嵌套关系 Laravel Eloquent 查询

Question

我有 3 个模型：Pizzerie、Pizze、Ingredients 每个都有自己的关系

class Pizzerie extends Model {
  protected $table = 'pizzerie';
  public function pizze()
  {
      return $this->hasMany('App\Pizze', 'pizzerie_id');
  }
}

class Pizze extends Model {
  protected $table = 'pizze';
  public function ingredienti()
  {
      return $this->belongsToMany('App\Ingredienti', 'pizze_ingredienti');
  }
  public function pizzeria()
  {
      return $this->belongsTo('App\Pizzerie');
  }
}

class Ingredienti extends Model {
  protected $table = 'ingredienti';
  public function pizze()
  {
      return $this->belongsToMany('App\Pizze', 'pizze_ingredienti');
  }
}

我正在寻找允许我像这样在我的视图中循环的查询

@foreach($data as $pizzeria)
<p>{{ $pizzeria->name }} Has pizze: </p>
  @foreach($pizzeria as $pizze)
  <p>{{ $pizza->name }} Has ingredients: </p>
    <ul>
    @foreach($pizza as $ingredient)
    <li>{{ $ingredient->name }}</li>
    @endforeach
    </ul>
  @endforeach
@endforeach

不知道如何得到它:/

Answer 1

试试这个，它会在每个 foreach 循环中得到下一个关系 Collection。

@foreach($data as $pizzeria)
<p>{{ $pizzeria->name }} Has pizze: </p>
  @foreach($pizzeria->pizze as $pizze)
  <p>{{ $pizza->name }} Has ingredients: </p>
    <ul>
    @foreach($pizze->ingredienti as $ingredient)
    <li>{{ $ingredient->name }}</li>
    @endforeach
    </ul>
  @endforeach
@endforeach

Answer 2

我无法对 Margus Pala 的回答发表评论 :( 但您的查询应该像

$data = \App\pizzerie::with('pizze. ingredienti')->get();

由于预加载问题，这是一个重要的问题（循环中的查询过多）

Eager loading in documentation

嵌套关系 Laravel Eloquent 查询

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