バリデーション（入力のチェック）

use App\Http\Controllers\PostController;

Route::get('/post/create', [PostController::class, 'create']);
Route::post('/post', [PostController::class, 'store']);

<?php

namespace App\Http\Controllers;

use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class PostController extends Controller
{
    /**
     * Show the form to create a new blog post.
     */
    public function create(): View
    {
        return view('post.create');
    }

    /**
     * Store a new blog post.
     */
    public function store(Request $request): RedirectResponse
    {
        // Validate and store the blog post...

        $post = /** ... */

        return to_route('post.show', ['post' => $post->id]);
    }
}

/**
 * Store a new blog post.
 */
public function store(Request $request): RedirectResponse
{
    $validated = $request->validate([
        'title' => ['required', 'unique:posts', 'max:255'],
        'body' => ['required'],
    ]);

    // The blog post is valid...

    return redirect('/posts');
}

$validated = $request->validateWithBag('post', [
    'title' => ['required', 'unique:posts', 'max:255'],
    'body' => ['required'],
]);

$request->validate([
    'title' => ['bail', 'required', 'unique:posts', 'max:255'],
    'body' => ['required'],
]);

$request->validate([
    'title' => ['required', 'unique:posts', 'max:255'],
    'author.name' => ['required'],
    'author.description' => ['required'],
]);

$request->validate([
    'title' => ['required', 'unique:posts', 'max:255'],
    'v1\.0' => ['required'],
]);

<!-- /resources/views/post/create.blade.php -->

<h1>Create Post</h1>

@if ($errors->any())
    <div class="alert alert-danger">
        <ul>
            @foreach ($errors->all() as $error)
                <li>{{ $error }}</li>
            @endforeach
        </ul>
    </div>
@endif

<!-- Create Post Form -->

<!-- /resources/views/post/create.blade.php -->

<label for="title">Post Title</label>

<input
    id="title"
    type="text"
    name="title"
    class="@error('title') is-invalid @enderror"
/>

@error('title')
    <div class="alert alert-danger">{{ $message }}</div>
@enderror

<input ... class="@error('title', 'post') is-invalid @enderror">

$title = $request->old('title');

<input type="text" name="title" value="{{ old('title') }}">

$request->validate([
    'title' => ['required', 'unique:posts', 'max:255'],
    'body' => ['required'],
    'publish_at' => ['nullable', 'date'],
]);

{
    "message": "The team name field must be a string. (and 4 more errors)",
    "errors": {
        "team_name": [
            "The team name field must be a string.",
            "The team name field must be at least 1 characters."
        ],
        "authorization.role": [
            "The selected authorization.role is invalid."
        ],
        "users.0.email": [
            "The users.0.email field is required."
        ],
        "users.2.email": [
            "The users.2.email field must be a valid email address."
        ]
    }
}

php artisan make:request StorePostRequest

/**
 * Get the validation rules that apply to the request.
 *
 * @return array<string, \Illuminate\Contracts\Validation\ValidationRule|array<mixed>|string>
 */
public function rules(): array
{
    return [
        'title' => ['required', 'unique:posts', 'max:255'],
        'body' => ['required'],
    ];
}

/**
 * Store a new blog post.
 */
public function store(StorePostRequest $request): RedirectResponse
{
    // The incoming request is valid...

    // Retrieve the validated input data...
    $validated = $request->validated();

    // Retrieve a portion of the validated input data...
    $validated = $request->safe()->only(['name', 'email']);
    $validated = $request->safe()->except(['name', 'email']);

    // Store the blog post...

    return redirect('/posts');
}

use Illuminate\Validation\Validator;

/**
 * Get the "after" validation callables for the request.
 */
public function after(): array
{
    return [
        function (Validator $validator) {
            if ($this->somethingElseIsInvalid()) {
                $validator->errors()->add(
                    'field',
                    'Something is wrong with this field!'
                );
            }
        }
    ];
}

use App\Validation\ValidateShippingTime;
use App\Validation\ValidateUserStatus;
use Illuminate\Validation\Validator;

/**
 * Get the "after" validation callables for the request.
 */
public function after(): array
{
    return [
        new ValidateUserStatus,
        new ValidateShippingTime,
        function (Validator $validator) {
            //
        }
    ];
}

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\Attributes\StopOnFirstFailure;
use Illuminate\Foundation\Http\FormRequest;

#[StopOnFirstFailure]
class StorePostRequest extends FormRequest
{
    // ...
}

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\Attributes\FailOnUnknownFields;
use Illuminate\Foundation\Http\FormRequest;

