Question

这很好但我想知道的是，如果有更好的方法在Laravel中搜索标签。感谢。

标记模型：

class Tag extends Model
{

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

    // ...
}

Noticia 型号：

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

试试这个，

public function tag($id){
   $noticicas = Noticia::has(['tags'=> function($query) use($id){
      return $query->where('id',$id);
   }])->get();
   dd($noticicas);

   //you can also, get the tag with the id you send, and then get all the `Noticias` for it
   $tag = Tag::find($id);
   $noticias = $tag->noticias->with(["tags"]); // the with is in case you want to show all the tags from the news
}

Answer 2

使用whereHas()

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

仅限ids使用pluck()

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

Laravel 5.4：按标签搜索

2 个答案: