Question 182034 in Laravel Question posted in
The official Laravel Documentation can be found here.

Laravel – eloquent attempt to read property on int

I want to ask for your help.

I’m studying laravel, i am using laravel 10, and I need to retrieve related data, the application and data that I’m working on are related to students in a school. I want to retrieve student data with their angkatan. here’s the context I’m thinking about.

all students each have 1 angkatan, whether it’s the same as other students or different.

here is the code that i wrote on the model and controller in my learning project.

Model

namespace AppModels;

use IlluminateDatabaseEloquentFactoriesHasFactory;
use IlluminateDatabaseEloquentModel;

class Siswa extends Model
{
    use HasFactory;

    protected $table = 'siswa';
    protected $primaryKey = 'id';

    // semua siswa memiliki 1 angkatan
    public function angkatan()
    {
        return $this->belongsTo(Angkatan::class, 'angkatan', 'id');
    }
}

Controller

namespace AppHttpControllers;

use AppModelsSiswa;
use IlluminateHttpRequest;

class SiswaController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index()
    {
        // siswa with angkatan where angkatan = angkatan.id
        $siswa = Siswa::with('angkatan')->first();
        $test = "ini adalah test";
      
        return view('siswa', compact('siswa', 'test'));
    }
}

when I did dump() I found that the batch was obtained successfully, here is the result of the dump that I got

{
    "id": 1,
    "user_id": 15,
    "nis": "4994247",
    "nama": "Radika Mandala",
    "kelas": "XI TKJ",
    "angkatan": {
        "id": 2,
        "tahun": "2023",
        "nama": "2023 Gelombang 2",
        "tgl_mulai": "2023-05-05",
        "tgl_selesai": "2023-07-05",
        "created_at": "2023-06-04T11:20:43.000000Z",
        "updated_at": "2023-06-04T11:20:43.000000Z",
        "deleted_at": null
    },
    "no_hp": "+96168988859",
    "alamat": "Ki. Industri No. 881",
    "laporan": null,
    "created_at": "2023-06-04T11:20:44.000000Z",
    "updated_at": "2023-06-04T11:20:44.000000Z",
    "deleted_at": null
}

however when trying to access it directly in the view linked with the following code {{ dump($siswa->angkatan->tahun) }} I get an error Attempt to read property "tahun" on int

I didn’t find the problem where, because from the results returned from the controller data angkatan should have been successfully obtained, unfortunately in this case I only used the database that was already created, without making migrations or other things in Laravel that I was working on,

Tags:

2

Answers


  1. 0

    The relationship between the Siswa model and the Angkatan model is not being set correctly. The error message "Attempt to read property ‘tahun’ on int" means that the angkatan attribute of the $siswa object is an integer instead of an object.

    Make sure that the foreign key column angkatan in the siswa table references the primary key column id in the angkatan table.

    Create a migration file to add the foreign key column to the siswa table. Run the following command to generate the migration file:

    php artisan make:migration add_angkatan_to_siswa --table=siswa

    In the generated migration file, add this inside the up() function

    public function up()
{
    Schema::table('siswa', function (Blueprint $table) {
        $table->foreignId('angkatan')->constrained('angkatan');
    });
}

    Finally, run the command in your project

    php artisan migrate

    In the Siswa model, update the belongsTo relationship definition.

    public function angkatan()
{
    return $this->belongsTo(Angkatan::class, 'angkatan', 'id');
}
    Login or Signup to reply.
  2. 0

    You can’t have a field (attribute) and a relationship with the same name since you are trying to access your data via dynamic properties, $model->property. It can only resolve that to either the actual field (attribute) or the relationship.

    The column on the table should be ankatan_id and the relationship would be as it currently is ankatan. Now there is no ambiguity, ankatan_id is the field and ankatan is the relationship.

    $model->ankatan_id // field (attribute)
$model->ankatan    // relationship dynamic property

    If you can’t change your schema you could change the name of the relationship.

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search