ImageField覆盖具有相同名称的图像文件

是的，这对我也很重要。这就是我所做的。

模型：

from app.storage import OverwriteStorageclass Thing(models.Model):    image = models.ImageField(max_length=SOME_CONST, storage=OverwriteStorage(), upload_to=image_path)

还定义在

models.py

def image_path(instance, filename):    return os.path.join('some_dir', str(instance.some_identifier), 'filename.ext')

在另一个文件中，

storage.py

from django.core.files.storage import FileSystemStoragefrom django.conf import settingsimport osclass OverwriteStorage(FileSystemStorage):    def get_available_name(self, name):        """Returns a filename that's free on the target storage system, and        available for new content to be written to.        Found at http://djangosnippets.org/snippets/976/        This file storage solves overwrite on upload problem. Another        proposed solution was to override the save method on the model        like so (from https://pre.djangoproject.com/ticket/11663):        def save(self, *args, **kwargs): try:     this = MyModelName.objects.get(id=self.id)     if this.MyImageFieldName != self.MyImageFieldName:         this.MyImageFieldName.delete() except: pass super(MyModelName, self).save(*args, **kwargs)        """        # If the filename already exists, remove it as if it was a true file system        if self.exists(name): os.remove(os.path.join(settings.MEDIA_ROOT, name))        return name

显然，这些是这里的示例值，但是总体而言，这对我来说效果很好，并且根据需要进行修改应该非常简单。