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<?php namespace Cviebrock\EloquentTaggable; |
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use Cviebrock\EloquentTaggable\Events\ModelTagged; |
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use Cviebrock\EloquentTaggable\Events\ModelUntagged; |
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use Cviebrock\EloquentTaggable\Exceptions\NoTagsSpecifiedException; |
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use Cviebrock\EloquentTaggable\Models\Tag; |
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use Cviebrock\EloquentTaggable\Services\TagService; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Collection; |
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use Illuminate\Database\Eloquent\Relations\MorphToMany; |
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use Illuminate\Database\Query\JoinClause; |
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/** |
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* Class Taggable |
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* |
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* @package Cviebrock\EloquentTaggable |
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*/ |
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trait Taggable |
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{ |
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/** |
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* Property to control sequence on alias |
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* |
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* @var int |
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*/ |
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private $taggableAliasSequence = 0; |
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/** |
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* Boot the trait. |
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* |
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* Listen for the deleting event of a model, then remove the relation between it and tags |
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*/ |
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protected static function bootTaggable(): void |
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{ |
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static::deleting(function ($model) { |
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if (!method_exists($model, 'runSoftDelete') || $model->isForceDeleting()) { |
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$model->detag(); |
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} |
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}); |
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} |
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/** |
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* Get a collection of all tags the model has. |
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* |
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* @return \Illuminate\Database\Eloquent\Relations\MorphToMany |
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*/ |
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public function tags(): MorphToMany |
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{ |
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$model = config('taggable.model'); |
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return $this->morphToMany($model, 'taggable', 'taggable_taggables', 'taggable_id', 'tag_id') |
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->withTimestamps(); |
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} |
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/** |
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* Attach one or multiple tags to the model. |
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* |
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* @param string|array $tags |
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* |
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* @return self |
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*/ |
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public function tag($tags): self |
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{ |
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$tags = app(TagService::class)->buildTagArray($tags); |
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foreach ($tags as $tagName) { |
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$this->addOneTag($tagName); |
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$this->load('tags'); |
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} |
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event(new ModelTagged($this, $tags)); |
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return $this; |
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} |
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/** |
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* Detach one or multiple tags from the model. |
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* |
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* @param string|array $tags |
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* |
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* @return self |
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*/ |
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public function untag($tags): self |
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{ |
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$tags = app(TagService::class)->buildTagArray($tags); |
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foreach ($tags as $tagName) { |
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$this->removeOneTag($tagName); |
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} |
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event(new ModelUntagged($this, $tags)); |
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return $this->load('tags'); |
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} |
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/** |
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* Remove all tags from the model and assign the given ones. |
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* |
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* @param string|array $tags |
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* |
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* @return self |
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*/ |
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public function retag($tags): self |
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{ |
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return $this->detag()->tag($tags); |
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} |
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/** |
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* Remove all tags from the model. |
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* |
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* @return self |
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*/ |
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public function detag(): self |
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{ |
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$this->tags()->sync([]); |
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return $this->load('tags'); |
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} |
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/** |
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* Add one tag to the model. |
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* |
