文件：‘AttributeError’对象没有属性'_committed‘。重命名图像django模型

from django.db import models

class YourModel(models.Model):
    old_image = models.ImageField(upload_to='images/')
    new_image_path = models.CharField(max_length=255, blank=True)

from django.db.models.signals import pre_save
from django.dispatch import receiver
from django.core.files import File
import os

@receiver(pre_save, sender=YourModel)
def rename_image(sender, instance, **kwargs):
    if instance.pk:
        old_instance = YourModel.objects.get(pk=instance.pk)
        if old_instance.old_image != instance.old_image:
            # 删除旧的图像文件
            if os.path.isfile(old_instance.old_image.path):
                os.remove(old_instance.old_image.path)
            # 重命名新的图像文件
            new_image_path = 'new_images/' + instance.old_image.name
            instance.new_image_path = new_image_path
            instance.old_image.name = new_image_path

from django.shortcuts import render
from .forms import YourModelForm

def upload_image(request):
    if request.method == 'POST':
        form = YourModelForm(request.POST, request.FILES)
        if form.is_valid():
            instance = form.save(commit=False)
            instance.save()
            return render(request, 'success.html')
    else:
        form = YourModelForm()
    return render(request, 'upload.html', {'form': form})

<img src="{{ your_model_instance.new_image_path }}" alt="New Image">