Update Learn-Schema.md -- Improve Union Type Examples #635
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Add `__typename` to the query to show that union types can still be differentiated on the client and add a second example showing common fields being queried in one spot.
stubailo
reviewed
Jan 1, 2019
| @@ -311,6 +311,7 @@ In this case, if you query a field that returns the `SearchResult` union type, y | |||
| # { "graphiql": true} | |||
| { | |||
| search(text: "an") { | |||
| __typename | |||
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Can we add something to the text regarding this?
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@stubailo That should be all set now.
|
Thanks! |
Dipeshwagle
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to Dipeshwagle/graphql.github.io
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Aug 18, 2020
* Update Learn-Schema.md Add `__typename` to the query to show that union types can still be differentiated on the client and add a second example showing common fields being queried in one spot. * Add note about the use of `__typename`
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This PR adds
__typenameto the query to show that union types can still be differentiated on the client and adds a second example showing common fields being queried in one spot.There is another way to accomplish the same thing that I pointed out in this PR using fragments. Ultimately I felt like the solution targeting the common interface was cleaner and adding a note about Fragments might feel cluttered, but we can add this example if desired as well:
{ search(text: "an") { __typename ... on Human { ...CharacterProps height } ... on Droid { ...CharacterProps primaryFunction } ... on Starship { name length } } } fragment CharacterProps on Character { name }