Django模型如何为一个字段上传多个文件

from django.db import models

class MyModel(models.Model):
    files = models.ManyToManyField('MyFileModel')

class MyFileModel(models.Model):
    file = models.FileField(upload_to='files/')

python manage.py makemigrations
python manage.py migrate

from django.shortcuts import render
from .models import MyModel, MyFileModel

def upload_files(request):
    if request.method == 'POST':
        files = request.FILES.getlist('files')
        my_model = MyModel.objects.create()
        for file in files:
            my_file_model = MyFileModel.objects.create(file=file)
            my_model.files.add(my_file_model)
        return render(request, 'success.html')
    return render(request, 'upload.html')

<form method="post" enctype="multipart/form-data">
    {% csrf_token %}
    <input type="file" name="files" multiple>
    <input type="submit" value="Upload">
</form>