form.blade.php

<div>
    <form wire:submit.prevent="save">
        <div class="grid grid-cols-12 gap-2 mt-3">
            <div class="col-span-12">
                <label for="name">{{ __("Nombre") }}</label>

                {!! FormFacade::input('text', 'name', null, ['wire:model.defer' => 'customer.name', 'autocomplete' => 'off']) !!}

                @error('customer.name')
                  <div class="text-theme-21 mt-2">
                    {{ $errors->first('customer.name') }}
                  </div>
                @enderror
            </div>
        </div>

        <div class="input-form mt-3">
            <label for="comments">{{ __("Comentarios") }}</label>
            
            {!! FormFacade::textarea('comments', null, ['wire:model.defer' => 'customer.comments']) !!}
            
            @error('customer.comments')
              <div class="text-theme-24 mt-2">
                {{ $errors->first('customer.comments') }}
              </div>
            @enderror
        </div>

        {!! FormFacade::submit($textButton, ["class" => "btn btn-primary mt-5"]) !!}
    </form>
</div>

Form.php

<?php

namespace Http\Livewire\Customer;

use Illuminate\Contracts\Support\Renderable;
use Illuminate\Http\RedirectResponse;
use Illuminate\Validation\Rule;
use Livewire\Component;
use Livewire\Redirector;
use App\Models\Customer;

class Form extends Component
{
    /**
     * @var Customer
     */
    public Customer $customer;

    /**
     * @var string
     */
    public string $textButton;

    /**
     * @var bool
     */
    public bool $updating = false;

    public function rules(): array {
        if (!$this->updating) {
            return [
                'customer.name' => ['required', 'string', 'min:2', 'max:100'],
                'customer.comments' => 'nullable|string|max:1000',
            ];
        }

        return [
            'customer.name' => ['required', 'string', 'min:2', 'max:100', Rule::unique('customers', 'name')->where(function ($query) {
                return $query
                    ->where("id", "!=", $this->customer->id)
            })],
            'customer.comments' => 'nullable|string|max:1000',
        ];
    }

    public function render(): Renderable {
        return view('livewire.customer.form');
    }

    /**
     * @return RedirectResponse|Redirector
     */
    public function save(): RedirectResponse|Redirector {
        $this->validate();
        $this->customer->save();
      
        // flash|redirect
    }
}