Python Django将禁用的表单作为默认选中表单

我目前有以下代码。在我的表格里

from django import forms
from django.forms.widgets import Select


class SelectWithDisabled(Select):
    def create_option(self, name, value, label, selected, index, subindex=None, attrs=None):
        disabled = False
        if isinstance(label, dict):
            label, disabled = label['label'], label['disabled']
        option_dict = super(SelectWithDisabled, self).create_option(name, value, label, selected, index, subindex=subindex, attrs=attrs)
        if disabled:
            option_dict['attrs']['disabled'] = 'disabled'
        return option_dict

GAME_PHASES = [
    ('default', {'label': 'Choose an option', 'disabled': True}),
    ('opening', 'Opening'),
    ('midgame', 'Midgame'),
    ('endgame', 'Endgame'),
]


class SettingsForm(forms.Form):
    game_phases = forms.ChoiceField(label='Phase of the Game:', choices=GAME_PHASES, required=True, widget=SelectWithDisabled)

为了在纯HTML代码中进行澄清，我希望我的代码执行以下操作：

<label for="phase">Phase of the Game:</label><br>
<select name="phase" id="phase" required>
    <option selected disabled>Choose an option</option>
    <option value="opening">Opening</option>
    <option value="midgame">Midgame</option>
    <option value="endgame">Endgame</option>
</select>

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另外：我刚刚想到重写views.py文件中的form.is\u valid（）方法，然后不禁用第一个选项。我会重写它，因此如果选择“默认”值，它将被标记为无效。

from django.http import HttpResponseRedirect
from django.shortcuts import render
from .forms import SettingsForm


def home_view(request):
    if request.method == 'GET':
        form = SettingsForm(request.GET)
        if form.is_valid():
            return HttpResponseRedirect('/play')
    else:
        form = SettingsForm()

    return render(request, "home.html", {
        'form': form
    })