mll-lab / graphql-php-scalars
A collection of custom scalar types for usage with https://github.com/webonyx/graphql-php
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Dependents: 22
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Requires
- php: ^8
- ext-json: *
- egulias/email-validator: ^2.1.17 || ^3 || ^4
- spatie/regex: ^1.4 || ^2 || ^3
- thecodingmachine/safe: ^1.3 || ^2
- webonyx/graphql-php: ^15
Requires (Dev)
- ergebnis/composer-normalize: ^2.16
- mll-lab/php-cs-fixer-config: ^5
- phpstan/extension-installer: ^1
- phpstan/phpstan: ^1
- phpstan/phpstan-deprecation-rules: ^1
- phpstan/phpstan-phpunit: ^1
- phpstan/phpstan-strict-rules: ^1
- phpunit/phpunit: ^9 || ^10
- symfony/var-dumper: ^5.4 || ^6
- thecodingmachine/phpstan-safe-rule: ^1.1
README
A collection of custom scalar types for usage with https://github.com/webonyx/graphql-php
Installation
composer require mll-lab/graphql-php-scalars
Usage
You can use the provided Scalars just like any other type in your schema definition. Check SchemaUsageTest for an example.
BigInt
An arbitrarily long sequence of digits that represents a big integer.
Date
A date string with format Y-m-d
, e.g. 2011-05-23
.
The following conversion applies to all date scalars:
- Outgoing values can either be valid date strings or
\DateTimeInterface
instances. - Incoming values must always be valid date strings and will be converted to
\DateTimeImmutable
instances.
DateTime
A datetime string with format Y-m-d H:i:s
, e.g. 2018-05-23 13:43:32
.
DateTimeTz
A datetime string with format Y-m-d\TH:i:s.uP
, e.g. 2020-04-20T16:20:04+04:00
, 2020-04-20T16:20:04Z
.
A RFC 5321 compliant email.
IntRange
Allows defining numeric scalars where the values must lie between a defined minimum and maximum.
use MLL\GraphQLScalars\IntRange; final class UpToADozen extends IntRange { protected static function min(): int { return 1; } protected static function max(): int { return 12; } }
JSON
Arbitrary data encoded in JavaScript Object Notation. See https://www.json.org.
This expects a string in JSON format, not an arbitrary JSON value or GraphQL literal.
type Query { foo(bar: JSON!): JSON! } # Wrong, the given value is a GraphQL literal object { foo(bar: { baz: 2 }) } # Correct, the given value is a JSON string representing an object { foo(bar: "{ \"bar\": 2 }") }
// Wrong, the variable value is a JSON object { "query": "query ($bar: JSON!) { foo(bar: $bar) }", "variables": { "bar": { "baz": 2 } } } // Correct, the variable value is a JSON string representing an object { "query": "query ($bar: JSON!) { foo(bar: $bar) }", "variables": { "bar": "{ \"bar\": 2 }" } }
JSON responses will contain nested JSON strings.
{ "data": { "foo": "{ \"bar\": 2 }" } }
Mixed
Loose type that allows any value. Be careful when passing in large Int
or Float
literals,
as they may not be parsed correctly on the server side. Use String
literals if you are
dealing with really large numbers to be on the safe side.
Null
Always null
. Strictly validates value is non-null, no coercion.
Regex
The Regex
class allows you to define a custom scalar that validates that the given
value matches a regular expression.
The quickest way to define a custom scalar is the make
factory method. Just provide
a name and a regular expression, you will receive a ready-to-use custom regex scalar.
use MLL\GraphQLScalars\Regex; $hexValue = Regex::make( 'HexValue', 'A hexadecimal color is specified with: `#RRGGBB`, where `RR` (red), `GG` (green) and `BB` (blue) are hexadecimal integers between `00` and `FF` specifying the intensity of the color.', '/^#?([a-f0-9]{6}|[a-f0-9]{3})$/' );
You may also define your regex scalar as a class.
use MLL\GraphQLScalars\Regex; // The name is implicitly set through the class name here class HexValue extends Regex { /** The description that is used for schema introspection. */ public ?string $description = /** @lang Markdown */<<<'MARKDOWN' A hexadecimal color is specified with: `#RRGGBB`, where `RR` (red), `GG` (green) and `BB` (blue) are hexadecimal integers between `00` and `FF` specifying the intensity of the color. MARKDOWN; public static function regex(): string { return '/^#?([a-f0-9]{6}|[a-f0-9]{3})$/'; } }
StringScalar
The StringScalar
encapsulates all the boilerplate associated with creating a string-based Scalar type.
It performs basic checks and coercion, you can focus on the minimal logic that is specific to your use case.
All you have to specify is a function that checks if the given string is valid.
Use the factory method make
to generate an instance on the fly.
use MLL\GraphQLScalars\StringScalar; $coolName = StringScalar::make( 'CoolName', 'A name that is most definitely cool.', static fn (string $name): bool => in_array($name, [ 'Vladar', 'Benedikt', 'Christopher', ]), );
Or you may simply extend the class, check out the implementation of the Email scalar to see how.