Implement nullvalue

[yen223]

Resolves #118

[syrusakbary]

I will happily merge this if we can add more tests like in the ref implementation!
https://github.com/graphql/graphql-js/pull/544/files :)

[waxisien]

@yen223 Do you plan to continu this PR? That's a very useful feature.

[mrshankly]

What's the status of this pull request? This would be very helpful for us.

[rok-povsic]

This feature would be very useful. Right now, I have to create another mutation that's used only for setting argument object fields to null.

[altaurog]

I will happily merge this if we can add more tests like in the ref implementation!
https://github.com/graphql/graphql-js/pull/544/files :)

@syrusakbary which, specifically, of the tests there would you like implemented? It seems to me that project has a broader set of tests overall than this one and the tests @yen223 added are consistent with the scope of the existing tests.

[samlll42-github]

Any update on this? thanks

[ArnaudPel]

Joining the crowd of onlookers waiting for updates on this PR. Thanks @syrusakbary

[kkitay]

likewise, would very much like this to be possible

[hugos94]

Joining the crowd of onlookers waiting for updates on this PR. Thanks @syrusakbary

[brabeji]

Joining the crowd of onlookers waiting for updates on this PR. Thanks @syrusakbary

Maybe the https://github.com/graphql-python/graphql-core/issues/249 release might resolve this issue, @jkimbo?

[jkimbo]

@brabeji yes the graphql-core v3 (#249) will resolve this issue. Graphql-core v3 is going to be graphql-core-next which is a complete rewrite bringing it up to feature parity with graphql.js