62 lines
1.4 KiB
PHP
62 lines
1.4 KiB
PHP
<?php namespace BookStack\Entities;
|
|
|
|
use Illuminate\Support\Str;
|
|
|
|
class SlugGenerator
|
|
{
|
|
|
|
protected $entity;
|
|
|
|
/**
|
|
* SlugGenerator constructor.
|
|
* @param $entity
|
|
*/
|
|
public function __construct(Entity $entity)
|
|
{
|
|
$this->entity = $entity;
|
|
}
|
|
|
|
/**
|
|
* Generate a fresh slug for the given entity.
|
|
* The slug will generated so it does not conflict within the same parent item.
|
|
*/
|
|
public function generate(): string
|
|
{
|
|
$slug = $this->formatNameAsSlug($this->entity->name);
|
|
while ($this->slugInUse($slug)) {
|
|
$slug .= '-' . substr(md5(rand(1, 500)), 0, 3);
|
|
}
|
|
return $slug;
|
|
}
|
|
|
|
/**
|
|
* Format a name as a url slug.
|
|
*/
|
|
protected function formatNameAsSlug(string $name): string
|
|
{
|
|
$slug = Str::slug($name);
|
|
if ($slug === "") {
|
|
$slug = substr(md5(rand(1, 500)), 0, 5);
|
|
}
|
|
return $slug;
|
|
}
|
|
|
|
/**
|
|
* Check if a slug is already in-use for this
|
|
* type of model within the same parent.
|
|
*/
|
|
protected function slugInUse(string $slug): bool
|
|
{
|
|
$query = $this->entity->newQuery()->where('slug', '=', $slug);
|
|
|
|
if ($this->entity instanceof BookChild) {
|
|
$query->where('book_id', '=', $this->entity->book_id);
|
|
}
|
|
|
|
if ($this->entity->id) {
|
|
$query->where('id', '!=', $this->entity->id);
|
|
}
|
|
|
|
return $query->count() > 0;
|
|
}
|
|
}
|