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Firebase backed GraphQL schema
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| import firebase from 'firebase' | |
| import { filter, map } from 'lodash' | |
| import { makeExecutableSchema } from 'graphql-tools' | |
| firebase.initializeApp({ | |
| databaseURL: 'https://grafire-b1b6e.firebaseio.com', | |
| }) | |
| const mapSnapshotToEntity = snapshot => ({ id: snapshot.key, ...snapshot.val() }) | |
| const mapSnapshotToEntities = snapshot => map(snapshot.val(), (value, id) => ({ id, ...value })) | |
| const ref = path => firebase.database().ref(path) | |
| const getValue = path => ref(path).once('value') | |
| const getEntity = path => getValue(path).then(mapSnapshotToEntity) | |
| const getEntities = path => getValue(path).then(mapSnapshotToEntities) | |
| // http://dev.apollodata.com/tools/graphql-tools/resolvers.html | |
| const resolvers = { | |
| Author: { | |
| posts(author) { | |
| return getEntities('posts').then(posts => filter(posts, { authorId: author.id })) | |
| }, | |
| }, | |
| Post: { | |
| author(post) { | |
| return getEntities('authors').then(posts => filter(authors, { id: authorId })) | |
| }, | |
| }, | |
| Query: { | |
| posts() { | |
| return getEntities('posts') | |
| }, | |
| authors() { | |
| return getEntities('authors') | |
| } | |
| }, | |
| } | |
| const schema = ` | |
| type Author { | |
| id: Int! | |
| firstName: String | |
| lastName: String | |
| posts: [Post] | |
| } | |
| type Post { | |
| id: Int! | |
| title: String | |
| author: Author | |
| } | |
| type Query { | |
| posts: [Post] | |
| authors: [Author] | |
| } | |
| ` | |
| export default makeExecutableSchema({ typeDefs: schema, resolvers }) |
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