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* @param string $tagName |
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*/ |
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protected function addOneTag(string $tagName): void |
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{ |
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/** @var Tag $tag */ |
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$tag = app(TagService::class)->findOrCreate($tagName); |
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$tagKey = $tag->getKey(); |
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if (!$this->getAttribute('tags')->contains($tagKey)) { |
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$this->tags()->attach($tagKey); |
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} |
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} |
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/** |
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* Remove one tag from the model |
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* |
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* @param string $tagName |
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*/ |
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protected function removeOneTag(string $tagName): void |
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{ |
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$tag = app(TagService::class)->find($tagName); |
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if ($tag) { |
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$this->tags()->detach($tag); |
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} |
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} |
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/** |
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* Get all the tags of the model as a delimited string. |
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* |
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* @return string |
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*/ |
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public function getTagListAttribute(): string |
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{ |
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return app(TagService::class)->makeTagList($this); |
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} |
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/** |
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* Get all normalized tags of a model as a delimited string. |
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* |
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* @return string |
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*/ |
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public function getTagListNormalizedAttribute(): string |
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{ |
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return app(TagService::class)->makeTagList($this, 'normalized'); |
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} |
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/** |
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* Get all tags of a model as an array. |
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* |
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* @return array |
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*/ |
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public function getTagArrayAttribute(): array |
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{ |
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return app(TagService::class)->makeTagArray($this); |
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} |
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/** |
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* Get all normalized tags of a model as an array. |
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* |
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* @return array |
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*/ |
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public function getTagArrayNormalizedAttribute(): array |
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{ |
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return app(TagService::class)->makeTagArray($this, 'normalized'); |
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} |
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/** |
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* Determine if a given tag is attached to the model. |
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* |
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* @param Tag|string $tag |
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* |
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* @return bool |
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*/ |
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public function hasTag($tag): bool |
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{ |
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if ($tag instanceof Tag) { |
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$normalized = $tag->getAttribute('normalized'); |
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} else { |
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$normalized = app(TagService::class)->normalize($tag); |
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} |
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return in_array($normalized, $this->getTagArrayNormalizedAttribute(), true); |
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} |
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/** |
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* Query scope for models that have all of the given tags. |
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* |
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* @param Builder $query |
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* @param array|string $tags |
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* |
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* @return Builder |
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* @throws \Cviebrock\EloquentTaggable\Exceptions\NoTagsSpecifiedException |
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* @throws \ErrorException |
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*/ |
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public function scopeWithAllTags(Builder $query, $tags): Builder |
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{ |
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/** @var TagService $service */ |
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$service = app(TagService::class); |
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$normalized = $service->buildTagArrayNormalized($tags); |
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// If there are no tags specified, then there |
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// can't be any results so short-circuit |
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if (count($normalized) === 0) { |
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if (config('taggable.throwEmptyExceptions')) { |
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throw new NoTagsSpecifiedException('Empty tag data passed to withAllTags scope.'); |
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} |
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return $query->where(\DB::raw(1), 0); |
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} |
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$tagKeys = $service->getTagModelKeys($normalized); |
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// If some of the tags specified don't exist, then there can't |
