I recently wanted to adopt some checkboxes in a form derived from Fox Contacts.
Such a form is used both for entering and updating data.
My idea was to have some switches, some easy to use Yes/No fields,
with an immediate "boolean" feeling of On/Off useable for setting and
updating PTVs.
Radio buttons were not interesting as I felt they were better suited
for "real" values (Male/Female) and also they are less compact.
Moreover, I had problems setting defaults values, whereas checkboxes
have a "natural" zero value as a start.
I tried but failed to have them working.
Thanks to Hans, I then learned that checkboxes only send a value if
checked, whereas they send just nothing when not checked. This way,
there is no way to update/zero an already set value just by unchecking
a checkbox.
After some attempts, we found that there is an easy and well-working hack
(:input hidden $:abc 0:)
(:input checkbox $:abc 1:)
It is perhaps well known, or perhaps not.
So, I just wanted to share it
:-)
Thanks!
Luigi
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