On 5/9/08, Kirk Strauser ([EMAIL PROTECTED]) wrote:
>On Tuesday 06 May 2008, Scott SA wrote:
>
>> These are M2M relationship records handled transparently for you. In
>> reality, they are in a table in between your two 'Role' tables. If you
>> want to delete them, then you can select and delete them programatically
>> (i.e. from a button on your form)
>
>I think I expressed myself poorly. What I meant was that when a visitor is
>editing a form, and they accidentally click in a MultipleChoiceField widget
>and select one of the options, there's no way (that I've found) for them to
>un-select that option before clicking "Submit".
>
>Imagine a field in a job application like "Which crimes have you been
>convicted of? [Armed robbery] [Arson] [Kidnapping]". You bump "Arson" by
>mistake. Don't you wish there was a "none of the above" option to select
>instead?
I wonder what Freud would have said about that... LOL
For the admin interface, anyway:
help_text="Use shift-click to add more than one. Ctl-click
(Cmd-click for Mac) to de-select your Freudian slip"
The select box works the same in custom forms, but I don't recall if the
help-text shows.
Otherwise, it is a smidge of JavaScript unless you want to reload the form. A
quick google for "javascript clear | empty select list" seemed to have a few
options like the discussion for this one:
<http://www.tek-tips.com/viewthread.cfm?qid=1121894&page=1>
HTH
Scott
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