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wazum/slug-cascade-contracts
============================

PSR-14 event interface for slug-cascade situations.

v1.0.0(2w ago)01GPL-2.0-or-laterPHPPHP ^8.1

Since May 21Pushed 2w agoCompare

[ Source](https://github.com/wazum/slug-cascade-contracts)[ Packagist](https://packagist.org/packages/wazum/slug-cascade-contracts)[ RSS](/packages/wazum-slug-cascade-contracts/feed)WikiDiscussions main Synced 1w ago

READMEChangelog (1)Dependencies (5)Versions (2)Used By (0)

slug-cascade-contracts
======================

[](#slug-cascade-contracts)

PSR-14 event interface for slug-cascade situations.

An interface-only package. A producer dispatches an event implementing the interface when a parent page's slug has been (or is about to be) changed and descendants need their slugs adjusted. A consumer subscribes to the interface and can short-circuit synchronous propagation by calling `deferCascade()`.

Install
-------

[](#install)

```
composer require wazum/slug-cascade-contracts

```

PHP 8.1+. No framework dependency; works with any PSR-14 event dispatcher (TYPO3 v12/v13/v14, Symfony, Laminas, …).

The contract
------------

[](#the-contract)

```
namespace Wazum\SlugCascadeContracts;

use Psr\EventDispatcher\StoppableEventInterface;

interface SlugCascadeEvent extends StoppableEventInterface
{
    public function getPageId(): int;
    public function getOldParentSlug(): string;
    public function getNewParentSlug(): string;
    public function getCorrelationId(): string;
    public function deferCascade(): void;
}
```

`deferCascade()` flips `isPropagationStopped()` to `true`. The dispatch site reads that flag and skips its own synchronous cascade when a consumer has taken over.

Producer side
-------------

[](#producer-side)

```
namespace Acme\Producer\Event;

use Wazum\SlugCascadeContracts\SlugCascadeEvent;

final class SlugChanged implements SlugCascadeEvent
{
    private bool $cascadeDeferred = false;

    public function __construct(
        public readonly int $pageId,
        public readonly string $oldParentSlug,
        public readonly string $newParentSlug,
        public readonly string $correlationId,
    ) {}

    public function getPageId(): int { return $this->pageId; }
    public function getOldParentSlug(): string { return $this->oldParentSlug; }
    public function getNewParentSlug(): string { return $this->newParentSlug; }
    public function getCorrelationId(): string { return $this->correlationId; }

    public function deferCascade(): void { $this->cascadeDeferred = true; }
    public function isPropagationStopped(): bool { return $this->cascadeDeferred; }
}
```

Dispatch site:

```
$event = new SlugChanged($pageId, $oldSlug, $newSlug, $correlationId);
$this->eventDispatcher->dispatch($event);
if ($event->isPropagationStopped()) {
    return;
}
$this->rebuildChildSlugsSynchronously(...);
```

Consumer side
-------------

[](#consumer-side)

```
namespace Acme\Consumer\EventListener;

use Wazum\SlugCascadeContracts\SlugCascadeEvent;

final class HandleCascade
{
    public function __invoke(SlugCascadeEvent $event): void
    {
        // … handle the cascade …
        $event->deferCascade();
    }
}
```

Service registration (TYPO3):

```
Acme\Consumer\EventListener\HandleCascade:
  tags:
    - name: event.listener
      event: Wazum\SlugCascadeContracts\SlugCascadeEvent
```

License
-------

[](#license)

GPL-2.0-or-later

###  Health Score

38

—

LowBetter than 83% of packages

Maintenance96

Actively maintained with recent releases

Popularity2

Limited adoption so far

Community6

Small or concentrated contributor base

Maturity42

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

###  Release Activity

Cadence

Unknown

Total

1

Last Release

20d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/f4ea950f22b43e010ba4f0a6effb0928a6a1d11f64d36cec0d030b757bdfa85e?d=identicon)[wazum](/maintainers/wazum)

---

Top Contributors

[![wazum](https://avatars.githubusercontent.com/u/146727?v=4)](https://github.com/wazum "wazum (1 commits)")

---

Tags

eventslugcontractspsr-14typo3

###  Code Quality

TestsPHPUnit

Static AnalysisPHPStan, Psalm

Code StylePHP CS Fixer

Type Coverage Yes

### Embed Badge

![Health badge](/badges/wazum-slug-cascade-contracts/health.svg)

```
[![Health](https://phpackages.com/badges/wazum-slug-cascade-contracts/health.svg)](https://phpackages.com/packages/wazum-slug-cascade-contracts)
```

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