need to allow user to enter comments per row via a popup modal window.

anybody done this and what's the best way to implement? I need to be able to track/store the String they enter for each row in a <h:dataTable>. In this use case, user will be able to enter multiple comments for n rows prior to clicking the submit button.

any suggestions? I haven't seen this example in the Seam books or examples from the distro.

thx.