鹡鸰变化图像信号

Question

这是我裁剪原始图像的信号。 它在上传时效果很好，但是当我在'wagtail.images.views.images.edit'中更改图像时不起作用。

找到解决方案： 更新

/wagtail.hooks.py/

@receiver(post_save, sender=get_image_model())
def resize_images_on_upload_or_edit(sender, instance, created=False, **kwargs):
    if (instance.width and instance.height) > 2000:
        old = sender.objects.get(pk=instance.pk)
        if created or old:
            croped_image = instance.get_rendition('max-2000x2000|jpegquality-80')
            croped_file = croped_image.file.path
            instance.width = croped_image.width
            instance.height = croped_image.height
            instance.file_size = os.path.getsize(croped_file)
            original_file = instance.file.path
            instance.save()
            try:
                os.rename(croped_file, original_file)
            except FileExistsError:
                os.replace(croped_file, original_file)
                

Answer 1

如果您希望代码在编辑现有图像时运行，而不是仅在创建时运行，则应删除

if created:

检查。