Laravel 5.4：按标签搜索

Question

This works fine but what I want to know is if there is a better way to do a search for tags in Laravel. Thanks.

Tag model:

class Tag extends Model
{

    public function noticias()
    {
        return $this->morphedByMany('App\Models\Noticia', 'taggable');
    }

    // ...
}

Noticia model:

class Noticia extends Model
{

    public function tags()
    {
        return $this->morphToMany('App\Models\Tag', 'taggable');
    }

    // ...

}

SearchController

public function tag($id){

    $noticias= Noticia::all();
    $data['noticias'] = [];
    foreach($noticias as $value){
        foreach($value->tags as $tag){
            if($tag->id == $id){
                $data['noticias'][] = $value;
            }
        }
    }

    return view('web.buscar.index');
}

Answer 1

use whereHas()

$noticias= Noticia::with('tags')->whereHas('tags', function($q) use ($id){
           $q->where('id',$id);
      })->get();

To get only ids use pluck()

$noticias= Noticia::whereHas('tags', function($q) use ($id){
           $q->where('id',$id);
      })->pluck('id');