从Django模型的关联图像列表中选择最喜欢的图像

from django.db import models

class User(models.Model):
    name = models.CharField(max_length=100)

class Image(models.Model):
    user = models.ForeignKey(User, related_name='images', on_delete=models.CASCADE)
    image_file = models.ImageField(upload_to='images/')
    is_favorite = models.BooleanField(default=False)

    def save(self, *args, **kwargs):
        if self.is_favorite:
            # 如果设置为最喜欢的图片，取消之前设置为最喜欢的图片
            Image.objects.filter(user=self.user, is_favorite=True).update(is_favorite=False)
        super().save(*args, **kwargs)

from django.shortcuts import render, get_object_or_404
from .models import User, Image

def set_favorite_image(request, user_id, image_id):
    user = get_object_or_404(User, id=user_id)
    image = get_object_or_404(Image, id=image_id, user=user)
    image.is_favorite = True
    image.save()
    return render(request, 'user_profile.html', {'user': user})

from django.db import transaction

@transaction.atomic
def set_favorite_image(request, user_id, image_id):
    # ... 同上 ...