Using Spatie/Laravel-Data to validate Filament Forms
Is it possible to take advantage of Spatie/Laravel-Data to validate Filament forms? Looking to integrate both for consistent validation across API, commands, jobs, and Filament forms. Current approach:
While this works for basic rules, it doesn't handle:
$rules = StockMovementData::getValidationRules([]);
return [
TextInput::make('quantity')
->rules($rules['quantity'])
->numeric()
];$rules = StockMovementData::getValidationRules([]);
return [
TextInput::make('quantity')
->rules($rules['quantity'])
->numeric()
];While this works for basic rules, it doesn't handle:
- Complex validations requiring context (ValidationContext)
- Custom messages
- Type casting
- Data Object reusability
Solution
got it!
example:
example:
// UserData
<?php
namespace App\Data;
use App\Actions\CreateUserAction;
use App\Models\User;
use Spatie\LaravelData\Data;
use Spatie\LaravelData\Support\Validation\ValidationContext;
class UserData extends Data
{
public function __construct(
public string $name,
public string $email,
public string $password,
) {}
public static function rules(ValidationContext $context): array
{
return [
'name' => [
function ($attribute, $value, $fail) use ($context) {
if ($context->payload['email'] === 'bruno') {
$fail('Cannot use the name bruno in the email');
}
},
],
'email' => ['required', 'email'],
'password' => ['required'],
];
}
public static function messages(): array
{
return [
'name.required' => 'The name is required',
'email.required' => 'The email is required',
'email.email' => 'Invalid email',
];
}
public static function create(array $data): User
{
return CreateUserAction::run(self::validateAndCreate($data));
}
}
// CreateUser
<?php
namespace App\Filament\Resources\UserResource\Pages;
use App\Data\UserData;
use App\Filament\Resources\UserResource;
use Filament\Resources\Pages\CreateRecord;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Validation\ValidationException;
class CreateUser extends CreateRecord
{
protected static string $resource = UserResource::class;
protected function handleRecordCreation(array $data): Model
{
try {
return UserData::create($data);
} catch (ValidationException $e) {
$errors = collect($e->errors())->mapWithKeys(function ($messages, $key) {
return ["data.$key" => $messages];
})->toArray();
throw ValidationException::withMessages($errors);
}
}
}// UserData
<?php
namespace App\Data;
use App\Actions\CreateUserAction;
use App\Models\User;
use Spatie\LaravelData\Data;
use Spatie\LaravelData\Support\Validation\ValidationContext;
class UserData extends Data
{
public function __construct(
public string $name,
public string $email,
public string $password,
) {}
public static function rules(ValidationContext $context): array
{
return [
'name' => [
function ($attribute, $value, $fail) use ($context) {
if ($context->payload['email'] === 'bruno') {
$fail('Cannot use the name bruno in the email');
}
},
],
'email' => ['required', 'email'],
'password' => ['required'],
];
}
public static function messages(): array
{
return [
'name.required' => 'The name is required',
'email.required' => 'The email is required',
'email.email' => 'Invalid email',
];
}
public static function create(array $data): User
{
return CreateUserAction::run(self::validateAndCreate($data));
}
}
// CreateUser
<?php
namespace App\Filament\Resources\UserResource\Pages;
use App\Data\UserData;
use App\Filament\Resources\UserResource;
use Filament\Resources\Pages\CreateRecord;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Validation\ValidationException;
class CreateUser extends CreateRecord
{
protected static string $resource = UserResource::class;
protected function handleRecordCreation(array $data): Model
{
try {
return UserData::create($data);
} catch (ValidationException $e) {
$errors = collect($e->errors())->mapWithKeys(function ($messages, $key) {
return ["data.$key" => $messages];
})->toArray();
throw ValidationException::withMessages($errors);
}
}
}