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Break rendition lookup logic out of AbstractRendition.get_rendition() into a new 'lookup_rendition' method

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This commit is contained in:
Andy Babic 2022-03-03 11:31:00 +00:00 committed by Matt Westcott
parent e34ffa93f9
commit aa4cc9d51e
1 changed files with 10 additions and 8 deletions
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18
wagtail/images/models.py
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@ -331,25 +331,27 @@ class AbstractImage(ImageFileMixin, CollectionMember, index.Indexed, models.Mode
rendition_cache_key = Rendition.construct_cache_key(
self.id, cache_key, filter.spec
)
cached_rendition = renditions_cache.get(rendition_cache_key)
if cached_rendition:
return cached_rendition
except InvalidCacheBackendError:
renditions_cache = None
rendition_cache_key = None
try:
rendition = self.renditions.get(
filter_spec=filter.spec,
focal_point_key=cache_key,
)
rendition = self.lookup_rendition(filter)
except Rendition.DoesNotExist:
rendition = self.generate_rendition(filter)
if renditions_cache:
if renditions_cache and rendition_cache_key:
renditions_cache.set(rendition_cache_key, rendition)
return rendition
def lookup_rendition(self, filter: "Filter") -> "AbstractRendition":
cache_key = filter.get_cache_key(self)
return self.renditions.get(
filter_spec=filter.spec,
focal_point_key=cache_key,
)
def generate_rendition(self, filter):
if isinstance(filter, str):
filter = Filter(spec=filter)