带有突变图酷/ graphql的重复项目答案

【问题标题】：duplicated items with mutation graph cool / graphql带有突变图酷/ graphql的重复项目
【发布时间】：2018-06-24 13:04:17
【问题描述】：

我正在使用graphcool / graphql 并想将Player 添加到Team。我的架构如下所示：

type Team @model {
  id: ID! @isUnique
  name: String
  players: [Player!]! @relation(name: "TeamPlayers")
  fixtures: [Fixture!]! @relation(name: "TeamFixtures")
  results: [Result!]! @relation(name: "TeamResults")
}

type Player @model {
    id: ID! @isUnique
    name: String!
    gamesPlayed: Int!
    goalsScored: Int!
    yellowCards: Int!
    redCards: Int!
    photo: String!
    team: Team! @relation(name: "TeamPlayers")
}

我正在做以下突变：

mutation {
      createPlayer(
      name: "Peter Flanagan",
      gamesPlayed: 1,
      yellowCards: 0,
      redCards: 1,
      goalsScored: 4,
      photo: "http://cdn2-www.craveonline.com/assets/uploads/2017/02/bret1.png",
      team: {
        name: "Man United"
      }
    ) {
        id
      }
}

这按预期工作，但如果我进行另一个突变，如下面的那个，第二个团队，也称为Man United，带有一个新的id。

mutation {
      createPlayer(
      name: "Eric Cantona",
      gamesPlayed: 1,
      yellowCards: 0,
      redCards: 1,
      goalsScored: 4,
      photo: "http://cdn2-www.craveonline.com/assets/uploads/2017/02/bret1.png",
      team: {
        name: "Man United"
      }
    ) {
        id
      }
}

谁能告诉我如何避免这个问题并将Players 添加到同一个Team？

【问题讨论】：

标签： javascript graphql graphcool

【解决方案1】：

这样，您始终可以通过创建新的Player 来创建新的Team。如果您想将玩家连接到团队。先创建team，得到teamId。使用teamId，您可以创建像这样连接到团队的突变：

mutation {
  createPlayer(
  name: "Peter Flanagan",
  gamesPlayed: 1,
  yellowCards: 0,
  redCards: 1,
  goalsScored: 4,
  photo: "http://cdn2-www.craveonline.com/assets/uploads/2017/02/bret1.png",
  teamId: "TEAM_ID"
) {
    id
  }
}

【讨论】：