Django-rest-framework: JSON encoder should fail for integer values outside "interop range".

[tomchristie]

It is un-robust to use integer values above (2^53)-1 in JSON.

Where we have model fields corresponding to big integers, we should ensure that the corresponding serializer classes have appropriate maximum values. - Revised.

http://stackoverflow.com/questions/307179/what-is-javascripts-highest-integer-value-that-a-number-can-go-to-without-losin

[dczech]

That's fine as long as you also remove (or adjust) hardcoded mappings between AutoField and integers in rest_framework.schemas. get_path_fields

[tomchristie]

Aside: Presumably this is based on a real case that you've hit, with more than 9 million billion records?

Less obvious what we'd do with the path fields - they would work just fine, it's just that the resulting data that they'd return would include id fields with lost precision (assuming a JS client).

Revised option (this makes even more sense on re-thinking)... Make no changes in the serializers, but ensure that the JSON encoder checks integers are within the interop range specified in https://tools.ietf.org/html/rfc7159 and raises a hard error if passed integer values outside that range.

Note that when such software is used, numbers that are integers and
are in the range [-(2**53)+1, (2**53)-1] are interoperable in the
sense that implementations will agree exactly on their numeric
values.

[dczech]

Background: I have to deal with database with big integer ids and I have to serialize them as strings so they can be handled correctly in javascript.
Generally the problem is not in framework and serializers - where I can adjust the serialization process to my needs - but in documentation API (maybe I haven't said it clearly before). #5011 solves the problem and I can't figure out another solution.

[tomchristie]

We should also consider putting a min_value/max_value on allowable integer ranges in schemas.

[tomchristie]

Closing as per #6718