@unly/ra-data-graphql-prisma

react-admin data provider for Prisma (v1), used by https://github.com/UnlyEd/next-right-now-admin

Why again another fork?

A bit of history...

• https://github.com/Weakky/ra-data-opencrud was created in 2018, but hasn't been updated since Oct. 2018
• https://github.com/marcantoine/ra-data-graphql-prisma took over from ra-data-opencrud and is still maintained, it's also used in a production app (private)
• https://github.com/UnlyEd/ra-data-graphql-prisma was created in 2020 from ra-data-graphql-prisma, because too many changes were needed and we needed to do them fast

Why use this one?

• https://www.npmjs.com/search?q=ra-data-prisma lists 11 packages, there are no 1.0.0 version, everything is 0.x
• All packages are at least 180kB, some even go up to 500+... This one is around 90kB
• It's used by https://github.com/UnlyEd/next-right-now-admin, which features a real GraphCMS demo
• See CHANGELOG for details, features, etc.

Demo

If you wanna give it a try, here's a quick preview on codesandbox. The API is hosted on Prisma's public servers, which means the API is limited to 10 API calls per seconds. Be aware that it might not be working because of that, or that performances may be poor.

• What is react admin ? And what's @unly/ra-data-graphql-prisma ?
• Installation
• Usage
• Options
  • Relation and references
  • Customize the Apollo client
  • Overriding a specific query
    • With a whole query
    • Or using fragments
  • Customize the introspection
• Tips and workflow
  • Performance issues
    • Suggested workflow
• Contributing
  • Known issues
    • Yarn install error on fsevent

• Contributing
  • Working locally
  • Test
  • Versions
    • SemVer
  • Releasing and publishing
• Changelog
• License
• Vulnerability disclosure
• Contributors and maintainers
• [ABOUT UNLY]

What is react admin ? And what's @unly/ra-data-graphql-prisma ?

Find out more about the benefits of using react-admin with Prisma here.

Prisma V1 offers a full graphQL CRUD Server out of the box. This module allows to use react-admin directly on Prisma Server.

This module is a fork of ra-data-graphql-prisma, itself a fork of ra-data-opencrud.

Since ra-data-opencrud maintainer focus on the future of back-end development with Prisma Framework (v2) and nexus-prisma, this fork allow us to maintain and fix some part of the module.

While the original module goal was to follow the opencrud specification, this fork mostly focus on Prisma 1. The module should however with other server following the opencrud convention.

This module is not compatible with Prisma (2) Framework & nexus-prisma.

Installation

Install with:

npm install --save graphql @unly/ra-data-graphql-prisma

or

yarn add graphql @unly/ra-data-graphql-prisma

Usage

This example assumes a Post type is defined in your datamodel. It's based on create-react-app.

// in App.js
import React, { Component } from 'react';
import buildGraphQLProvider from '@unly/ra-data-graphql-prisma';
import { Admin, Resource, Delete } from 'react-admin';

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

const client = new ApolloClient();

class App extends Component {
    constructor() {
        super();
        this.state = { dataProvider: null };
    }
    componentDidMount() {
        buildGraphQLProvider({ clientOptions: { uri: 'your_prisma_or_graphcms_endpoint' }})
            .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, buildGraphQLProvider will create a default ApolloClient for you and run an introspection query on your Prisma/GraphCMS endpoint, listing all potential resources.

Options

Relation and references

In order to link to reference record using ReferenceField or ReferenceInput, @unly/ra-data-graphql-prisma uses a object notation (instead of snake_case or camelCase as seen in the react-admin documentation)

<ReferenceInput source="company.id" reference="Company">
    <SelectInput optionText="id" />
</ReferenceInput>

Exception : The reference in a ReferenceArrayField is with camelCase : this field has not been managed yet.

Customize the Apollo client

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

buildGraphQLProvider({ clientOptions: { uri: 'your_prisma_or_graphcms_endpoint', ...otherApolloOptions } });

Or supply your client directly with:

buildGraphQLProvider({ client: myClient });

Overriding a specific query

The default behavior might not be optimized especially when dealing with references. You can override a specific query by decorating the buildQuery function:

With a whole query

// in src/dataProvider.js
import buildGraphQLProvider, { buildQuery } from '@unly/ra-data-graphql-prisma';

const enhanceBuildQuery = introspection => (fetchType, resource, params) => {
    const builtQuery = buildQuery(introspection)(fetchType, resource, params);

    if (resource === 'Command' && fetchType === 'GET_ONE') {
        return {
            // Use the default query variables and parseResponse
            ...builtQuery,
            // Override the query
            query: gql`
                query Command($id: ID!) {
                    data: Command(id: $id) {
                        id
                        reference
                        customer {
                            id
                            firstName
                            lastName
                        }
                    }
                }`,
        };
    }

    return builtQuery;
}

export default buildGraphQLProvider({ buildQuery: enhanceBuildQuery })

Or using fragments

You can also override a query using the same API graphql-binding offers.

buildQuery accept a fourth parameter which is a fragment that will be used as the final query.

