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33 lines
1.3 KiB
Python
33 lines
1.3 KiB
Python
from django.core.exceptions import ImproperlyConfigured
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from django.utils.importlib import import_module
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from imagekit.imagecache.base import PessimisticImageCacheBackend, NonValidatingImageCacheBackend
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_default_image_cache_backend = None
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def get_default_image_cache_backend():
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"""
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Get the default image cache backend. Uses the same method as
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django.core.file.storage.get_storage_class
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"""
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global _default_image_cache_backend
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if not _default_image_cache_backend:
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from ..settings import DEFAULT_IMAGE_CACHE_BACKEND as import_path
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try:
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dot = import_path.rindex('.')
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except ValueError:
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raise ImproperlyConfigured("%s isn't an image cache backend module." % \
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import_path)
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module, classname = import_path[:dot], import_path[dot + 1:]
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try:
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mod = import_module(module)
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except ImportError, e:
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raise ImproperlyConfigured('Error importing image cache backend module %s: "%s"' % (module, e))
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try:
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cls = getattr(mod, classname)
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_default_image_cache_backend = cls()
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except AttributeError:
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raise ImproperlyConfigured('Image cache backend module "%s" does not define a "%s" class.' % (module, classname))
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return _default_image_cache_backend
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