Php laravelmorpto返回Null

我使用的是Laravel5.4，很难弄清楚为什么我的Morpto关系无论做什么都会返回null。关系的倒数是可以的，但是当我试图检索多态关系的所有者时，它是空的

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;

完整名称空间存储在数据库中，_type和_id实际上在列中具有适当的组织类型和id（即“App\Account”和“456”）。因此，我知道数据库记录和返回的Opportunity对象在列中具有正确的组织（我可以在数据库中正确地看到它），但无论我做什么，如果我尝试检索组织，它都是空的

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;

这是输出。您会注意到该组织位于属性中，但该关系为null，我无法让它返回，甚至在查询中添加->with（'Organization'）。它甚至似乎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

---

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。当所有者被查询时

App\Opportunity::findOrFail(1)->Organization

看起来Eloquent在寻找organization_type和organization_id（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用大写字母创建的。当我在数据库中将其更改为小写时，将返回结果。但不确定如何改变这种行为，它似乎是在从5.2升级后引入的

编辑：5.3中引入了一个变化，蛇的类型和id似乎是我经历的根本原因

---

将您的Morpto更改为基于此文档，以防止混淆laravel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');
    }
}

---

在花了两天半的时间探索了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