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