[GraphQL] Use GraphQL's Object Type for Basic Types-优快云博客

本文介绍如何使用GraphQL的Object Types创建基本的GraphQL Schema组件。通过将相关字段分组到特定类型下，如Video或User，可以更清晰地组织数据结构，并在查询Schema时获取这些类型。文中还展示了代码重构过程，使代码更具可读性和意义。

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We can create the most basic components of our GraphQL Schema using GraphQL's Object Types. These types allow us to group related fields together under a specific type, such as a Video or a User, and then allows us to fetch these types when we query our schema. In this video, we'll learn how to write GraphQL Object Types in GraphQL's Schema language, as well as how to create resolvers for them, and ultimately how to query them.

We are going to refactor this code to make it more readable and meanful:

const { graphql, buildSchema } = require('graphql');

const schema = buildSchema(`
    type Query {
        id: ID,
        title: String,
        duration: Int,
        watched: Boolean
    }
    
    type Schema{
        query: Query
    }
`);

const resolvers = {
    id       : () => '1',
    title    : () => 'bar',
    duration : () => 180,
    watched  : true
};

const query = `
    query myFirstQuery {
        id,
        title,
        duration,
        watched
    }
`;

graphql(schema, query, resolvers)
.then((result) => console.log(result))
.catch(console.error)

'id', 'title', 'duration', 'watched' are video related. So we create a Video type.

const { graphql, buildSchema } = require('graphql');

const schema = buildSchema(`
    type Video {
        id: ID,
        title: String,
        duration: Int,
        watched: Boolean
    }
    
    type Query {
        video: Video
    }
    
    type Schema{
        query: Query
    }
`);

const resolvers = {
    video : () => ({
        id       : '1',
        title    : 'bar',
        duration : 180,
        watched  : true
    })
};

const query = `
    query myFirstQuery {
        video {
            id,
            title,
            duration,
            watched
        }
    }
`;

graphql(schema, query, resolvers)
.then((result) => console.log(result))
.catch(console.error)