'Backup core data, one entity only

My application requires some kind of data backup and some kind of data exchange between users, so what I want to achieve is the ability to export an entity but not the entire database.

I have found some help but for the full database, like this post:

Backup core data locally, and restore from backup - Swift

This applies to the entire database.

I tried to export a JSON file, this might work except that the entity I'm trying to export contains images as binary data.

So I'm stuck.

Any help exporting not the full database but just one entity or how to write a JSON that includes binary data.

Solution 1:^[1]

Take a look at protobuf. Apple has an official swift lib for it

https://github.com/apple/swift-protobuf

Protobuf is an alternate encoding to JSON that has direct support for serializing binary data. There are client libraries for any language you might need to read the data in, or command-line tools if you want to examine the files manually.

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Solution 1

'Backup core data, one entity only

Solution 1:[1]

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Solution 1:^[1]