Postgraphile: Status of @nonNull smart comment on computed fields

[srghma]

I'm submitting a ...

• [ ] bug report
• [ ] feature request
• [x] question

PostGraphile version: 4.0.1

Summary:
Here https://www.graphile.org/postgraphile/why-nullable/#what-about-computed-fields it's said

I'd be happy to accept a Pull Request that adds functionality marking a function as non-nullable via a smart comment (e.g. COMMENT ON FUNCTION foo_func(foo) IS E'@nonNull';) - do raise an issue if this is of interest to you.

Is this smart comment implemented already?

[benjie]

Someone has implemented a plugin; see this thread:

https://github.com/graphile/postgraphile/issues/818

[srghma]

also found https://github.com/graphile-contrib/pg-non-null

[benjie]

https://github.com/graphile/graphile-engine/pull/352 This is introducing the makeChangeNullabilityPlugin too; which you can use to set certain fields nullable (true) or non-nullable (false); e.g.:

makeChangeNullabilityPlugin({
  User: {
    email: true,
    id: false,
  },
  Forum: {
    secret: true,
  }
})

(But I prefer the smart comment approach.)