数据不是来自laravel关系中的2个表+ 1个数据透视表

Question

Here is the thread for reference: Simple tags system in Laravel 5.2

I can't make those tags displayed on the page. It's always return null here is the source I have:

Item model

public function tags() {

    return $this->belongsToMany('App\Tag', 'item_tag');
}

Tag model

class Tag extends Model {

    protected $table = 'tags';
    protected $primaryKey = 'id';

    protected $fillable = [
        'tag'
    ];

    public function itemTags() {

        return $this->belongsToMany('App\Item', 'item_tag');

    }    

}  

ItemController

public function show($id)
{
     $item = Item::with('tags')->find($id);
     return view('item', compact('item'));
}

And the view

@foreach($item->tags() as $showTags)         
      {{ $showTags->tag }}                  
@endforeach 

dd($item) return two tags in relation so I assume they are there in collection but the return is either empty space on the page or null.

Item {#322 ▼
  #primaryKey: "id"
  #table: "items"
  #fillable: array:9 [▶]
  #connection: null
  #keyType: "int"
  #perPage: 15
  +incrementing: true
  +timestamps: true
  #attributes: array:25 [▶]
  #original: array:25 [▶]
  #relations: array:1 [▼
    "tags" => Collection {#332 ▼
      #items: array:2 [▼
        0 => Tag {#330 ▶}  // tag 1
        1 => Tag {#331 ▶}  // tag 2
      ]
    }
  ]
   ...
}

Please suggest what can be the problem.

Answer 1

After eager loading you don't need to invoke the relationship, its available as a collection:

// $item->tags not $item->tags() since its a collection
@foreach($item->tags as $showTags)         
      {{ $showTags->tag }}                  
@endforeach 

// if you don'nt eager load, then you can call the relationship
@foreach($item->tags()->get() as $showTags)
...