django form: how to check out checkbox state in template

Question

I have a form with checkboxes that works fine, but when the user submits the form with errors and my checkbox is checked I need to change div class which holds the checkbox. So

Answer 1

Use {% if form.mycheckbox.value %}. This will evaluate to true if the box is checked. For the opposite behavior, use {% if not form.mycheckbox.value %}.

Note the syntax is {% if ... %}, not {{ if ...}}. Percent-brackets are for commands, double-brackets are for outputting variables.