Laravel morphTo返回Null

时间:2017-03-14 23:13:24

标签: php laravel eloquent

我正在使用Laravel 5.4并且无法弄清楚为什么无论我做什么,我的morphTo关系总是返回null。关系的反转很好,但是当我尝试检索多态关系的所有者时,它是null。

class Opportunity extends Model {

    public function Organization() {
        return $this->morphTo('Organization');
    }

}

class Account extends model {

    public function Opportunities() {
            return $this->morphMany('App\Opportunity', 'Organization');
        }
}

class Department extends model {

    public function Opportunities() {
            return $this->morphMany('App\Opportunity', 'Organization');
        }
}

$org = App\Opportunity::findOrFail(1)->Organization;

完整命名空间存储在数据库中,_type和_id实际上在列中具有相应的组织类型和ID(即“App \ Account”和“456”)。所以,我知道数据库记录和返回的Opportunity对象在列中有正确的组织(我可以在数据库中正确看到它),但无论我做什么,如果我尝试检索组织它是null。

这是输出。您会注意到组织属于属性,但关系为null,即使向查询添加 - > with('Organization'),我也无法返回。它似乎甚至没有执行查询来获取所有者

#primaryKey: "ID"
  +timestamps: true
  #guarded: []
  #hidden: []
  #visible: []
  #with: []
  #dissociateRelations: []
  #connection: null
  #keyType: "int"
  +incrementing: true
  #perPage: 15
  +exists: true
  +wasRecentlyCreated: true
  #attributes: array:13 [
    "StageID" => 12
    "TypeID" => 1
    "OriginID" => 20
    "Description" => "Interested in scanner fi6140"
    "UserID" => 3
    "SolutionValue" => ".00"
    "MarginValue" => ".00"
    "created_at" => "2010-09-16 11:19:00.000"
    "updated_at" => "2015-09-01 12:32:00.000"
    "_migrationID" => "4299"
    "Organization_type" => "App\Account"
    "Organization_id" => 456
    "ID" => 1
  ]
  #original: array:13 [
    "StageID" => 12
    "TypeID" => 1
    "OriginID" => 20
    "Description" => "Interested in scanner fi6140"
    "UserID" => 3
    "SolutionValue" => ".00"
    "MarginValue" => ".00"
    "created_at" => "2010-09-16 11:19:00.000"
    "updated_at" => "2015-09-01 12:32:00.000"
    "_migrationID" => "4299"
    "Organization_type" => "App\Account"
    "Organization_id" => 456
    "ID" => 1
  ]
  #dateFormat: null
  #events: []
  #observables: []
  #relations: array:3 [
    "Organization" => null
    "Projects" => Illuminate\Database\Eloquent\Collection {#3463
      #items: []
    }
    "Tickets" => Illuminate\Database\Eloquent\Collection {#3443
      #items: []
    }
  ]
  #touches: []
  #forceDeleting: false

3 个答案:

答案 0 :(得分:1)

在花了两个半天的时间探索网上找到的所有解决方案之后,我清空了缓存,一切正常...

php artisan cache:clear

答案 1 :(得分:0)

所以,看起来我可能已经发现了我的问题,但我不知道为什么。

查询所有者时
App\Opportunity::findOrFail(1)->Organization

看起来Eloquent正在寻找organization_type和organization_id(使用小写)而不是Organization_type和_id。但是,我的迁移使用$ table-> morphs('Organization'),因此数据库中的列是使用大写创建的。当我在数据库中将其更改为小写时,我的结果将被返回。不知道如何改变这种行为,似乎是从5.2

升级后引入的

编辑:在5.3中引入了一个变化,蛇案例_type和_id似乎是我经历的根本原因

https://github.com/laravel/framework/pull/15334

答案 2 :(得分:0)

基于文档将词法更改为此,以防止laravel混淆以检测列类型和列ID

class Image extends Model
{
    protected $fillable = [
        "link",
        "imageable_id",
        "imageable_type",
    ];

    public function imagable()
    {
          return $this->morphTo(__FUNCTION__, 'imageable_type', 'imageable_id');
    }
}