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TagRepo.php
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<?php
namespace BookStack\Actions;
use BookStack\Auth\Permissions\PermissionService;
use BookStack\Entities\Models\Entity;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\DB;
class TagRepo
{
protected $tag;
protected $permissionService;
/**
* TagRepo constructor.
*/
public function __construct(Tag $tag, PermissionService $ps)
{
$this->tag = $tag;
$this->permissionService = $ps;
}
/**
* Get tag name suggestions from scanning existing tag names.
* If no search term is given the 50 most popular tag names are provided.
*/
public function getNameSuggestions(?string $searchTerm): Collection
{
$query = $this->tag->newQuery()
->select('*', DB::raw('count(*) as count'))
->groupBy('name');
if ($searchTerm) {
$query = $query->where('name', 'LIKE', $searchTerm . '%')->orderBy('name', 'desc');
} else {
$query = $query->orderBy('count', 'desc')->take(50);
}
$query = $this->permissionService->filterRestrictedEntityRelations($query, 'tags', 'entity_id', 'entity_type');
return $query->get(['name'])->pluck('name');
}
/**
* Get tag value suggestions from scanning existing tag values.
* If no search is given the 50 most popular values are provided.
* Passing a tagName will only find values for a tags with a particular name.
*/
public function getValueSuggestions(?string $searchTerm, ?string $tagName): Collection
{
$query = $this->tag->newQuery()
->select('*', DB::raw('count(*) as count'))
->groupBy('value');
if ($searchTerm) {
$query = $query->where('value', 'LIKE', $searchTerm . '%')->orderBy('value', 'desc');
} else {
$query = $query->orderBy('count', 'desc')->take(50);
}
if ($tagName) {
$query = $query->where('name', '=', $tagName);
}
$query = $this->permissionService->filterRestrictedEntityRelations($query, 'tags', 'entity_id', 'entity_type');
return $query->get(['value'])->pluck('value');
}
/**
* Save an array of tags to an entity.
*/
public function saveTagsToEntity(Entity $entity, array $tags = []): iterable
{
$entity->tags()->delete();
$newTags = collect($tags)->filter(function ($tag) {
return boolval(trim($tag['name']));
})->map(function ($tag) {
return $this->newInstanceFromInput($tag);
})->all();
return $entity->tags()->saveMany($newTags);
}
/**
* Create a new Tag instance from user input.
* Input must be an array with a 'name' and an optional 'value' key.
*/
protected function newInstanceFromInput(array $input): Tag
{
$name = trim($input['name']);
$value = isset($input['value']) ? trim($input['value']) : '';
return $this->tag->newInstance(['name' => $name, 'value' => $value]);
}
}