I have a form which has (dynamically-generated) checkboxes (from database rows).
these are of the form: <input type=checkbox name="ismember:list:string" checked><dtml-var sequence-var-name> (some do not default to checked).
When I'm processing the form data, the list contains data for only those that are checked (i.e. no list if none are checked, a short list if some are checked).
That's a tricky issue with web programming in general: a form will only report a value for a check box when it is checked, and otherwise will ignore it. There are two common ways out: 1) drop the checkbox and use radio buttons (or perhaps some other widget), which will guarantee a return value. 1b) add a hidden field for each question, and count an affirmative only when you get the hidden field and the interactive checkbox's value. 2) somehow know server-side what your questions would have been and compare the returned "affirmative" responses. Number 2 is more work, but better with regards to security (you can't trust users to exclusively use your form) and allows you to keep your existing aesthetic (as opposed to #1). I suppose there's also some monkey business you could do with JavaScript, but I don't really care enough to check on that. --jcc