How to define custom GraphQL type?

[iBobik]

Where to define that GraphQL type?

publishedAt = def.dateTimeColumn().typeAlias('CustomDateTime')

https://docs.contember.com/reference/engine/schema/columns#changing-column-type

I want to use jsonColumn and specify how that object should look like, so Contember will enforce it and TypeScript on the frontend will know what to expect.

[matej21]

Hi,

Unfortunately, Contember does not currently support defining the schema of a type alias, particularly for a jsonColumn. What this means is that it will only produce a GraphQL scalar alias that behaves the same as the original type.

However, this setup does allow you to treat the type alias differently on the client-side using your GraphQL client. For instance, you can use the "scalars" config in GraphQL Code Generator to achieve this.