Livewire centralised validation example

HasValidationRules.php

<?php

namespace App\Http\Livewire\Validation;

trait HasValidationRules
{
  public function getValidationClass()
  {
    return new $this->validationClass();
  }

  public function rules($record = null)
  {
    return $this->getValidationClass()->validationRules($record);
  }
}

Update.php

<?php

namespace App\Http\Livewire\Users;

use Livewire\Component;
use App\Http\Livewire\Traits\HasValidationRules;
use App\Http\Livewire\ValidationRules\UserRules;

class Update extends Component
{
  use HasValidationRules {rules as traitRules; }
  public $validationClass = UserRules::class;
  
  public $user;
  
  public function rules()
  {
    $rules = [
      'some_field_not_defined_in_rules_class' => 'required'
    ];
    return array_merge($rules, $this->traitRules($this->user));
  }
}

UserRules.php

<?php

namespace App\Http\Livewire\ValidationRules;

use Illuminate\Validation\Rule;

class UserRules
{
  public function validationRules($user)
  {
    return [
      'user.name' => 'required',
      'user.status' => Rule::in(['active', 'inactive']),
      'user.email' => [
        'required',
        'email',
        Rule::unique('users', 'email')->ignore($user ?? null)
      ],
    ];
  }
}