Created
May 25, 2018 02:48
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GraphQL live example
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| const express = require('express'); | |
| const graphqlHTTP = require('express-graphql'); | |
| const { makeExecutableSchema } = require('graphql-tools'); | |
| const events = [{ | |
| id: 1, | |
| name: 'APIs and IPAs', | |
| description: 'Cool event', | |
| startTime: 'evening', | |
| endTime: 'late evening' | |
| },{ | |
| id: 2, | |
| name: 'Seattle JS Hackers', | |
| description: 'Chill event', | |
| startTime: 'evening', | |
| endTime: 'somewhat later' | |
| }]; | |
| const typeDefs = ` | |
| type Event { | |
| id: ID | |
| name: String! | |
| description: String | |
| startTime: String | |
| endTime: String | |
| } | |
| type Query { | |
| listEvents(name: String!): [Event] | |
| } | |
| input EventInput { | |
| id: ID | |
| name: String! | |
| description: String | |
| startTime: String | |
| endTime: String | |
| } | |
| type Mutation { | |
| saveEvent(event: EventInput): Event | |
| } | |
| `; | |
| const resolvers = { | |
| Query: { | |
| listEvents: (root, { name }, context, ast) => { | |
| if (name) { | |
| const re = new RegExp(name, 'i'); | |
| return events.filter(e => e.name.match(re)) | |
| } | |
| return events; | |
| } | |
| }, | |
| Mutation: { | |
| saveEvent: (root, { event }, context, ast) => { | |
| if (event.id) { | |
| const existingEvent = events.find(e => e.id == event.id); | |
| if (!existingEvent) { | |
| throw new Error('Event not found'); | |
| } | |
| for (const key in event) { | |
| existingEvent[key] = event[key]; | |
| } | |
| return existingEvent; | |
| } else { | |
| event.id = events.length + 1; | |
| events.push(event); | |
| return event; | |
| } | |
| } | |
| } | |
| } | |
| const schema = makeExecutableSchema({ | |
| typeDefs, | |
| resolvers | |
| }) | |
| express() | |
| .use('/graphql', graphqlHTTP({ | |
| graphiql: true, | |
| schema | |
| })) | |
| .listen(8080, ()=>console.log('runnin\'')); |
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