def image_resize(file_path, key_type, key_id):
"""
key_type should be one of ImageKeyType.choices
"""
if not file_path:
return ''
elif isinstance(file_path, FieldFile):
file_path = file_path.path
elif not isinstance(file_path, str):
return ''
key_type = key_type.upper()
cache_key = get_cache_key(key_type, key_id)
url = cache.get(cache_key)
if url: return url
try:
image = Image.objects.only('file').get(key_type=key_type, key_id=key_id)
if not os.path.exists(image.file.path):
image.regenerate()
except Image.DoesNotExist:
image = Image(key_type=key_type, key_id=key_id)
try:
image.save(file_path)
except IntegrityError:
image = Image.objects.only('file').get(key_type=key_type, key_id=key_id)
cache.set(cache_key, image.file.url, IMAGE_CACHE_TIMEOUT)
return image.file.url
def get(self, request, key_type, key_id):
key_type = key_type.upper()
if key_type not in ImageKeyType.choices_dict.keys():
raise Http404
try:
key_id = base36_to_int(key_id)
except ValueError:
raise Http404
image = get_object_or_404(Image, key_type=key_type, key_id=key_id)
if not os.path.exists(image.file.path):
image.regenerate()
cache_key = get_cache_key(key_type, key_id)
cache.set(cache_key, image.file.url)
if DEBUG:
return serve(request, image.file.url, document_root=BASE_DIR)
return redirect(image.file.url)
def manga_post_save(instance, **kwargs):
Image.objects.filter(key_type=ImageKeyType.ACCOUNT_AVATAR, key_id=instance.id).delete()
cache.delete(get_cache_key(ImageKeyType.ACCOUNT_AVATAR, instance.id))