I receive this error in the DataTables: DataTables warning: table id=DataTables_Table_0 – Exception Message:
Attempt to read property "name" on null.
Although every position_id has the id from positions table so it shouldn’t be null. If anyone would help, I will appreciate. My model:
public function position()
{
return $this->belongsTo(Position::class);
}
My controller:
class EmployeeController extends Controller
{
public function index(Request $request)
{
if ($request->ajax()) {
$data = Employee::with('position')->select('id','name','email')->get();
return Datatables::of($data)->addIndexColumn()
->addColumn('position', function (Employee $employee) {
return $employee->position->name;
})->addColumn('action', function($data){
$button = '<button type="button" name="edit" id="'.$data->id.'" class="edit btn btn-primary btn-sm"> <i class="bi bi-pencil-square"></i>Edit</button>';
$button .= ' <button type="button" name="edit" id="'.$data->id.'" class="delete btn btn-danger btn-sm"> <i class="bi bi-backspace-reverse-fill"></i> Delete</button>';
return $button;
})
->make(true);
}
return view('admin.employees.index');
}
}
Script:
$(document).ready(function() {
var table = $('.user_datatable').DataTable({
processing: true,
serverSide: true,
ajax: "{{ route('admin.employees.index') }}",
columns: [
{data: 'id', name: 'id'},
{data: 'name', name: 'name'},
{data: 'email', name: 'email'},
{data: 'position', name: 'position.name'},
{data: 'action', name: 'action', orderable: false, searchable: false},
]
});
Migration:
public function up()
{
Schema::create('employees', function (Blueprint $table) {
$table->id();
$table->string('name');
$table->foreignId('position_id')->nullable();
$table->string('phone_number');
$table->date('recruitment_date');
$table->string('email')->unique();
$table->string('image_path')->nullable();
$table->string('payment');
$table->timestamps();
$table->string('admin_created_id')->nullable();
$table->string('admin_updated_id')->nullable();
});
}
3
Answers
The problem was because of the select. Seems like if you're gonna use relationship, you have to add foreign key( which in my case is 'position_id') in your select or cut it completely and just use get. Thanks to all the people who helped in the comments.
this error mean when Datatable trying to fetch data from
$data
there is no collection or arrays that having position it’s inside theget()
methodso, the return above doesn’t have a position or attribute when you look as a
$raw
from that point we will change the controller to be like that
in case if not working you can try to change the db query
but for that I need to dump the $data you can see the result into a Network section in Inspect element from your brawser
dd($data);
Please use
BelongsTo
like this I think you syntax is wrong