#[FailOnUnknownFields]
class StorePostRequest extends FormRequest
{
    public function rules(): array
    {
        return [
            'title' => ['required', 'string'],
            'body' => ['required', 'string'],
        ];
    }
}

use Illuminate\Foundation\Http\FormRequest;

/**
 * Bootstrap any application services.
 */
public function boot(): void
{
    FormRequest::failOnUnknownFields();
}

#[FailOnUnknownFields(false)]
class PublicWebhookRequest extends FormRequest
{
    // ...
}

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\Attributes\RedirectTo;
use Illuminate\Foundation\Http\FormRequest;

#[RedirectTo('/dashboard')]
class StorePostRequest extends FormRequest
{
    // ...
}

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\Attributes\RedirectToRoute;
use Illuminate\Foundation\Http\FormRequest;

#[RedirectToRoute('dashboard')]
class StorePostRequest extends FormRequest
{
    // ...
}

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\Attributes\ErrorBag;
use Illuminate\Foundation\Http\FormRequest;

#[ErrorBag('login')]
class LoginRequest extends FormRequest
{
    // ...
}

use App\Models\Comment;

/**
 * Determine if the user is authorized to make this request.
 */
public function authorize(): bool
{
    $comment = Comment::find($this->route('comment'));

    return $comment && $this->user()->can('update', $comment);
}

Route::post('/comment/{comment}');

return $this->user()->can('update', $this->comment);

/**
 * Determine if the user is authorized to make this request.
 */
public function authorize(): bool
{
    return true;
}

/**
 * Get the error messages for the defined validation rules.
 *
 * @return array<string, string>
 */
public function messages(): array
{
    return [
        'title.required' => 'A title is required',
        'body.required' => 'A message is required',
    ];
}

/**
 * Get custom attributes for validator errors.
 *
 * @return array<string, string>
 */
public function attributes(): array
{
    return [
        'email' => 'email address',
    ];
}

use Illuminate\Support\Str;

/**
 * Prepare the data for validation.
 */
protected function prepareForValidation(): void
{
    $this->merge([
        'slug' => Str::slug($this->slug),
    ]);
}

/**
 * Handle a passed validation attempt.
 */
protected function passedValidation(): void
{
    $this->replace(['name' => 'Taylor']);
}

<?php

namespace App\Http\Controllers;

use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;

class PostController extends Controller
{
    /**
     * Store a new blog post.
     */
    public function store(Request $request): RedirectResponse
    {
        $validator = Validator::make($request->all(), [
            'title' => ['required', 'unique:posts', 'max:255'],
            'body' => ['required'],
        ]);

        if ($validator->fails()) {
            return redirect('/post/create')
                ->withErrors($validator)
                ->withInput();
        }

        // Retrieve the validated input...
        $validated = $validator->validated();

        // Retrieve a portion of the validated input...
        $validated = $validator->safe()->only(['name', 'email']);
        $validated = $validator->safe()->except(['name', 'email']);

        // Store the blog post...

        return redirect('/posts');
    }
}

if ($validator->stopOnFirstFailure()->fails()) {
    // ...
}

Validator::make($request->all(), [
    'title' => ['required', 'unique:posts', 'max:255'],
    'body' => ['required'],
])->validate();

Validator::make($request->all(), [
    'title' => ['required', 'unique:posts', 'max:255'],
    'body' => ['required'],
])->validateWithBag('post');

return redirect('/register')->withErrors($validator, 'login');

{{ $errors->login->first('email') }}

$validator = Validator::make($input, $rules, $messages = [
    'required' => 'The :attribute field is required.',
]);

$messages = [
    'same' => 'The :attribute and :other must match.',
    'size' => 'The :attribute must be exactly :size.',
    'between' => 'The :attribute value :input is not between :min - :max.',
    'in' => 'The :attribute must be one of the following types: :values',
];

$messages = [
    'email.required' => 'We need to know your email address!',
];

$validator = Validator::make($input, $rules, $messages, [
    'email' => 'email address',
]);

use Illuminate\Support\Facades\Validator;

$validator = Validator::make(/* ... */);

$validator->after(function ($validator) {
    if ($this->somethingElseIsInvalid()) {
        $validator->errors()->add(
            'field', 'Something is wrong with this field!'
        );
    }
});

if ($validator->fails()) {
    // ...
}

use App\Validation\ValidateShippingTime;
use App\Validation\ValidateUserStatus;

$validator->after([
    new ValidateUserStatus,
    new ValidateShippingTime,
    function ($validator) {
        // ...
    },
]);

