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Asked: 2026-05-13T16:11:27+00:00

I have an image field of type transformable and a typical ImageToDataTransformer class. 99%

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I have an image field of type transformable and a typical ImageToDataTransformer class. 99% of the time that’s perfect and great shortcut, but just occasionally I find myself transforming the managed object back to NSData (knowing that if it wasn’t for the ImageToDataTransformer I would have got NSData in the first place). As these operations are fairly expensive on an iPhone, is there a way of avoiding the transformer on the rare occasions I just want the NSdata ?

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1 Answer

  1. Editorial Team

    Use the transformable attribute, but no transformer. Then, handle the transformation manually.

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