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【Amplify】graphqlでid以外を指定してupdateできるようにschemeを編集する

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#解決策
player というtypeを用いroomIdが一致するデータのみ更新する例をあげる。
scheme の type と key を下記のように編集する


type Player 
@model(subscriptions:{ onCreate:["onCreatePlayer"], onDelete:["onDeletePlayer"],onUpdate: ["onUpdatePlayer","onUpdatePlayerByRoomId(roomId:String!)"]})
@key(name: "byRoomId", fields: ["roomId", "id"], queryField: "getPlayerByRoomId")
{
  id: ID
  userId: String
  roomId: String
  userName: String
}

その後生成されるAPIを使ってこう叩く

 await API.graphql(
    graphqlOperation(updatePlayer, { input: newPlayers })
 );

result に入れることで更新後の結果を取得することもできる。

const result = await API.graphql(
    graphqlOperation(updatePlayer, { input: newPlayers })
 );
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