Can you use `useFragment` with a type that doesn't have an id?

[patrick91]

Hi, I'm trying useFragment with a query that looks like this:

{
  flyers {
    edges { ... }   
    someStats { ... }
  }
}

I'd like to split the query this way:

{
  flyers {
    ...FlyersEdgesFragment
    ...FlyersEdgesStats
  }
}

but it doesn't seem to work 😊 Is my understanding correct that useFragment "only" works with types that have an ID?

[bignimbus]

Hi @patrick91 👋 miss you! A way to identify the entity object in the cache is needed for useFragment. See https://www.apollographql.com/docs/react/api/react/hooks#usefragment, specifically, the from attribute. So if you can identify a fragment by its type and an id, that's probably the most straightforward way. But if there are other valid identifiers that could be used (in combination with keyFields) then that should work too. Hope that helps!

[patrick91]

@bignimbus I was pretty tired when I was trying the useFragment hook, and I was expecting something more magic.

I've ended up using fragments, but passing the data down directly to the component using the fragment, since I don't have a unique identifier for the flyers field 😊

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