在 GraphQL Schema 中定义地图对象的最佳方式?

问题描述

我尝试用对象数组映射一个键字符串.

I try to map a key string with arrays of Objects.

我可以创建一个简单的对象，但我想在这些数组中轻松添加一个对象.地图对象非常适合执行此操作.

I can create a simple Object but i want to add easily an object in these arrays. The Map Object is perfect to do this.

问题:我不知道如何为 GraphQL 定义类型映射 :'(

Problem: I dont know how to define the Type Map for GraphQL :'(

@ObjectType()
export class Inventaire
  @Field()
  _id: string;

 @Field()
  stocks: Map<string, Article[]>;
}

推荐答案

GraphQL 是一种强类型语言，不提供任何开箱即用的 map 类型.键值对的 JSON blob 没有强大的架构，所以你不能有这样的东西:

GraphQL is a strongly-typed language, and does not provide any kind of map type out of the box. A JSON blob of key-value pairs do not have a strong schema, so you can't have something like this:

{
    key1: val1,
    key2: val2,
    key3: val3,
    ...
}

但是，您可以定义一个 GraphQL Schema 以具有键值元组类型，然后定义您的属性以返回这些元组的数组.

However, you can define a GraphQL Schema to have a key-value tuple type, and then define your property to return an array of those tuples.

type articleMapTuple {
     key: String
     value: Article
}

type Inventaire {
     stocks: [articleMapTuple]
}

那么您的返回类型将如下所示:

Then your return types would look something like this:

    data [
    {
        key: foo1,
        value: { some Article Object}
    },
    {
        key: foo2,
        value: { some Article Object}
    },
    {
        key: foo3,
        value: { some Article Object}
    },
]

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