endPage");
}
...
}
However I wonder if that is not cleaner with a validator. My problem is
ATM that I have not found an example that shows how to validate a field
comparing it to another field in the same form.
In pseudo code:
RequiredTextField start = new RequiredTextField("startPage",
Integer.class);
add(start);
RequiredTextField end = new RequiredTextField("endPage", Integer.class);
// the next line does not exits but would be what I need
NumberValidator max = NumberValidator.minimum(start);
end.add(max);
add(end);
What is the best way to implement such a validation?
TIA for any tips.
salu2
--
Thorsten Scherler <thorsten.at.apache.org>
Open Source Java <consulting, training and solutions>
Sociedad Andaluza para el Desarrollo de la Sociedad
de la Información, S.A.U. (SADESI)
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