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https://github.com/railt/railt
⚡️ A PHP GraphQL Framework
https://github.com/railt/railt
application compiler framework graphql graphql-php language monorepo php php7 railt sdl
Last synced: 5 days ago
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⚡️ A PHP GraphQL Framework
- Host: GitHub
- URL: https://github.com/railt/railt
- Owner: railt
- License: mit
- Created: 2017-05-19T01:37:11.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2023-10-18T00:10:42.000Z (about 1 year ago)
- Last Synced: 2025-01-01T00:06:04.753Z (12 days ago)
- Topics: application, compiler, framework, graphql, graphql-php, language, monorepo, php, php7, railt, sdl
- Language: PHP
- Homepage: https://railt.org
- Size: 7.51 MB
- Stars: 361
- Watchers: 21
- Forks: 18
- Open Issues: 16
-
Metadata Files:
- Readme: README.md
- Contributing: .github/CONTRIBUTING.md
- License: LICENSE.md
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
- awesome-graphql - Railt - High quality and loosely coupled framework for developing GraphQL applications using all the modern qualities of the language. (Libraries / PHP Libraries)
- awesome-graphql - Railt - High quality and loosely coupled framework for developing GraphQL applications using all the modern qualities of the language. (Libraries / PHP Libraries)
README
## Introduction
Project idea is clean and high-quality code.
Unlike most (all at the moment) implementations, like [webonyx](https://github.com/webonyx/graphql-php),
[youshido](https://github.com/youshido-php/GraphQL) or [digitalonline](https://github.com/digiaonline/graphql-php)
the Railt contains a completely own implementation of the GraphQL SDL parser
which is based on [EBNF-like grammar](https://github.com/railt/railt/tree/master/libs/sdl/resources/grammar).
This opportunity allows not only to have the
[original implementation of the language](https://facebook.github.io/graphql/draft/) and to
keep it always up to date, but also to implement [a new backward compatible
functionality](https://github.com/railt/railt/projects/1) that is not available
to other implementations.
Goal of Railt:
- Do not repeat the mistakes made in the JS-based implementations.
- Implement a modern and convenient environment for PHP developers.
- Implement easy integration into any ready-made solutions based on PSR.
- Provide familiar functionality (including dependency injection, routing, etc.).
## Installation
- `composer require railt/railt`
## Quick Start
This tutorial helps you:
- Obtain a basic understanding of GraphQL principles.
- Define a GraphQL schema that represents the structure of your data set.
- Run an instance of Railt Application that lets you execute queries
against your schema.
This tutorial assumes that you are familiar with the command line and PHP and
have installed a recent PHP (v8.1+) version.
### Step 1: Create a new project
1. From your preferred development directory, create a directory for a new
project and `cd` into it:
```bash
mkdir railt-example
cd railt-example
```
2. Initialize a new project with Composer:
```bash
composer init
composer require railt/railt dev-master@dev
```
> Your project directory now contains a `composer.json` file.
> Please note that in case of installation errors related to installing
> the dev version (_"The package is not available in a stable-enough version
> according to your minimum-stability setting"_), you need to specify
> `"minimum-stability": "dev"` in `composer.json` file.
>
> See more at [https://getcomposer.org/doc/04-schema.md#minimum-stability](https://getcomposer.org/doc/04-schema.md#minimum-stability)
Applications that run Railt Application may require two top-level dependencies:
- `railt/webonyx-executor` - An executor that provides a
[webonyx/graphql-php](https://github.com/webonyx/graphql-php) bridge for
launching and processing GraphQL requests.
- `railt/router-extension` - A router extension that provides a convenient way
to delegate GraphQL requests to controller instances.
> Alternatively, you can install all components separately:
> ```bash
> composer require railt/factory railt/webonyx-executor railt/router-extension
> ```
### Step 2: Define your GraphQL schema
Every GraphQL application (including Railt) uses a schema to define the
structure of data that clients can query. In this example, we'll create an
application for querying a collection of users by `id` and `name`.
Open `index.graphqls` in your preferred code editor and paste the following
into it:
```graphql
# Comments in GraphQL strings (such as this one)
# start with the hash (#) symbol.
# This "User" type defines the queryable fields for
# every user in our data source.
type User {
id: ID
name: String
}
# The "Query" type is special: it lists all of the
# available queries that clients can execute, along with
# the return type for each. In this case, the "books"
# query returns an array of zero or more Books (defined above).
type Query {
users: [User]
}
```
Now just open (create) the `index.php` file and paste the following into it:
```php
extend(new Railt\Extension\Router\DispatcherExtension());
//
// Creating a connection instance that will process
// incoming requests and return responses.
