Hi,
I have a Foreach loop in which I want to validate the fields inside it. For any regular required or minimum-length validation that's fine, but I'm trying to build a validator that checks if each field is unique. For example, let's say the only field I have inside the foreach loop is a field for a name. Let's say this loop iterates 5 times so that there would be 5 text fields rendered. I would like each of these "names" to be unique. What I have done so far is, I created a validator called UniqueValidator and I'm passing it the same list of objects to perform the validation that I use in the foreach loop. This implementation causes two problems: 1) Tapestry is updating the list of objects with the submitted values only after the validations run, so I'm actually checking for uniqueness in a deprecated list. I have to be able to see the values that were just submitted in case the user changes more than one value. 2) I can't tell where in the object list is the field that is being validated, so I can't skip the item on the list that is being checked and I end up returning validation errors even if a name is entered only once in the list. I can work around this by checking if there is more than one object in the list that is the same as the input, but I don't think it's such an elegant solution. Any ideas? Thanks, Denis