$validated = $request->validated();

$validated = $validator->validated();

$validated = $request->safe()->only(['name', 'email']);

$validated = $request->safe()->except(['name', 'email']);

$validated = $request->safe()->all();

// Validated data may be iterated...
foreach ($request->safe() as $key => $value) {
    // ...
}

// Validated data may be accessed as an array...
$validated = $request->safe();

$email = $validated['email'];

$validated = $request->safe()->merge(['name' => 'Taylor Otwell']);

$collection = $request->safe()->collect();

$errors = $validator->errors();

echo $errors->first('email');

foreach ($errors->get('email') as $message) {
    // ...
}

foreach ($errors->get('attachments.*') as $message) {
    // ...
}

foreach ($errors->all() as $message) {
    // ...
}

if ($errors->has('email')) {
    // ...
}

'custom' => [
    'email' => [
        'required' => 'We need to know your email address!',
        'max' => 'Your email address is too long!'
    ],
],

'attributes' => [
    'email' => 'email address',
],

Validator::make($request->all(), [
    'credit_card_number' => ['required_if:payment_type,cc']
]);

The credit card number field is required when payment type is cc.

'values' => [
    'payment_type' => [
        'cc' => 'credit card'
    ],
],

The credit card number field is required when payment type is credit card.

use Illuminate\Support\Facades\Validator;

$validator = Validator::make($data, [
    'has_appointment' => ['required', 'boolean'],
    'appointment_date' => ['exclude_if:has_appointment,false', 'required', 'date'],
    'doctor_name' => ['exclude_if:has_appointment,false', 'required', 'string'],
]);

$validator = Validator::make($data, [
    'has_appointment' => ['required', 'boolean'],
    'appointment_date' => ['exclude_unless:has_appointment,true', 'required', 'date'],
    'doctor_name' => ['exclude_unless:has_appointment,true', 'required', 'string'],
]);

$validator = Validator::make($data, [
    'email' => ['sometimes', 'required', 'email'],
]);

use Illuminate\Support\Facades\Validator;

$validator = Validator::make($request->all(), [
    'email' => ['required', 'email'],
    'games' => ['required', 'integer', 'min:0'],
]);

use Illuminate\Support\Fluent;

$validator->sometimes('reason', ['required', 'max:500'], function (Fluent $input) {
    return $input->games >= 100;
});

$validator->sometimes(['reason', 'cost'], 'required', function (Fluent $input) {
    return $input->games >= 100;
});

$input = [
    'channels' => [
        [
            'type' => 'email',
            'address' => 'abigail@example.com',
        ],
        [
            'type' => 'url',
            'address' => 'https://example.com',
        ],
    ],
];

$validator->sometimes('channels.*.address', 'email', function (Fluent $input, Fluent $item) {
    return $item->type === 'email';
});

$validator->sometimes('channels.*.address', 'url', function (Fluent $input, Fluent $item) {
    return $item->type !== 'email';
});

use Illuminate\Support\Facades\Validator;

$input = [
    'user' => [
        'name' => 'Taylor Otwell',
        'username' => 'taylorotwell',
        'admin' => true,
    ],
];

Validator::make($input, [
    'user' => ['array:name,username'],
]);

use Illuminate\Support\Facades\Validator;

$validator = Validator::make($request->all(), [
    'photos.profile' => ['required', 'image'],
]);

$validator = Validator::make($request->all(), [
    'users.*.email' => ['email', 'unique:users'],
    'users.*.first_name' => ['required_with:users.*.last_name'],
]);

'custom' => [
    'users.*.email' => [
        'unique' => 'Each user must have a unique email address',
    ]
],

use App\Rules\HasPermission;
use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\Rule;

$validator = Validator::make($request->all(), [
    'companies.*.id' => Rule::forEach(function (string|null $value, string $attribute) {
        return [
            Rule::exists(Company::class, 'id'),
            new HasPermission('manage-company', $value),
        ];
    }),
]);

use Illuminate\Support\Facades\Validator;

$input = [
    'photos' => [
        [
            'name' => 'BeachVacation.jpg',
            'description' => 'A photo of my beach vacation!',
        ],
        [
            'name' => 'GrandCanyon.jpg',
            'description' => '',
        ],
    ],
];

Validator::validate($input, [
    'photos.*.description' => ['required'],
], [
    'photos.*.description.required' => 'Please describe photo #:position.',
]);

'photos.*.attributes.*.string' => 'Invalid attribute for photo #:second-position.',

use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\Rules\File;

