Generating slugs from a title in Filament

Published on by

The Filament documentation offers a nice copy-and-paste solution for generating slugs from a title.

This example sets the title field to be a Livewire Live field, and then, as you enter characters, it generates a slug and sets it to another form field.

use Filament\Forms\Components\TextInput;
use Filament\Forms\Set;
use Illuminate\Support\Str;
 
TextInput::make('title')
->live()
->afterStateUpdated(fn (Set $set, ?string $state) => $set('slug', Str::slug($state)))
 
TextInput::make('slug')

This works great for most situations, but I wanted to take this a step further and only dynamically change the slug if it’s either a new entry or if it’s not been published yet. Otherwise, if a slug gets changed, it’ll cause a 404 since the old one doesn’t exist.

To solve this, here is an updated version that only updates if it’s a new record or hasn’t been published:

TextInput::make('title')
->live()
->afterStateUpdated(function (Get $get, Set $set, ?string $operation, ?string $old, ?string $state, ?Model $record) {
 
if ($operation == 'edit' && $record->isPublished()) {
return;
}
 
if (($get('slug') ?? '') !== Str::slug($old)) {
return;
}
 
$set('slug', Str::slug($state));
})

To explain the code, the afterStateUpdated in Filament allows you to inject both the operation (create or edit) and the model, which you can then use to determine if the slug should be updated or left alone. That is what the if statement does:

if ($operation == 'edit' && $record->isPublished())

This says that if we are on the edit page and the Model is published, skip dynamically setting the slug.

You might also want to make the slug field disabled if the record is already published, and that can be accomplished easily:

TextInput::make('slug')
->required()
->maxLength(255)
->unique(Article::class, 'slug', fn ($record) => $record)
->disabled(fn (?string $operation, ?Model $record) => $operation == 'edit' && $record->isPublished())

Thanks to Alex Six for helping me set this up and work.

Eric L. Barnes photo

Eric is the creator of Laravel News and has been covering Laravel since 2012.

Cube

Laravel Newsletter

Join 40k+ other developers and never miss out on new tips, tutorials, and more.

image
Paragraph

Manage your Laravel app as if it was a CMS – edit any text on any page or in any email without touching Blade or language files.

Visit Paragraph
Laravel Forge logo

Laravel Forge

Easily create and manage your servers and deploy your Laravel applications in seconds.

Laravel Forge
Tinkerwell logo

Tinkerwell

The must-have code runner for Laravel developers. Tinker with AI, autocompletion and instant feedback on local and production environments.

Tinkerwell
No Compromises logo

No Compromises

Joel and Aaron, the two seasoned devs from the No Compromises podcast, are now available to hire for your Laravel project. ⬧ Flat rate of $7500/mo. ⬧ No lengthy sales process. ⬧ No contracts. ⬧ 100% money back guarantee.

No Compromises
Kirschbaum logo

Kirschbaum

Providing innovation and stability to ensure your web application succeeds.

Kirschbaum
Shift logo

Shift

Running an old Laravel version? Instant, automated Laravel upgrades and code modernization to keep your applications fresh.

Shift
Bacancy logo

Bacancy

Supercharge your project with a seasoned Laravel developer with 4-6 years of experience for just $2500/month. Get 160 hours of dedicated expertise & a risk-free 15-day trial. Schedule a call now!

Bacancy
Lucky Media logo

Lucky Media

Bespoke software solutions built for your business. We ♥ Laravel

Lucky Media
Lunar: Laravel E-Commerce logo

Lunar: Laravel E-Commerce

E-Commerce for Laravel. An open-source package that brings the power of modern headless e-commerce functionality to Laravel.

Lunar: Laravel E-Commerce
LaraJobs logo

LaraJobs

The official Laravel job board

LaraJobs
Larafast: Laravel SaaS Starter Kit logo

Larafast: Laravel SaaS Starter Kit

Larafast is a Laravel SaaS Starter Kit with ready-to-go features for Payments, Auth, Admin, Blog, SEO, and beautiful themes. Available with Vue and Livewire stacks.

Larafast: Laravel SaaS Starter Kit
SaaSykit: Laravel SaaS Starter Kit logo

SaaSykit: Laravel SaaS Starter Kit

SaaSykit is a Laravel SaaS Starter Kit that comes with all features required to run a modern SaaS. Payments, Beautiful Checkout, Admin Panel, User dashboard, Auth, Ready Components, Stats, Blog, Docs and more.

SaaSykit: Laravel SaaS Starter Kit
Rector logo

Rector

Your partner for seamless Laravel upgrades, cutting costs, and accelerating innovation for successful companies

Rector

The latest

View all →
SQLite Studio is a SQLite Database Explorer image

SQLite Studio is a SQLite Database Explorer

Read article
Running a Single Test, Skipping Tests, and Other Tips and Tricks image

Running a Single Test, Skipping Tests, and Other Tips and Tricks

Read article
View Third-party Relations in model:show - Now Available in Laravel 11.11 image

View Third-party Relations in model:show - Now Available in Laravel 11.11

Read article
Asserting a JSON Response Structure in Laravel image

Asserting a JSON Response Structure in Laravel

Read article
Backpack turns 8 years old, celebrates with 40% discount image

Backpack turns 8 years old, celebrates with 40% discount

Read article
Create a DateTime from a Timestamp With this New Method Coming to PHP 8.4 image

Create a DateTime from a Timestamp With this New Method Coming to PHP 8.4

Read article