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681527fa9d
This needs to be known earlier, when registering the source group, so we do it in `contribute_to_class` instead. Closes #188.
21 lines
685 B
Python
21 lines
685 B
Python
from ...cachefiles import ImageCacheFile
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class ImageSpecFileDescriptor(object):
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def __init__(self, field, attname, source_field_name):
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self.attname = attname
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self.field = field
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self.source_field_name = source_field_name
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def __get__(self, instance, owner):
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if instance is None:
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return self.field
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else:
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source = getattr(instance, self.source_field_name)
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spec = self.field.get_spec(source=source)
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file = ImageCacheFile(spec)
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instance.__dict__[self.attname] = file
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return file
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def __set__(self, instance, value):
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instance.__dict__[self.attname] = value
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