Dynamic Schema(s)

[dbettin]

• Are there plans to support the schema language?
• Is it possible to generate a schema dynamically?

[mhallin]

Hello!

I haven't given much thought to the schema language. What would be your use case for schema language support? Are there any tools that produce or consume this representation?

What do you mean with "generate a schema dynamically"? All exposed types today must implement the GraphQLType trait, which means that a schema is fixed at compilation time.

[Mange]

Some people respond with different schemas depending on auth context and whatever. Maybe @dbettin is referring to that?

[dbettin]

We are planning to build graphql schema designers. These schemas could live in a database for example. So they would not be able to be statically defined in code.

[mhallin]

I see. Unfortunately, I don't think this library is suited for that use case. In order to do this with Juniper, you would need to bypass all functionality provided by implementing the GraphQLType trait. It would be possible to build a meta-model of the schema using the API in https://github.com/mhallin/juniper/blob/master/src/schema/meta.rs, but you would need to implement a custom query executor that only relied on your database model.

To answer @Mange's question, that should be possible by using different RootNode instances depending on e.g. auth context.

[dynaxis]

@dbettin so could you share me which route you took for your case? I have a similar requirement.