// in src/dataProvider.js
import buildGraphQLProvider, { buildQuery } from '@unly/ra-data-graphql-prisma';

const enhanceBuildQuery = introspection => (fetchType, resource, params) => {
    if (resource === 'Command' && fetchType === 'GET_ONE') {
        // If you need auto-completion from your IDE, you can also use gql and provide a valid fragment
        return buildQuery(introspection)(fetchType, resource, params, `{
            id
            reference
            customer { id firstName lastName }
        }`);
    }

    return buildQuery(introspection)(fetchType, resource, params);
}

export default buildGraphQLProvider({ buildQuery: enhanceBuildQuery })

As this approach can become really cumbersome, you can find a more elegant way to pass fragments in the example under /examples/prisma-ecommerce

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 mutually exclusives and include will take precedence.

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 });

Tips and workflow

Performance issues

As react-admin was originally made for REST endpoints, it cannot always take full advantage of GraphQL's benefits.

Although react-admin already has a load of built-in optimizations (Read more here and here), it is not yet well suited when fetching n-to-many relations (multiple requests will be sent).

To counter that limitation, as shown above, you can override queries to directly provide all the fields that you will need to display your view.

Suggested workflow

As overriding all queries can be cumbersome, this should be done progressively.

• Start by using react-admin the way you're supposed to (using <ReferenceField /> and <ReferenceManyField /> when trying to access references)
• Detect the hot-spots
• Override the queries on those hot-spots by providing all the fields necessary (as shown above)
• Replace the <ReferenceField /> by simple fields (such as <TextField />) by accessing the resource in the following way: <TextField source="product.name" />
• Replace the <ReferenceManyField /> by <ArrayField /> using the same technique as above

Contributing

Use the example under examples/prisma-ecommerce as a playground for improving @unly/ra-data-graphql-prisma.

To easily enhance @unly/ra-data-graphql-prisma and get the changes reflected on examples/prisma-ecommerce, do the following:

• cd @unly/ra-data-graphql-prisma
• yarn link
• cd examples/prisma-ecommerce
• yarn link @unly/ra-data-graphql-prisma

Once this is done, the @unly/ra-data-graphql-prisma dependency will be replaced by the one on the repository. One last thing, don't forget to transpile the library with babel by running the following command on the root folder

yarn watch

You should now be good to go ! Run the tests with this command:

jest

Known issues

Yarn install error on fsevent

When installing a local environment using yarn and a node version > 10, a problem might occurs while installing some dependencies (fsevent). Running the following command appears to fix the problem

yarn cache clean && yarn upgrade && yarn

Related issues : https://github.com/yarnpkg/yarn/issues/3926

Contributing

We gladly accept PRs, but please open an issue first so we can discuss it beforehand.

Working locally

yarn start # Shortcut - Runs linter + build + tests in concurrent mode (watch mode)

OR run each process separately for finer control

yarn lint
yarn build
yarn test

Test

yarn test # Run all tests, interactive and watch mode
yarn test:once
yarn test:coverage

Versions

SemVer

We use Semantic Versioning for this project: https://semver.org/. (vMAJOR.MINOR.PATCH: v1.0.1)

• Major version: Must be changed when Breaking Changes are made (public API isn't backward compatible).
  • A function has been renamed/removed from the public API
  • Something has changed that will cause the app to behave differently with the same configuration
• Minor version: Must be changed when a new feature is added or updated (without breaking change nor behavioral change)
• Patch version: Must be changed when any change is made that isn't either Major nor Minor. (Misc, doc, etc.)

Releasing and publishing

yarn releaseAndPublish # Shortcut - Will prompt for bump version, commit, create git tag, push commit/tag and publish to NPM

yarn release # Will prompt for bump version, commit, create git tag, push commit/tag
npm publish # Will publish to NPM

Don't forget we are using SemVer, please follow our SemVer rules.

Pro hint: use beta tag if you're in a work-in-progress (or unsure) to avoid releasing WIP versions that looks legit

Changelog

Our API change (including breaking changes and "how to migrate") are documented in the Changelog.

See changelog

License

MIT

Vulnerability disclosure

See our policy.

Contributors and maintainers

This project is being maintained by:

• [Unly] Ambroise Dhenain (Vadorequest) (active)

[ABOUT UNLY]

Unly is a socially responsible company, fighting inequality and facilitating access to higher education. Unly is committed to making education more inclusive, through responsible funding for students. We provide technological solutions to help students find the necessary funding for their studies. We proudly participate in many TechForGood initiatives. To support and learn more about our actions to make education accessible, visit :

• https://twitter.com/UnlyEd
• https://www.facebook.com/UnlyEd/
• https://www.linkedin.com/company/unly
• Interested to work with us?

Tech tips and tricks from our CTO on our Medium page!

#TECHFORGOOD #EDUCATIONFORALL