Показать таблицы в PostgreSQL

Я сделал бы это путем подкласса RadioFieldRenderer и привязки его к пользовательскому виджету:

# forms.py
from django import forms
from django.forms.widgets import RadioSelect, RadioFieldRenderer
from django.template.loader import render_to_string
from myapp.models import RatherComplicatedModel


class MyRadioFieldRenderer(RadioFieldRenderer):
    def render(self):
        return render_to_string(
            'my_radio_widget.html',
                    {'field': self})


class MyRadioSelect(RadioSelect):
    renderer = MyRadioFieldRenderer


class RatherComplicatedForm(forms.ModelForm):
    RADIO_CHOICES = (
        ('none', "No Textbox"),
        ('one', "One Textbox: "),
    )
    rad = forms.ChoiceField(widget=MyRadioSelect(),choices=RADIO_CHOICES)

    class Meta:
        model = RatherComplicatedModel

Затем шаблон:

#my_radio_widget.html
<ul>
    {% for choice in field %}
        <li>
            <label for="id_{{ field.name }}_{{ forloop.counter0 }}">
                <input type="radio"
                       name="{{ field.name }}"
                       value="{{ choice.choice_value }}"
                       id="id_{{ field.name }}_{{ forloop.counter0 }}"
                       {% if field.value == choice.choice_value %}
                           checked='checked'
                       {% endif %}/>
                {{ choice.choice_label }}
            </label>
        </li>
    {% endfor %}
</ul>