在django中更新不带表单的ImageField

from django.db import models

class MyModel(models.Model):
    image = models.ImageField(upload_to='images/', blank=True, null=True)

from django.core.files.storage import default_storage

def update_image(request, pk):
    my_object = MyModel.objects.get(pk=pk)

    # 获取已有图像的路径
    old_image_path = my_object.image.path

    # 删除已有的图像文件
    default_storage.delete(old_image_path)

    # 获取新的图像文件
    new_image_file = request.FILES['image']

    # 保存新的图像文件到指定路径
    new_image_path = default_storage.save('images/' + new_image_file.name, new_image_file)

    # 更新模型中的ImageField
    my_object.image = new_image_path
    my_object.save()

    return HttpResponse('Image updated successfully')

<img src="{{ my_object.image.url }}" alt="Image">