Graphql Union using generated types

emmanu31last year

3

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  paulpopuslast year

  What are you trying to get exactly? It might be easier to recommend something with the full picture

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  emmanu31last year

  So we have 3 schemas (collections), blogs, podcasts and videos, all of them shared common fields, so I want to create a union type/schema (e.g. type Post = Blog | Podcast | Video) so it can be exposed in the graphql api url and consumed by client.

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  paulpopuslast year

  You would have to make a new custom graphql endpoint

  
  
  

  and construct a new type for yourself using the graphQL object passed via the handler with

  https://graphql.org/graphql-js/type/#graphqluniontype
  
  

  something akin to

  
  

  new GraphQL.GraphQLUnionType()

  
  
  

  for the types you can get the generated ones from your

  payload.collections['blog'].graphQL.types

  instance to use as types here

  
  

  types: [DogType, CatType],

  
  
  

  I wrote a guide here on how to extend the graphql API

  https://nouance.io/articles/how-to-extend-graphql-in-payload-with-custom-queries-mutations-and-re-usable-types
  
  

  Here's the guide in payload docs

  https://payloadcms.com/docs/graphql/extending