Django-can'；t在模型保存（）中打开图像

当我试图打开它时，我得到：

def upload_path_handler(instance, filename):
    return filename

class SpectacleGallery(models.Model):
    image = models.ImageField(upload_to=upload_path_handler)
    def save(self, *args, **kwargs):
        Image.open(self.image)
        super(SpectacleGallery, self).save(*args, **kwargs)

为什么?？文件是正确的图像。 保存方法中的文件是否不是PIL的好格式

编辑： 以下是我的最终工作版本代码：

IOError at /admin/index/spectacle/1/
cannot identify image file

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Django imageField不是您需要执行类似操作的图像

def save(self, *args, **kwargs):
        # set paths and additional variables
        self_pk = self.pk
        spectacle_id = self.spectacle_id
        spectacle_id_str = str(spectacle_id)
        create_gallery_spectacle_dir(spectacle_id)

        new_filename = generate_image_name_hash()
        new_filename_main = new_filename + '.jpg'
        new_filename_thumb = new_filename + '_thumb.jpg'
        new_file_thumb_path = settings.SPECTACLE_GALLERY_UPLOAD_DIR + '/' + spectacle_id_str + '/' + new_filename_thumb
        new_file_thumb_root_path = settings.SPECTACLE_GALLERY_UPLOAD_PATH + spectacle_id_str + '/' + new_filename_thumb
        new_file_root_path = settings.SPECTACLE_GALLERY_UPLOAD_PATH + spectacle_id_str + '/' + new_filename_main

        if self.image:
            #set new name and thum name
            self.image.name = settings.SPECTACLE_GALLERY_UPLOAD_DIR + '/' + spectacle_id_str + '/' + new_filename_main
            self.image_thumb = new_file_thumb_path

        # image is in form and action is add call the "real" save() method.
        if self.image and not self_pk:
            super(SpectacleGallery, self).save(*args, **kwargs)

        # image is in form and action is edit: get old image info, create variable with image field
        if self.image and self_pk:
            old_img = SpectacleGallery.objects.get(pk=self.pk)
            old_img_instance = old_img.image

        if self.image:
            if self_pk:
                image = old_img_instance
            else:
                image = self.image

        super(SpectacleGallery, self).save(*args, **kwargs) #Call the "real" save() method.

        #if image in form
        if self.image:
            # open file with PIL and convert to RGB
            tmp_file = Image.open(self.image.path)
            if tmp_file.mode != 'RGB':
                tmp_file = tmp_file.convert('RGB')

            #create and save thumbnail
            tmp_file.thumbnail(settings.SPECTACLE_GALLERY_THUMB_SIZE, Image.ANTIALIAS) #make thumbnail
            tmp_file.save(new_file_thumb_root_path, 'JPEG') #save thumbnail

            # if edit delete old images
            if self_pk:
                delete_image_and_thumb(old_img.image, old_img.image_thumb)
            #open and resize original image
            image = Image.open(self.image.path)
            if image.mode != 'RGB':
                image = image.convert('RGB')
            image.thumbnail(settings.SPECTACLE_GALLERY_IMAGE_SIZE, Image.ANTIALIAS) #make thumbnail
            image.save(new_file_root_path,'JPEG', quality=100)

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但是，当我添加新文件时，文件不存在，并且我仍然无法识别图像文件：/n所以图像没有保存到该位置？你对目录有写权限吗？另外，为什么要将upload_设置为upload_path_处理程序？尝试删除它一秒钟，看看是否有帮助。我使用它只返回文件名。我想根据外键id（包括在我的路径中）保存名称和位置完全更改的mt文件。因此，在上载时，我想将原始图像保存到指定路径，调整其大小并使用_thumb后缀保存thumb。@robos85，这似乎合理，但现在您只返回名称，函数需要返回一个包含名称的完全限定路径，以便它也知道在哪里上载文件。如果只给它一个名称，它可能会尝试将其保存到/仅使用该名称。有关更多信息，请参阅此链接。

Image.open(self.image.path)