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Generalize get_class util

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This commit is contained in:
Matthew Tretter 2013-01-31 22:01:01 -05:00
parent 2ca4e4b6c2
commit bf1685dbfb
1 changed files with 7 additions and 7 deletions
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14
imagekit/utils.py
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@ -322,23 +322,23 @@ def prepare_image(img, format):
return img, save_kwargs
def get_class(path, desc):
def get_by_qname(path, desc):
try:
dot = path.rindex('.')
except ValueError:
raise ImproperlyConfigured("%s isn't a %s module." % (path, desc))
module, classname = path[:dot], path[dot + 1:]
module, objname = path[:dot], path[dot + 1:]
try:
mod = import_module(module)
except ImportError, e:
raise ImproperlyConfigured('Error importing %s module %s: "%s"' %
(desc, module, e))
try:
cls = getattr(mod, classname)
return cls
obj = getattr(mod, objname)
return obj
except AttributeError:
raise ImproperlyConfigured('%s module "%s" does not define a "%s"'
' class.' % (desc[0].upper() + desc[1:], module, classname))
raise ImproperlyConfigured('%s module "%s" does not define "%s"'
% (desc[0].upper() + desc[1:], module, objname))
_singletons = {}
@ -346,7 +346,7 @@ _singletons = {}
def get_singleton(class_path, desc):
global _singletons
cls = get_class(class_path, desc)
cls = get_by_qname(class_path, desc)
instance = _singletons.get(cls)
if not instance:
instance = _singletons[cls] = cls()