当print_r文本框的值时，在null上调用成员函数ipcr（）

Question

这是我的create.blade.php：

<script type="text/javascript">

$(document).ready(function(){
    var x =0;  
    $(".add-row").click(function(){
        x++;
        $("table > tbody").append('<input class="form-control" type="text" name="MFI" placeholder="Major Final Output" id="MFI" value="Participate in school activities">'); 
    }); //add input box
}); 

NotesController.php

public function store(Request $request)
  print_r($_POST);
    $ipcrId = Note::find($request->ipcr_id);

    foreach ($request->MFI as $key => $value) {

        $ipcrId->ipcr()->create([

            'MFI' => $request->MFI[$key]    
            // repeat for other fields

        ]);

    }

Note.php

class Note extends Model
{
    protected $fillable= ['successIndicator','actualaccomplishments',
                        'distribution','Q1','E2','T3',' A4','Ave',
                        'Remarks','ipcr_id'];

    public function ipcr()
    {
        return $this->belongsTo(ipcr::class);
    }
}

ipcrController.php

public function store(Request $request)
{

    $dataInput= $request->all();
    $user= Auth::user();
    $user->ipcr()->create($dataInput);

    //$sql = "insert ";

    //ipcr::create($dataInput);


    return redirect('/ipcr');

我得到了

  

NotesController.php第55行中的FatalErrorException：在null上调用成员函数ipcr（）

当我print_r()时，我得到了txtbox的值：

Array ( [MFI] => Array ( [0] => Participate in school activities ) 
        [_token] => mLuXcpnazy73KpKf1GY4WPLeVQcC1601KvbMHX4x 
    )