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// be any models with all the tags, so so short-circuit |
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if (count($tagKeys) !== count($normalized)) { |
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return $query->where(\DB::raw(1), 0); |
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} |
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$alias = $this->taggableCreateNewAlias(__FUNCTION__); |
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$morphTagKeyName = $this->getQualifiedRelatedPivotKeyNameWithAlias($alias); |
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return $this->prepareTableJoin($query, 'inner', $alias) |
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->whereIn($morphTagKeyName, $tagKeys) |
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->havingRaw("COUNT(DISTINCT {$morphTagKeyName}) = ?", [count($tagKeys)]); |
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} |
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/** |
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* Query scope for models that have any of the given tags. |
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* |
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* @param Builder $query |
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* @param array|string $tags |
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* |
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* @return Builder |
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* @throws \Cviebrock\EloquentTaggable\Exceptions\NoTagsSpecifiedException |
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* @throws \ErrorException |
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*/ |
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public function scopeWithAnyTags(Builder $query, $tags): Builder |
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{ |
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/** @var TagService $service */ |
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$service = app(TagService::class); |
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$normalized = $service->buildTagArrayNormalized($tags); |
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// If there are no tags specified, then there is |
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// no filtering to be done so short-circuit |
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if (count($normalized) === 0) { |
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if (config('taggable.throwEmptyExceptions')) { |
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throw new NoTagsSpecifiedException('Empty tag data passed to withAnyTags scope.'); |
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} |
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return $query->where(\DB::raw(1), 0); |
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} |
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$tagKeys = $service->getTagModelKeys($normalized); |
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$alias = $this->taggableCreateNewAlias(__FUNCTION__); |
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$morphTagKeyName = $this->getQualifiedRelatedPivotKeyNameWithAlias($alias); |
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return $this->prepareTableJoin($query, 'inner', $alias) |
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->whereIn($morphTagKeyName, $tagKeys); |
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} |
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/** |
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* Query scope for models that have any tag. |
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* |
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* @param Builder $query |
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* |
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* @return Builder |
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*/ |
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public function scopeIsTagged(Builder $query): Builder |
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{ |
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$alias = $this->taggableCreateNewAlias(__FUNCTION__); |
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return $this->prepareTableJoin($query, 'inner', $alias); |
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} |
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/** |
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* Query scope for models that do not have all of the given tags. |
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* |
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* @param Builder $query |
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* @param string|array $tags |
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* @param bool $includeUntagged |
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* |
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* @return Builder |
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* @throws \ErrorException |
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*/ |
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public function scopeWithoutAllTags(Builder $query, $tags, bool $includeUntagged = false): Builder |
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{ |
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/** @var TagService $service */ |
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$service = app(TagService::class); |
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$normalized = $service->buildTagArrayNormalized($tags); |
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$tagKeys = $service->getTagModelKeys($normalized); |
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$tagKeyList = implode(',', $tagKeys); |
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$alias = $this->taggableCreateNewAlias(__FUNCTION__); |
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$morphTagKeyName = $this->getQualifiedRelatedPivotKeyNameWithAlias($alias); |
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$query = $this->prepareTableJoin($query, 'left', $alias) |
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->havingRaw("COUNT(DISTINCT CASE WHEN ({$morphTagKeyName} IN ({$tagKeyList})) THEN {$morphTagKeyName} ELSE NULL END) < ?", |
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[count($tagKeys)]); |
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if (!$includeUntagged) { |
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$query->havingRaw("COUNT(DISTINCT {$morphTagKeyName}) > 0"); |
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} |
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return $query; |
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} |
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/** |
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* Query scope for models that do not have any of the given tags. |
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* |
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* @param Builder $query |
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* @param string|array $tags |
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* @param bool $includeUntagged |
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* |
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* @return Builder |
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* @throws \ErrorException |
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*/ |
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public function scopeWithoutAnyTags(Builder $query, $tags, bool $includeUntagged = false): Builder |
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{ |
