Is there a right way to validate mutation input?

[crtr0]

I am leveraging the crud convenience method to define mutations for my GraphQL API:

schema.mutationType({
    definition(t) {
      t.crud.createOneActivity()
    }
})

However, I cannot figure out how to define custom validation rules (i.e. checking email addresses, minimum length for fields, etc) that lie outside of the type safety provided by GraphQL.

Does anyone have a recommended approach for this?

[beeplin]

right now you can use https://github.com/lvauvillier/nexus-plugin-shield.

some better solutions like graphql-nexus/nexus#661 is under discussion.

I hope one day we will have something like this:

t.crud.createOneUser({
  shield: some_shield_rule
})

or

t.field.name({
  shield: some_shield_rule
})

This will use shield's rule cache mechanism for the sake of performance.