Question 171029 in Laravel Question posted in
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Why is $data undefined when creating detail by ID in Laravel?

I want to display the detail page based on the table id that is already available. However, the Undefined variable $data error appears when I enter code like this

Controller

public function show($id)
    {
        return view('daftar_mahasiswa', [
            'data' => Mahasiswa::findOrFail($id),
        ]);
    }

Route

Route::get('/daftar_mahasiswa/{id}', [MahasiswaController::class, 'show']);

daftar_mahasiswa.blade.php

<button class="action" style="background: #3C91E6">
      <a href="daftar_mahasiswa/{{ $data->id }}" style="color: inherit">
          <i class='bx bxs-detail'></i>
          Detail
      </a>
</button>

I hope the code can display the details of the selected data based on the ID.

Tags:

2

Answers


  1. 0

    The $data variable is not defined here.

    You can modify your Controller code like this:

    Controller:

        public function show($id)
    {
      $data = Mahasiswa::findOrFail($id);
      return view('daftar_mahasiswa', compact('data'));
    }

    daftar_mahasiswa.blade.php

    <button class="action" style="background: #3C91E6">
<a href="{{ url('daftar_mahasiswa', $data->id) }}" style="color: 
inherit">
    <i class='bx bxs-detail'></i>
    Detail
</a>
</button>
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  2. 0

    the code you provided, the Mahasiswa::findOrFail($id) call is correctly retrieving the data for the specified $id, but you need to make sure that the $data variable is passed to the view correctly

    To fix the issue

    public function show($id)
{
    $data = Mahasiswa::findOrFail($id);
    return view('daftar_mahasiswa', compact('data'));
}

    Additionally you can add a null check in the view and handle the case when the $data variable is not available,

    <button class="action" style="background: #3C91E6">
    @if($data)
        <a href="{{ url('daftar_mahasiswa', $data->id) }}" style="color: inherit">
            <i class='bx bxs-detail'></i>
            Detail
        </a>
    @else
        <span>No data available</span>
    @endif
</button>
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