Django ModelForm with Select Widget - Use object.uid as default option value instead of object.id

Question

I have a form inheriting from ModelForm as such:

class ChildModel(ModelForm):
      class Meta:
          model = Documents
          fields = ('secretdocs')
          widgets = {
              'secretdocs': Select(attrs={'class': 'select'}),
          }

The model "secretdocs" has a uid. But when it prints out the select and option, the option values appear as such:

<select class="select" id="id_secretdocs" name="secretdocs">
    <option value="1">My Secret Doc</option>
</select>

But I want it to instead have the uid of the option:

<select class="select" id="id_secretdocs" name="secretdocs">
    <option value="cd2feb4a-58cc-49e7-b46e-e2702c8558fd">My Secret Doc</option>
</select>

I've so far tried to use BaseForm's data object and overwriting Select's value_from_datadict method but I'm pretty sure that wasn't the right approach. Does anyone know how I can do this?

Thanks in advance.

Answer 1

You can do something like this:

class ChildModel(ModelForm):

  secretdocs = forms.ChoiceField(choices=[(doc.uid, doc.name) for doc in Document.objects.all()])
  class Meta:
      model = Documents
      fields = ('secretdocs', )
      widgets = {
          'secretdocs': Select(attrs={'class': 'select'}),
      }