Laravel scout 检查关系是否不为空？

Question

命名空间应用；

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Laravel\Scout\Searchable;

class Event extends Model
{
    protected $table = 'events';
    public $timestamps = true;

    use Searchable;
    use SoftDeletes;

    protected $dates = ['deleted_at'];

    public function entities()
    {
        return $this->belongsTo('App\Entity', 'entity_id');
    }
    public function users()
    {
        return $this->belongsTo('App\User', 'id');
    }
    public function events()
    {
        return $this->belongsTo('App\DirtyEvent', 'id');
    }
    public function toSearchableArray()
    {
        $data = $this->toArray();
        $data['entities'] = $this->entities->toArray();
        return $data;
    }
}

这是我的事件模型，如您所见，我正在使用 toSearchableArray，它是 Laravel scout 函数将 'relations' 导入 algolia。但是问题是有时它是空的。例如

event id 1 has entity_id 1

但在另一个例子中

event id 2 has entity_id = null

如何修改此函数以在将它放入数组之前检查 entities() 关系是否不为空？

Answer 1

请更新 foreign_key 相关
user_id 作为 foreign_key 而不是 id
event_id 作为 foreign_key 而不是 id

public function users()
{
    return $this->belongsTo('App\User', 'user_id');
}
public function events()
{
    return $this->belongsTo('App\DirtyEvent', 'event_id');
}

Answer 2

我认为如果在 toArray() 之前加载关系。

public function toSearchableArray()
{
    $this->entities;

    return $this->toArray();
}

Answer 3

如果我理解正确，这应该有所帮助。如果关系不存在 return 一个空数组并且 scout 不会更新索引

  public function toSearchableArray()
    {

      if(is_null($this->entities)){
        return [];
         }

       $this->entities

     return $this->toArray();
  }

Laravel scout 检查关系是否不为空？

Laravel scout check if relation is not empty?

laravel

laravel-5

algolia

laravel-scout