Laravel issue Trying to get property 'id' of non-object - php

Question

Here I'm trying to loop supplier names using a foreach loop but I'm getting following error
<tbody style="font-size:small">
#foreach($material as $material)
<tr class="odd" role="row">
{!! Form::open(['route'=>'materialsupplier.store','class'=>'form-horizontal p-t-20']) !!}
<td>{{ $material->name }}<input type="hidden" value="{{ $material->id }}" name="mat_id"></td>
<td></td>
<td>
<div class="form-group{{ $errors->has('sup_id') ? ' has-error' : '' }}">
<div >
<select class="form-control js-cities" name="sup_id">
<option value="" selected disabled>Select Supplier</option>
#foreach ($supplier as $supplier)
<option value="{{ $supplier->id}}">{{$supplier->company_name}}</option>
#endforeach
</select>
</div>
</div>
</td>
<td>
{{ Form::submit('Save',['class'=>'far fa-trash-alt btn btn-info btn-sm btn-rounded m-b-1 m-l-5']) }}
</td>
{!! Form::close() !!}
</tr>
#endforeach
</tbody>
after that i chaged my code like this
<select class="form-control js-cities" name="sup_id">
<option value="" selected disabled>Select Supplier</option>
#foreach ($supplier as $supplier)
<option value="{{ $supplier}}">{{$supplier}}</option>
#endforeach
</select>
output
controller
public function index()
{
$material = Material::all();
$supplier = Supplier::all();
return view('materialMgmt.material_suppliyer.create')->withMaterial($material)->withSupplier($supplier);
}
How can I avoid getting this error?

Answer 1

I changed the code as following and its worked
<select class="form-control js-cities" name="sup_id">
<option value="" selected disabled>Select Supplier</option>
#foreach ($supplier as $sup)
<option value="{{ $sup->id}}">{{$sup->company_name}}</option>
#endforeach
</select>
Sir FatemehNB, Thank for your suggestion.