在graphql中实现多个接口 [英] Implement multiple interfaces in graphql

问题描述

我正在使用中继编译器，但不允许我使用具有多个接口的类型来编译模式.我做了一个小测试项目:

I am using the relay compiler and it is not letting me compile a schema with a type that implements multiple interfaces. I made a small test project:

package.json

package.json

{
  "scripts": {
    "relay": "relay-compiler --src ./ --schema schema.graphqls"
  },
  "dependencies": {
    "react-relay": "1.5.0"
  },
  "devDependencies": {
    "relay-compiler": "1.5.0"
  }
}

schema.graphqls

schema.graphqls

interface First {
    a: String
}

interface Second {
    b: String
}

type Something implements First, Second {
    a: String
    b: String
}

test.js

import { graphql } from "react-relay";

graphql`fragment Test_item on Something {
    a
    b
}`;

如果使用npm run relay运行此程序(在npm安装之后)，则会收到错误消息:

If you run this with npm run relay (after npm install) you get the error:

Error: Error loading schema. Expected the schema to be a .graphql or a .json
file, describing your GraphQL server's API. Error detail:

GraphQLError: Syntax Error: Unexpected Name "Second"

有任何想法为什么会发生这种情况?

Any ideas why this is happening?

推荐答案

对于多个接口，您应该使用&号代替逗号.参见此处: http://facebook.github.io/graphql/draft/#sec-界面

You should use an ampersand instead of a comma for multiple interfaces. See here: http://facebook.github.io/graphql/draft/#sec-Interfaces

type Something implements First & Second

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