//
$connection = $application->connect(
schema: new \SplFileInfo(__DIR__ . '/index.graphqls'),
);
```
This snippet defines a simple, valid GraphQL schema. Clients will be able to
execute a query named `users`, and our server will return an array of zero
or more `User`s.
#### Step 2.1: Schema health check
To health check an application, you can create a `GraphQLRequest` instance
manually by passing the request object with the desired GraphQL query string.
```php
//
// Passing a request to the specified connection.
//
$response = $connection->handle(
request: new \Railt\Http\GraphQLRequest(
query: '{ users { id, name } }',
),
);
dump($response->toArray());
//
// Expected Output:
//
// array:1 [
// "data" => array:1 [
// "users" => []
// ]
// ]
//
```
### Step 3: Define controller
Resolvers tell Railt Application how to fetch the data associated with a
particular type. Because our `User` array is hardcoded, the corresponding
resolver is straightforward.
Create a controller file with a `UserController` class, for example with
a `index()` method and the following code:
```php
1, 'name' => 'Vasya'],
['id' => 2, 'name' => 'Petya'],
];
}
}
```
> Make sure that this class is available for autoloading or the file is
> included in the `index.php`.
### Step 4: Bind field to controller action
We've defined our data set, but Railt application doesn't know that it should
use that data set when it's executing a query. To fix this, we create a route.
Route tell Railt how to fetch the data associated with a particular type.
Because our `User` array is hardcoded, the corresponding route is
straightforward.
Add the following `@route` directive to the bottom of your `index.graphqls` file:
```graphql
# ...
type User {
id: ID
name: String
}
# ...
type Query {
users: [User]
# Route directive can be defined here
@route(action: "UserController->index")
}
```
### Step 5: Working with HTTP
To pass the request data and send the response, we must complete
our `index.php` file.
> {tip} In the case that you use [Symfony](https://symfony.com/doc/current/introduction/http_fundamentals.html),
[Laravel](https://laravel.com/docs/10.x/requests) or another http layer
(for example, [psr-7](https://www.php-fig.org/psr/psr-7/)), then you can
organize data acquisition according to the provided framework API and/or
specification.
```php
$data = json_decode(file_get_contents('php://input'), true);
$response = $connection->handle(
request: new \Railt\Http\GraphQLRequest(
query: $data['query'] ?? '',
variables: $data['variables'] ?? [],
operationName: $data['operationName'] ?? null,
),
);
$json = json_encode($response->toArray());
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
echo $json;
```
### Step 6: Start the server
We're ready to start our server! Run the following command from your
project's root directory:
```bash
php -S 127.0.0.0:80
```
You should now see the following output at the bottom of your terminal:
```bash
PHP 8.2.6 Development Server (http://127.0.0.1:80) started
```
We're up and running!
### Step 7: Execute your first query
We can now execute GraphQL queries on our server. To execute our first query,
we can use [Apollo Sandbox](https://studio.apollographql.com/sandbox/),
[GraphQL Playground](https://www.graphqlbin.com/v2/new) or something else.
Our server supports a single query named `users`. Let's execute it!
Here's a GraphQL query string for executing the `users` query:
```graphql
{
users {
id
name
}
}
```
Paste this string into the query panel and click the "send request" button (The
GraphQL interface and panel layout may depend on the platform/client you are
using). The results (from our hardcoded data set) appear in the response panel:
> One of the most important concepts of GraphQL is that clients can choose
to query only for the fields they need. Delete `name` from the query string
and execute it again. The response updates to include only the `id` field for
each `User`!
## Learning Railt
Full documentation can be found on the [official site](https://railt.org/).
## Contributing
Thank you for considering contributing to the Railt Framework!
The contribution guide can be found in the [documentation](https://railt.org/docs/contributions).
## Security Vulnerabilities
If you discover a security vulnerability within Railt, please send an e-mail to maintainer
at [email protected]. All security vulnerabilities will be promptly addressed.
## License
The Railt Framework is open-sourced software licensed under
the [MIT license](https://opensource.org/licenses/MIT).
## Help & Community [](https://discord.gg/ND7SpD4)
Join our [Discord community](https://discord.gg/ND7SpD4) if you run into issues or have questions. We love talking to you!
## Supported By
