php – Laravel模型保存模型时的尾随数据

我有一些像这样的代码

    $editStuState = StuAtt::where('studentId' , '=' , $id)->first();
    $editStuState -> leave +=1;
    $editStuState -> present = $editStuState -> present-1;
    $editStuState->update();
                            //OR
    $editStuState->save();
    return 'this is good';

我无法保存或更新我的数据,
当我删除更新和保存相关的行时,它可以打印文本.

这是dd($editStuState)数据

StuAtt {#382 ▼
  #table: "stu_attendance"
  #connection: "mysql"
  #primaryKey: "id"
  #keyType: "int"
  +incrementing: true
  #with: []
  #withCount: []
  #perPage: 15
  +exists: true
  +wasRecentlyCreated: false
  #attributes: array:7 [▼
    "id" => "7"
    "studentId" => "1"
    "present" => "2"
    "absent" => "1"
    "leave" => "10"
    "created_at" => "2018-04-16 11:17:41.176898"
    "updated_at" => "2018-04-16 06:47:41.000000"
  ]
  #original: array:7 [▼
    "id" => "7"
    "studentId" => "1"
    "present" => "2"
    "absent" => "1"
    "leave" => "10"
    "created_at" => "2018-04-16 11:17:41.176898"
    "updated_at" => "2018-04-16 06:47:41.000000"
  ]
  #changes: []
  #casts: []
  #dates: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [▶]
}

我也得到了这个错误形式laravel 5.6它

InvalidArgumentException
Trailing data

我根据我的研究逐行检查我的代码,我认为与Carbon无关.
我应该怎么解决这个问题？

解决方法:

尾随数据是Carbon错误,因为您可能使用Postgres并且您的日期返回毫秒.

"created_at" => "2018-04-19 07:01:19.929554"

您可以将以下方法添加到(基础)模型中.

public function getDateFormat()
{
     return 'Y-m-d H:i:s.u';
}

标签：php,model,laravel-5,trailing,invalidargumentexception
来源： https://codeday.me/bug/20190527/1162201.html