如何使用django表单/模型来表示字段之间的选择？

python manage.py startapp myapp

from django.db import models

class MyModel(models.Model):
    CHOICES = (
        ('A', 'Option A'),
        ('B', 'Option B'),
        ('C', 'Option C'),
    )
    field1 = models.CharField(max_length=10, choices=CHOICES)
    field2 = models.CharField(max_length=10, choices=CHOICES)

from django import forms
from .models import MyModel

class MyForm(forms.ModelForm):
    class Meta:
        model = MyModel
        fields = ['field1', 'field2']

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    form = MyForm()
    return render(request, 'myapp/my_template.html', {'form': form})

<form method="post">
    {% csrf_token %}
    {{ form.as_p }}
   <button type="submit">Submit</button>
</form>