It is 4 months later and I still haven't come up with a solution for this. I
gave up on it back then and somebody else has come to me trying to solve the
problem. Things have changed since we are now using Tapestry 4, so the info
about the defer component is out of date, but the situation is about the
same. I need to perform validation that depends on two fields' inputs. How
do I do this?
-Chris
On 6/2/05, Chris Norris <[EMAIL PROTECTED]> wrote:
>
> I'm going to try to boil this down to the neccesities. If it doesn't
> make sense, I'll provide some code.
>
> I have a Foreach loop inside of a form. The loop generates a couple of
> sets of FieldLabel/ValidField components*.
>
> The problem is that two of the fields' validation depend on each other.
> If both fields are empty, they both need to be marked as errored so that
> the error markup will be written. If one or the other has a value, they
> are both valid. Can someone point me in the best direction for this?
>
> My first thought was to record the name of the ValidField component when
> the page was getting the value for it. I would get the names, something
> like validComponentName and validComponentName$0. At form rewind time,
> though, I couldn't figure out how to get the components given those
> names and set them in error. It seems impossible, given that getName()
> will always return the most recent name generated for the component. I
> tried going through the ValidationDelegate's FieldTrackings and going
> through the map returned by getComponents(), neither of which worked
> very well.
>
> My next option was going to be to make a special validator for this
> purpose. It would have to be a page property rather than a bean so that
> the same validator would be used for both ValidFields. All of these
> approaches seem ugly to me. Ideas? Directions?
>
> -Chris
>
>
> *uses a Defer type component to take care of the off by one validation
> error. the Defer component wraps a FieldLabel and takes in a block that
> contains a ValidField:
> protected void renderComponent(IMarkupWriter writer, IRequestCycle
> cycle)
> {
> IMarkupWriter nested = writer.getNestedWriter();
> getBlock().renderBody(nested, cycle);
> renderBody(writer, cycle);
> nested.close();
> }
>
>
>
