57 lines
1.3 KiB
PHP
57 lines
1.3 KiB
PHP
<?php
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namespace BookStack\Entities\Tools;
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use BookStack\Entities\Models\BookChild;
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use BookStack\Interfaces\Sluggable;
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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(Sluggable $model): string
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{
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$slug = $this->formatNameAsSlug($model->name);
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while ($this->slugInUse($slug, $model)) {
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$slug .= '-' . Str::random(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, Sluggable $model): bool
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{
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$query = $model->newQuery()->where('slug', '=', $slug);
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if ($model instanceof BookChild) {
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$query->where('book_id', '=', $model->book_id);
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}
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if ($model->id) {
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$query->where('id', '!=', $model->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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