2FAuth/app/Http/Requests/UserUpdateRequest.php

<?php

namespace App\Http\Requests;

use App\Rules\ComplyWithEmailRestrictionPolicy;
use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Support\Facades\Auth;
use Illuminate\Validation\Rule;

class UserUpdateRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return Auth::check();
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'name' => [
                'required',
                'string',
                'max:191',
                Rule::unique('users')->ignore($this->user()->id),
            ],
            'email' => [
                'required',
                'email',
                'max:191',
                Rule::unique('users')->ignore($this->user()->id),
                new ComplyWithEmailRestrictionPolicy,
            ],
            'password' => 'required',
        ];
    }

    /**
     * Prepare the data for validation.
     *
     * @return void
     */
    protected function prepareForValidation()
    {
        $this->merge([
            'email' => strtolower($this->email),
        ]);
    }
}