如何使用额外的模型字段Django输出输入表单数据

from django.db import models

class MyModel(models.Model):
    extra_field = models.CharField(max_length=100)
    # 其他字段...

from django import forms
from .models import MyModel

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

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            form.save()  # 保存数据到数据库
            # 其他操作...
    else:
        form = MyForm()
    
    return render(request, 'my_template.html', {'form': form})

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