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@yeutech/ra-data-graphcool

v2.0.0-RC2-yeutech.2

Published

A Graphcool data provider for react-admin

Downloads

2

Readme

ra-data-graphcool

A GraphQL data provider for react-admin built with Apollo and tailored to target the GraphCool service.

A version of the react-admin demo using this data provider is available at https://react-admin-graphql.now.sh/.

Installation

Install with:

npm install --save graphql ra-data-graphcool

or

yarn add graphql ra-data-graphcool

Usage

This example assumes a Post type is defined in the graphcool schema.

// in App.js
import React, { Component } from 'react';
import buildGraphcoolProvider from '@yeutech/ra-data-graphcool';
import { Admin, Resource, Delete } from '@yeutech/react-admin';

import { PostCreate, PostEdit, PostList } from './posts';

const client = new ApolloClient();

class App extends Component {
    constructor() {
        super();
        this.state = { dataProvider: null };
    }
    componentDidMount() {
        buildGraphcoolProvider({ clientOptions: { uri: 'https://api.graph.cool/simple/v1/graphcool_id' }})
            .then(dataProvider => this.setState({ dataProvider }));
    }

    render() {
        const { dataProvider } = this.state;

        if (!dataProvider) {
            return <div>Loading</div>;
        }

        return (
            <Admin dataProvider={dataProvider}>
                <Resource name="Post" list={PostList} edit={PostEdit} create={PostCreate} remove={Delete} />
            </Admin>
        );
    }
}

export default App;

And that's it, buildGraphcoolProvider will create a default ApolloClient for you and run an introspection query on your graphcool endpoint, listing all potential resources.

This works with any GraphCool endpoint, or any GraphQL endpoint modeled after the GraphCool grammar:

GraphCool gammar

Options

Customize the Apollo client

You can either supply the client options by calling buildGraphcoolProvider like this:

buildGraphcoolProvider({ clientOptions: { uri: 'https://api.graph.cool/simple/v1/graphcool_id', ...otherApolloOptions } });

Or supply your client directly with:

buildGraphcoolProvider({ client: myClient });

Customize the introspection

These are the default options for introspection:

const introspectionOptions = {
    include: [], // Either an array of types to include or a function which will be called for every type discovered through introspection
    exclude: [], // Either an array of types to exclude or a function which will be called for every type discovered through introspection
}

// Including types
const introspectionOptions = {
    include: ['Post', 'Comment'],
};

// Excluding types
const introspectionOptions = {
    exclude: ['CommandItem'],
};

// Including types with a function
const introspectionOptions = {
    include: type => ['Post', 'Comment'].includes(type.name),
};

// Including types with a function
const introspectionOptions = {
    exclude: type => !['Post', 'Comment'].includes(type.name),
};

Note: exclude and include are mutualy exclusives and include will take precendance.

Note: When using functions, the type argument will be a type returned by the introspection query. Refer to the introspection documentation for more information.

Pass the introspection options to the buildApolloProvider function:

buildApolloProvider({ introspection: introspectionOptions });

DELETE_MANY and UPDATE_MANY Optimizations

Graphcool does not allow multiple deletions or updates in a single query. This provider simply makes multiple requests to handle those. This is obviously not ideal but can be alleviated by supplying your own ApolloClient which could use the apollo-link-batch-http link. Indeed, Graphcool does support query batching.

Contributing

Run the tests with this command:

make test