You need to have you value binding for TextField be either a Numeric object
type or native numeric value. That's just the way it is for now...Won't be
in tap4.1...
On 2/17/06, Brian Long <[EMAIL PROTECTED]> wrote:
>
> Hi guys,
>
> I've spend this afternoon trying to get the minimum and maximum validators
> for Tapestry 4.0 to work without success.
>
> I have a TextField component with an associated FieldLabel component onto
> which I attach the Min and Max validators :
>
> <td>
> <label jwcid="@FieldLabel" field="component:dummyTextField" displayName=
> "DummyTextField">DummyTextField</label>
> </td>
> <td>
> <input jwcid="[EMAIL PROTECTED]" value="ognl:amount"
> validators="validators:min=15,max=5000"
> size="10" />
> </td>
>
> Pretty straightforward, or so you'd think! The problem is that I get a
> Class
> Cast Exception when I run the application
>
> >>java.lang.ClassCastException
> >>java.lang.String
>
> in Tapestry and I enter data into this textfield and submit the form. The
> problem is that the validate method in Min Class (
> org.apache.tapestry.form.validator.Min.validate(Min.java:53)), as you can
> see it's trying to cast the contents of the received
> Object to an Number, the problem it that this Object Contains a String,
> well, we are using a TextField component after all?
>
> public void validate(IFormComponent field, ValidationMessages messages,
> Object object)
> throws ValidatorException
> {
> Number value = (Number) object;
>
> if (_min > value.doubleValue())
> throw new ValidatorException(buildMessage(messages, field),
> ValidationConstraint.TOO_SMALL);
> }
>
> Now I know that you can't cast from a String to a
> Number,Integer,BigDecimal
> etc, but it's an Object we're casting from. I
> know that it contains a string, but its a numeric string i.e "123", is it
> that the Min class is at fault here or is it something I'm
> doing wrong?
>
> If Jesse Kuhnert is reading this and has five minutes to deliver the
> answer
> to my question it would be much appreciated.
>
> Brian Long.
>
>