Validator::validate($input, [
    'attachment' => [
        'required',
        File::types(['mp3', 'wav'])
            ->min(1024)
            ->max(12 * 1024),
    ],
]);

File::types(['mp3', 'wav'])
    ->min('1kb')
    ->max('10mb');

use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\Rule;
use Illuminate\Validation\Rules\File;

Validator::validate($input, [
    'photo' => [
        'required',
        File::image()
            ->min(1024)
            ->max(12 * 1024)
            ->dimensions(Rule::dimensions()->maxWidth(1000)->maxHeight(500)),
    ],
]);

use Illuminate\Validation\Rule;
use Illuminate\Validation\Rules\File;

File::image()->dimensions(
    Rule::dimensions()
        ->maxWidth(1000)
        ->maxHeight(500)
);

use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\Rules\Password;

$validator = Validator::make($request->all(), [
    'password' => ['required', 'confirmed', Password::min(8)],
]);

// Require at least 8 characters...
Password::min(8);

// Require at most 256 characters...
Password::min(16)->max(256);

// Require at least one letter...
Password::min(8)->letters();

// Require at least one uppercase and one lowercase letter...
Password::min(8)->mixedCase();

// Require at least one number...
Password::min(8)->numbers();

// Require at least one symbol...
Password::min(8)->symbols();

Password::min(8)->uncompromised();

// Ensure the password appears no more than 3 times in the same data leak...
Password::min(8)->uncompromised(3);

Password::min(8)
    ->max(256)
    ->letters()
    ->mixedCase()
    ->numbers()
    ->symbols()
    ->uncompromised();

<input
    type="password"
    name="password"
    autocomplete="new-password"
    passwordrules="{{ Password::defaults()->toPasswordRulesString() }}"
/>

use Illuminate\Validation\Rules\Password;

/**
 * Bootstrap any application services.
 */
public function boot(): void
{
    Password::defaults(function () {
        $rule = Password::min(8);

        return $this->app->isProduction()
            ? $rule->mixedCase()->uncompromised()
            : $rule;
    });
}

'password' => ['required', Password::defaults()],

use App\Rules\ZxcvbnRule;

Password::defaults(function () {
    $rule = Password::min(8)->rules([new ZxcvbnRule]);

    // ...
});

php artisan make:rule Uppercase

<?php

namespace App\Rules;

use Closure;
use Illuminate\Contracts\Validation\ValidationRule;

class Uppercase implements ValidationRule
{
    /**
     * Run the validation rule.
     */
    public function validate(string $attribute, mixed $value, Closure $fail): void
    {
        if (strtoupper($value) !== $value) {
            $fail('The :attribute must be uppercase.');
        }
    }
}

use App\Rules\Uppercase;

$request->validate([
    'name' => ['required', 'string', new Uppercase],
]);

if (strtoupper($value) !== $value) {
    $fail('validation.uppercase')->translate();
}

$fail('validation.location')->translate([
    'value' => $this->value,
], 'fr');

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\DataAwareRule;
use Illuminate\Contracts\Validation\ValidationRule;

class Uppercase implements DataAwareRule, ValidationRule
{
    /**
     * All of the data under validation.
     *
     * @var array<string, mixed>
     */
    protected $data = [];

    // ...

    /**
     * Set the data under validation.
     *
     * @param  array<string, mixed>  $data
     */
    public function setData(array $data): static
    {
        $this->data = $data;

        return $this;
    }
}

<?php

namespace App\Rules;

use Illuminate\Contracts\Validation\ValidationRule;
use Illuminate\Contracts\Validation\ValidatorAwareRule;
use Illuminate\Validation\Validator;

class Uppercase implements ValidationRule, ValidatorAwareRule
{
    /**
     * The validator instance.
     *
     * @var \Illuminate\Validation\Validator
     */
    protected $validator;

    // ...

    /**
     * Set the current validator.
     */
    public function setValidator(Validator $validator): static
    {
        $this->validator = $validator;

        return $this;
    }
}

use Illuminate\Support\Facades\Validator;
use Closure;

$validator = Validator::make($request->all(), [
    'title' => [
        'required',
        'max:255',
        function (string $attribute, mixed $value, Closure $fail) {
            if ($value === 'foo') {
                $fail("The {$attribute} is invalid.");
            }
        },
    ],
]);

use Illuminate\Support\Facades\Validator;

$rules = ['name' => ['unique:users,name']];

$input = ['name' => ''];

Validator::make($input, $rules)->passes(); // true

php artisan make:rule Uppercase --implicit