UserRequest.php (rules)

UserRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class UserRequest extends FormRequest
{
    public function rules(): array
    {
        $rules = [
            'first_name' => ['string', 'min:3'],
            'last_name' => ['string', 'min:3']
        ];

        if ($this->method() === 'POST') {
            $rules['first_name'][] = 'required';
            $rules['first_name'][] = 'unique:users,email';
        }

        if ($this->method() === 'PUT') {
            $rules['first_name'][] = Rule::unique('users', 'email')
                ->ignore($this->route('user'));
        }

        return $rules;
    }
}