GraphQL突变可在一个请求中接受动态大小和常见标量类型的数组 [英] GraphQL mutation that accepts an array of dynamic size and common scalar types in one request

问题描述

我需要能够创建一个用户并在单个请求中添加喜欢的电影(一个对象数组，其中包含对Movies集合及其对每个电影的个人评价的引用).

I need to be able to create a user and add it's favourite movies (An array of objects with a reference to the Movies collection and his personal rating for each movie) in a single request.

看起来像这样的东西(伪代码)

Something that could look like this (pseudocode)

var exSchema = `
 type Mutation {
    addUser(
        name: String!
        favMovies: [{ movie: String! #ref to movies coll
                      personal_rating: Int! # this is different for every movie
                   }]
    ) : User
 }
...
`

在单个请求中执行此操作的graphql方法是什么?我知道我可以通过多个突变/请求来实现结果，但我想一次完成.

What is the graphql way of doing this in a single request? I know I can achieve the result with multiple mutations/requests but I would like to do it in a single one.

推荐答案

您可以传递这样的数组

var MovieSchema = `
  type Movie {
   name: String
  }
  input MovieInput {
   name: String
  }
  mutation {
   addMovies(movies: [MovieInput]): [Movie]
  }
`

然后在您的突变中，您可以传递类似的数组

Then in your mutation, you can pass an array like

mutation {
  addMovies(movies: [{name: 'name1'}, {name: 'name2'}]) {
    name
  }
}

还没有测试代码，但是您知道了

Haven't tested the code but you get the idea

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