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  • [GraphQL] Use GraphQL's List Type for Collections

    In order to handle collections of items in a GraphQL Schema, GraphQL has a List Type. In this video, we’ll learn the syntax for specifying a List of items in a GraphQL Schema.

    Quey list of videos:

    const { graphql, buildSchema } = require('graphql');
    
    const schema = buildSchema(`
        type Video {
            id: ID,
            title: String,
            duration: Int,
            watched: Boolean
        }
        
        type Query {
            video: Video,
            videos: [Video]
        }
        
        type Schema{
            query: Query
        }
    `);
    
    const videos = [
        {
            id       : '1',
            title    : 'react',
            duration : 180,
            watched  : true
        },
        {
            id       : '2',
            title    : 'relay',
            duration : 230,
            watched  : false
        }
    ];
    
    const resolvers = {
        video : () => ({
            id       : '1',
            title    : 'bar',
            duration : 180,
            watched  : true
        }),
        videos: () => videos
    };
    
    const query = `
        query myFirstQuery {
            videos {
                id,
                title,
                duration,
                watched
            }
        }
    `;
    
    graphql(schema, query, resolvers)
    .then((result) => console.log(JSON.stringify(result, null, 2)))
    .catch(console.error)
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  • 原文地址:https://www.cnblogs.com/Answer1215/p/6228265.html
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