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<?php |
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namespace Spatie\Sluggable; |
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use Illuminate\Support\Str; |
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use Illuminate\Database\Eloquent\Model; |
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use Spatie\Sluggable\SlugOptions; |
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trait HasSlug |
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{ |
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protected SlugOptions $slugOptions; |
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abstract public function getSlugOptions(): SlugOptions; |
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protected static function bootHasSlug() |
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{ |
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static::creating(function (Model $model) { |
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$model->generateSlugOnCreate(); |
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}); |
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static::updating(function (Model $model) { |
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$model->generateSlugOnUpdate(); |
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}); |
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} |
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protected function generateSlugOnCreate() |
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{ |
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$this->slugOptions = $this->getSlugOptions(); |
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if (! $this->slugOptions->generateSlugsOnCreate) { |
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return; |
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} |
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$this->addSlug(); |
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} |
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protected function generateSlugOnUpdate() |
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{ |
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$this->slugOptions = $this->getSlugOptions(); |
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if (! $this->slugOptions->generateSlugsOnUpdate) { |
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return; |
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} |
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$this->addSlug(); |
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} |
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public function generateSlug() |
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{ |
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$this->slugOptions = $this->getSlugOptions(); |
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$this->addSlug(); |
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} |
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protected function addSlug() |
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{ |
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$this->ensureValidSlugOptions(); |
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$slug = $this->generateNonUniqueSlug(); |
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if ($this->slugOptions->generateUniqueSlugs) { |
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$slug = $this->makeSlugUnique($slug); |
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} |
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$slugField = $this->slugOptions->slugField; |
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$this->$slugField = $slug; |
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} |
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protected function generateNonUniqueSlug(): string |
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{ |
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$slugField = $this->slugOptions->slugField; |
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if ($this->hasCustomSlugBeenUsed() && ! empty($this->$slugField)) { |
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return $this->$slugField; |
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} |
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return Str::slug($this->getSlugSourceString(), $this->slugOptions->slugSeparator, $this->slugOptions->slugLanguage); |
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} |
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protected function hasCustomSlugBeenUsed(): bool |
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{ |
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$slugField = $this->slugOptions->slugField; |
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return $this->getOriginal($slugField) != $this->$slugField; |
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} |
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protected function getSlugSourceString(): string |
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{ |
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if (is_callable($this->slugOptions->generateSlugFrom)) { |
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$slugSourceString = call_user_func($this->slugOptions->generateSlugFrom, $this); |
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return substr($slugSourceString, 0, $this->slugOptions->maximumLength); |
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} |
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$slugSourceString = collect($this->slugOptions->generateSlugFrom) |
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->map(fn(string $fieldName): string => data_get($this, $fieldName, '')) |
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->implode($this->slugOptions->slugSeparator); |
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return substr($slugSourceString, 0, $this->slugOptions->maximumLength); |
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} |
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protected function makeSlugUnique(string $slug): string |
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{ |
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$originalSlug = $slug; |
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$i = 1; |
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while ($this->otherRecordExistsWithSlug($slug) || $slug === '') { |
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$slug = $originalSlug.$this->slugOptions->slugSeparator.$i++; |
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} |
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return $slug; |
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} |
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protected function otherRecordExistsWithSlug(string $slug): bool |
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{ |
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$key = $this->getKey(); |
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if ($this->incrementing) { |
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$key ??= '0'; |
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} |
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$query = static::where($this->slugOptions->slugField, $slug) |
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->where($this->getKeyName(), '!=', $key) |
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->withoutGlobalScopes(); |
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if ($this->usesSoftDeletes()) { |
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$query->withTrashed(); |
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} |
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return $query->exists(); |
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} |
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protected function usesSoftDeletes() |
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{ |
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if (in_array('Illuminate\Database\Eloquent\SoftDeletes', class_uses($this))) { |
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return true; |
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} |
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return false; |
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} |
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protected function ensureValidSlugOptions() |
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{ |
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if (is_array($this->slugOptions->generateSlugFrom) && ! count($this->slugOptions->generateSlugFrom)) { |
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throw InvalidOption::missingFromField(); |
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} |
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if (! strlen($this->slugOptions->slugField)) { |
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throw InvalidOption::missingSlugField(); |
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} |
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if ($this->slugOptions->maximumLength <= 0) { |
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throw InvalidOption::invalidMaximumLength(); |
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} |
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} |
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} |
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spatie /
laravel-sluggable
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