我不确定这是否完全与django有关，但是如果有人能帮助我，我将不胜感激！我在用下面的代码生成webp文件时遇到了麻烦

from io import BytesIO
from PIL import Image
import requests

我有以下型号

class UserImage(models.Model):     
     user_provided_image = VersatileImageField(upload_to=folder10, null=True, blank=True)     
  nextgen_image = models.FileField(upload_to=folder10,null=True, blank=True) #for WebP images

我正在创建一个webp文件，这段代码可以工作，但是它将它保存到了项目根目录的文件中，我不知道如何将它保存到模型的FileField（即nextgen_image）中

def create_webp_image(sender, instance, *args, **kwargs):

    image_url = instance.image.thumbnail['1920x1080'].url    

    try:
        response = requests.get(image_url, stream=True)
        path = image_url

    except: #local env
        path = "http://localhost:8000" + image_url
        response = requests.get(path, stream=True)

    img = Image.open(BytesIO(response.content))

    #build file path
    position = path.rfind("/") + 1
    newpath = path[0:position]
        
    #build file name
    image_name = path[position:]
    name_of_file = image_name.split('.')[0] + ".webp"
       
    #this creates the webp file
    img.save(name_of_file,"webp")

    #save image to model
    #instance.nextgen_image = ?

post_save.connect(create_webp_image, sender=UserImage)

谢谢！