Meta component

Meta.php

<?php

namespace App\Forms\Components;

use Filament\Forms;
use Illuminate\Contracts\Support\Htmlable;
use Illuminate\Support\HtmlString;

class Meta
{
    public static function make(): Forms\Components\Section
    {
        return Forms\Components\Section::make('SEO')
            ->collapsible()
            ->relationship('seo')
            ->schema([
                Forms\Components\TextInput::make('title')
                    ->label('Title')
                    ->live(debounce: 500)
                    ->helperText(function (?string $state): Htmlable {
                        $count = strlen($state);
                        $color = $count > 60 ? 'rgb(var(--warning-500))' : 'inherit';

                        return new HtmlString('<span style="color: ' . $color . ';">' . $count . ' / 60 characters</span>');
                    }),
                Forms\Components\Textarea::make('description')
                    ->label('Description')
                    ->rows(3)
                    ->live(debounce: 500)
                    ->helperText(function (?string $state): Htmlable {
                        $count = strlen($state);
                        $color = $count > 160 ? 'rgb(var(--warning-500))' : 'inherit';

                        return new HtmlString('<span style="color: ' . $color . ';">' . $count . ' / 160 characters</span>');
                    }),
                Forms\Components\CheckboxList::make('robots')
                    ->options([
                        'noindex' => 'No Index',
                        'nofollow' => 'No Follow',
                    ])
                    ->gridDirection('row')
                    ->columns(2)
                    ->afterStateHydrated(function ($component, $state) {
                        if ($state && ! is_array($state)) {
                            $state = explode(',', $state);
                        }

                        $component->state($state ?? []);
                    })
                    ->dehydrateStateUsing(function (?array $state): ?string {
                        return filled($state) ? implode(',', $state) : null;
                    }),
            ]);
    }
}

Yet another way of firing updated status messages on inputs, but enforcing validation is something I used like this:

            ->rule(
                function () {
                    return static function (string $attribute, $value, Closure $fail) {
                        $count = \str_word_count($value);
                        if ($count < 100) {
                            $fail('The description must contain at least 100 words. You have '.$count.'. Please describe more!');
                        }
                    };
                }
            )