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/** @var TagService $service */ |
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$service = app(TagService::class); |
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$normalized = $service->buildTagArrayNormalized($tags); |
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$tagKeys = $service->getTagModelKeys($normalized); |
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$tagKeyList = implode(',', $tagKeys); |
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$alias = $this->taggableCreateNewAlias(__FUNCTION__); |
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$morphTagKeyName = $this->getQualifiedRelatedPivotKeyNameWithAlias($alias); |
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$query = $this->prepareTableJoin($query, 'left', $alias) |
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->havingRaw("COUNT(DISTINCT CASE WHEN ({$morphTagKeyName} IN ({$tagKeyList})) THEN {$morphTagKeyName} ELSE NULL END) = 0"); |
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if (!$includeUntagged) { |
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$query->havingRaw("COUNT(DISTINCT {$morphTagKeyName}) > 0"); |
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} |
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return $query; |
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} |
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/** |
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* Query scope for models that does not have have any tags. |
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* |
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* @param Builder $query |
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* |
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* @return Builder |
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*/ |
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public function scopeIsNotTagged(Builder $query): Builder |
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{ |
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$alias = $this->taggableCreateNewAlias(__FUNCTION__); |
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$morphForeignKeyName = $this->getQualifiedForeignPivotKeyNameWithAlias($alias); |
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return $this->prepareTableJoin($query, 'left', $alias) |
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|
->havingRaw("COUNT(DISTINCT {$morphForeignKeyName}) = 0"); |
374
|
|
|
} |
375
|
|
|
|
376
|
|
|
/** |
377
|
|
|
* @param Builder $query |
378
|
|
|
* @param string $joinType |
379
|
|
|
* |
380
|
|
|
* @return Builder |
381
|
|
|
*/ |
382
|
|
|
private function prepareTableJoin(Builder $query, string $joinType, string $alias): Builder |
383
|
|
|
{ |
384
|
|
|
$morphTable = $this->tags()->getTable(); |
385
|
|
|
$morphTableAlias = $morphTable.'_'.$alias; |
386
|
|
|
|
387
|
|
|
$modelKeyName = $this->getQualifiedKeyName(); |
|
|
|
|
388
|
|
|
$morphForeignKeyName = $this->getQualifiedForeignPivotKeyNameWithAlias($alias); |
389
|
|
|
|
390
|
|
|
$morphTypeName = $morphTableAlias.'.'. $this->tags()->getMorphType(); |
391
|
|
|
$morphClass = $this->tags()->getMorphClass(); |
392
|
|
|
|
393
|
|
|
$closure = function(JoinClause $join) use ($modelKeyName, $morphForeignKeyName, $morphTypeName, $morphClass) { |
394
|
|
|
$join->on($modelKeyName, $morphForeignKeyName) |
395
|
|
|
->where($morphTypeName, $morphClass); |
396
|
|
|
}; |
397
|
|
|
|
398
|
|
|
return $query |
399
|
|
|
->select($this->getTable() . '.*') |
|
|
|
|
400
|
|
|
->join($morphTable.' as '.$morphTableAlias, $closure, null, null, $joinType) |
401
|
|
|
->groupBy($modelKeyName); |
402
|
|
|
} |
403
|
|
|
|
404
|
|
|
/** |
405
|
|
|
* Get a collection of all the tag models used for the called class. |
406
|
|
|
* |
407
|
|
|
* @return Collection |
408
|
|
|
*/ |
409
|
|
|
public static function allTagModels(): Collection |
410
|
|
|
{ |
411
|
|
|
return app(TagService::class)->getAllTags(static::class); |
412
|
|
|
} |
413
|
|
|
|
414
|
|
|
/** |
415
|
|
|
* Get an array of all tags used for the called class. |
416
|
|
|
* |
417
|
|
|
* @return array |
418
|
|
|
*/ |
419
|
|
|
public static function allTags(): array |
420
|
|
|
{ |
421
|
|
|
/** @var \Illuminate\Database\Eloquent\Collection $tags */ |
422
|
|
|
$tags = static::allTagModels(); |
423
|
|
|
|
424
|
|
|
return $tags->pluck('name')->sort()->all(); |
425
|
|
|
} |
426
|
|
|
|
427
|
|
|
/** |
428
|
|
|
* Get all the tags used for the called class as a delimited string. |
429
|
|
|
* |
430
|
|
|
* @return string |
431
|
|
|
*/ |
432
|
|
|
public static function allTagsList(): string |
433
|
|
|
{ |
434
|
|
|
return app(TagService::class)->joinList(static::allTags()); |
435
|
|
|
} |
436
|
|
|
|
437
|
|
|
/** |
438
|
|
|
* Rename one the tags for the called class. |
439
|
|
|
* |
440
|
|
|
* @param string $oldTag |
441
|
|
|
* @param string $newTag |
442
|
|
|
* |
443
|
|
|
* @return int |
444
|
|
|
*/ |
445
|
|
|
public static function renameTag(string $oldTag, string $newTag): int |
446
|
|
|
{ |
447
|
|
|
return app(TagService::class)->renameTags($oldTag, $newTag, static::class); |
448
|
|
|
} |
449
|
|
|
|
450
|
|
|
/** |
451
|
|
|
* Get the most popular tags for the called class. |
452
|
|
|
* |
453
|
|
|
* @param int $limit |
454
|
|
|
* @param int $minCount |
455
|
|
|
* |
456
|
|
|
* @return array |
457
|
|
|
*/ |
458
|
|
|
public static function popularTags(int $limit = null, int $minCount = 1): array |
459
|
|
|
{ |
460
|
|
|
/** @var Collection $tags */ |
461
|
|
|
$tags = app(TagService::class)->getPopularTags($limit, static::class, $minCount); |
462
|
|
|
|
463
|
|
|
return $tags->pluck('taggable_count', 'name')->all(); |
464
|
|
|
} |
465
|
|
|
|
466
|
|
|
/** |
467
|
|
|
* Get the most popular tags for the called class. |
468
|
|
|
* |
469
|
|
|
* @param int $limit |
470
|
|
|
* @param int $minCount |
471
|
|
|
* |
472
|
|
|
* @return array |
473
|
|
|
*/ |
474
|
|
|
public static function popularTagsNormalized(int $limit = null, int $minCount = 1): array |
475
|
|
|
{ |
476
|
|
|
/** @var Collection $tags */ |
477
|
|
|
$tags = app(TagService::class)->getPopularTags($limit, static::class, $minCount); |
478
|
|
|
|
479
|
|
|
return $tags->pluck('taggable_count', 'normalized')->all(); |
480
|
|
|
} |
481
|
|
|
|
482
|
|
|
/** |
483
|
|
|
* Returns the Related Pivot Key Name with the table alias. |
484
|
|
|
* |
485
|
|
|
* @param string $alias |
486
|
|
|
* |
487
|
|
|
* @return string |
488
|
|
|
*/ |
489
|
|
|
private function getQualifiedRelatedPivotKeyNameWithAlias(string $alias): string |
490
|
|
|
{ |
491
|
|
|
$morph = $this->tags(); |
492
|
|
|
|
493
|
|
|
return $morph->getTable() . '_' . $alias . |
494
|
|
|
'.' . $morph->getRelatedPivotKeyName(); |
495
|
|
|
} |
496
|
|
|
|
497
|
|
|
/** |
498
|
|
|
* Returns the Foreign Pivot Key Name with the table alias. |
499
|
|
|
* |
500
|
|
|
* @param string $alias |
501
|
|
|
* |
502
|
|
|
* @return string |
503
|
|
|
*/ |
504
|
|
|
private function getQualifiedForeignPivotKeyNameWithAlias(string $alias): string |
505
|
|
|
{ |
506
|
|
|
$morph = $this->tags(); |
507
|
|
|
|
508
|
|
|
return $morph->getTable() . '_' . $alias . |
509
|
|
|
'.' . $morph->getForeignPivotKeyName(); |
510
|
|
|
} |
511
|
|
|
|
512
|
|
|
/** |
513
|
|
|
* Create a new alias to use on scopes to be able to combine many scopes |
514
|
|
|
* |
515
|
|
|
* @param string $scope |
516
|
|
|
* |
517
|
|
|
* @return string |
518
|
|
|
*/ |
519
|
|
|
private function taggableCreateNewAlias(string $scope) |
520
|
|
|
{ |
521
|
|
|
$this->taggableAliasSequence++; |
522
|
|
|
$alias = strtolower($scope) . '_' . $this->taggableAliasSequence; |
523
|
|
|
|
524
|
|
|
return $alias; |
525
|
|
|
} |
526
|
|
|
} |
527
|
|
|
|
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.