def preview_image(instance, sender, *args, **kwargs):
"""Updates book previews if the rating has changed"""
if not ENABLE_PREVIEW_IMAGES or sender not in (Review, ReviewRating):
return
changed_fields = instance.field_tracker.changed()
if len(changed_fields) > 0:
edition = instance.book
generate_edition_preview_image_task.delay(edition.id)
def preview_image(instance, *args, **kwargs):
"""create preview image on book create"""
if not ENABLE_PREVIEW_IMAGES:
return
changed_fields = {}
if instance.field_tracker:
changed_fields = instance.field_tracker.changed()
if len(changed_fields) > 0:
generate_edition_preview_image_task.delay(instance.id)