saya lagi buat aplikasi absensi dengan laravel 5.3 cuman stack di pangil data dari database

alur program saya yakni saya input nomor induk absen dan note(optional) jika tombol absen saya klik maka akan pangil NIM di database dan juga sekaligus memberikan input data baru berupa tanggal, jam absen dan note.... pusing nih bantuin donk apa ada yg kurang tepat mohon masukannya ....

ini code view input data dan absen

 <form  method="post" action="{{ route('store') }}" >
        {{csrf_field()}}
        <div class="form-group{{ $errors->has('nim') ? ' has-error' : '' }}">
          <input type="text" name="nim" class="form-control" placeholder="ID Menara Doa 4 Digit">
          {!! $errors->first('nim', '<p class="help-block">:message</p>') !!}
        </div>

             <div class="form-group">
          <input type="text" name="note" class="form-control" placeholder="Catatan">

        </div>

           <button type="submit" class="btn btn-primary" name="btn_in">Absen</button>
              </form>

ini kode modelnya

 <?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Absen extends Model
{

  protected $table = 'absenku';
  protected $fillable = ['date', 'absen_in', 'absen_out', 'note'];

 public function anggota()
   {
   	return $this->belongTo('App\anggota');
   }
}

ini kode controllernya

 <?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Absen;
use App\Anggota;

use App\Http\Requests;

use App\Http\Requests\absen\StoreRequest;

class AbsenmenaraController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
      return view('absenmenara.index');
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {

       $anggota_id = anggota::where('nim');

       DD($anggota_id);

       $date = date("Y-m-d");
       $time = date("H:i:s");
       $note = $request ->note;

       $absen = new absen;

       if (isset($request->btn_in))
       {
            $absen->create([
                'anggota_id' => $anggota_id,
                'date' => $date,
                'absen_in' => $time,
                'note' => $note,
                 ]);
            return "terima kasih sudah absen";
       }
       elseif (isset($request->btn_in))
       {
            return "anda sudah absen";
       }

      return $request ->all();


    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {

    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
    }
}