#27445: RadioSelect widget does not work for NullBooleanField
-------------------------------------+-------------------------------------
     Reporter:  Anne Fleischer       |                    Owner:  Jacob
                                     |  Rief
         Type:  New feature          |                   Status:  assigned
    Component:  Forms                |                  Version:  master
     Severity:  Normal               |               Resolution:
     Keywords:  NullBooleanField,    |             Triage Stage:  Accepted
  RadioSelect                        |
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Takis Issaris):

 After digging through the code for quite some time, I decided to cheat a
 little and have another go at search StackOverflow.

 This is what I found regarding the saved value not being reflected in the
 rendered form (in an UpdateView for example).


 It was suggested [http://stackoverflow.com/a/28262878] that one should use
 the following choices to make it work:
 {{{
 choices=((None, 'N/A'), (True, 'Yes'), (False, 'No'))
 }}}

 That works for me for True and False, but not for the None value of the
 NullBooleanField.


 On the same thread a user named 'x0nix' suggests this snippet
 [http://stackoverflow.com/a/28906939]:
 {{{
 class NullBooleanRadioSelect(RadioSelect):
     def __init__(self, *args, **kwargs):
         choices = (
             (None, ugettext_lazy('Unknown')),
             (True, ugettext_lazy('Yes')),
             (False, ugettext_lazy('No'))
         )
         super(NullBooleanRadioSelect, self).__init__(choices=choices,
 *args, **kwargs)

     _empty_value = None
 }}}

 {{{
 ...
         widgets = {'foo': NullBooleanRadioSelect()}
 }}}

 With this snippet all three values seem to be rendered correctly.

--
Ticket URL: <https://code.djangoproject.com/ticket/27445#comment:6>
Django <https://code.djangoproject.com/>
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