如何在字段定义之外的 Django imagekit 中指定图像规格?

How to specify image specs in Django imagekit outside the field definition?

我有以下模型定义:

class Photo(models.Model) :
    def get_gallery_path(self, filename):
        ext = filename.split('.')[-1]
        filename = "%s.%s" % (uuid.uuid4(), ext)
        return 'static/uploads/images/gallery/' + filename

    uploader = models.ForeignKey(User, on_delete=models.CASCADE)
    date = models.DateField(default=date.today)
    image = ProcessedImageField(default='', verbose_name='Image', upload_to=get_gallery_path, processors=[ResizeToFill(100, 50)], format='JPEG', options={'quality': 60})
    caption = models.CharField(max_length=200, null=True, blank=True)

    def __str__(self):
        return str(self.id) + str(self.uploader.username) + str(self.date)

    class Meta:
        verbose_name_plural = "Photos"
        verbose_name = "Photo"

我使用django-imagekit修改上传的图片。但如您所见,我必须在 image 字段中内联说明所有属性和选项。当我指定许多属性时,这会使代码难以阅读。

有没有办法在 models.py 文件中单独定义属性和选项,以便我可以将其用于所有图像字段。

您可以简单地利用字典解包。

例如定义你的字典processed_image_field_specs:

def get_gallery_path(filename):
  ext = filename.split('.')[-1]
  filename = "%s.%s" % (uuid.uuid4(), ext)
  return 'static/uploads/images/gallery/' + filename

processed_image_field_specs = {
  'default': '', 
  'verbose_name': 'Image', 
  'upload_to': get_gallery_path, 
  'processors': [ResizeToFill(100, 50)], 
  'format': 'JPEG', 
  'options': {'quality': 60}
}

现在解压字典,为 ProcessedImageField:

提供命名参数
class Photo(models.Model) :
    ...
    image = ProcessedImageField(**processed_image_field_specs)
    ...