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reactjsgraphqlapollo-client

Apollo Client id nullable field

I'm using GraphQL with Apollo Client in my react project. The issue is when I'm fetching data of elements with the field id,

For example: the schema

Person {
id
name
}

In case the id is nullable and has an empty value, the result is an array of Person objects but with the same Person.

Is id a special field in Apollo client cache implementation?

Solution

  • Yes it is, you can specify in your frontend a specific cache id if you need too, but this field should be unique.

    Custom Cache ID https://www.apollographql.com/docs/react/caching/cache-configuration/#customizing-cache-ids

    If you field is not unique, and you don't have a id, you can create a fake id from other fields of this ressource in a type resolver, like a hash with the name, and a other field

    Hope my anwser help you :)