[Solved]-How to get rid of the bogus choice generated by RadioSelect of Django Form

by

9👍

✅

Even without blank=True it shows the extra input. I have created a new Widget:

from itertools import chain
from django.forms import RadioSelect
from django.utils.encoding import force_unicode

class RadioSelectNotNull(RadioSelect):
    def get_renderer(self, name, value, attrs=None, choices=()):
        """Returns an instance of the renderer."""
        if value is None: value = ''
        str_value = force_unicode(value) # Normalize to string.
        final_attrs = self.build_attrs(attrs)
        choices = list(chain(self.choices, choices))
        if choices[0][0] == '':
            choices.pop(0)
        return self.renderer(name, str_value, final_attrs, choices)
👤NickJ

6👍

Set blank=False (or just remove it) and also add default='Unspecified'

👤frnhr

1👍

You can set the choices when you set the widget. It’s showing the —- because in your model you have blank=True.

Just use the choices arg of the widget and set it to the choices you set in your model.

👤dting

1👍

By default the widget used by ModelChoiceField will have an empty choice at the top of the list.

You can change the text of this label (which is “———” by default) with the empty_label attribute, or you can disable the empty label entirely by setting empty_label to None:

A custom empty label:

field1 = forms.ModelChoiceField(queryset=..., empty_label="(Nothing)")

No empty label:

field2 = forms.ModelChoiceField(queryset=..., empty_label=None)
👤violenttom

0👍

Django <= 1.10

RadioSelectNotNull widget 

from itertools import chain
from django.forms import RadioSelect
from django.utils.encoding import force_unicode

class RadioSelectNotNull(RadioSelect):
"""
A widget which removes the default '-----' option from RadioSelect
"""
    def get_renderer(self, name, value, attrs=None, choices=()):
        """Returns an instance of the renderer."""
        if value is None: value = ''
        str_value = force_unicode(value) # Normalize to string.
        final_attrs = self.build_attrs(attrs)
        choices = list(chain(self.choices, choices))
        if choices[0][0] == '':
            choices.pop(0)
        return self.renderer(name, str_value, final_attrs, choices)

Django >= 1.11

As after Django 1.10 following method is no more in RadioSelect or in its ancestors. That’s why upper widget will not remove bogus choice generated by RadioSelect.

def get_renderer(self, name, value, attrs=None, choices=()):

So to remove bogus choice generated by RadioSelect use following widget. I have tested this till Django 2.0

from django.forms import RadioSelect
class RadioSelectNotNull(RadioSelect):
    """
    A widget which removes the default '-----' option from RadioSelect
    """
    def optgroups(self, name, value, attrs=None):
        """Return a list of optgroups for this widget."""
        if self.choices[0][0] == '':
            self.choices.pop(0)
        return super(RadioSelectNotNull, self).optgroups(name, value, attrs)
👤Muhammad Zeshan Arif

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