How to make dynamic dropdown for update form Laravel - laravel

Question

I am interested in creating a dynamic dropdown on my form. For store.blade.php it's been successful. But for edit.blade.php, I don't know what to do. I can only set values ​​for the first dropdown column, while the second dropdown column, I can't.
Edit: How to display the values ​​for the idkelas column that have been stored in the Update Form?
Blade
Column1
<select name="idkamar" class="form-control">
<option value="">Pilih kamar</option>
#foreach ($kamar as $key=>$value)
<option value="{{ $key }}"{{ ( $listkamar->idkamar == $key ) ? ' selected' : '' }}>{{ $value }}</option>
#endforeach
</select>
Column2
<select name="idkelas" class="form-control"></select>
Javascript
<script type="text/javascript">
$(document).ready(function() {
$('select[name="idkamar"]').on('change', function() {
var kamarID = $(this).val();
if(kamarID) {
$.ajax({
url: '/kamar/ajax/'+kamarID,
type: "GET",
dataType: "json",
success:function(data) {
$('select[name="idkelas"]').empty();
$.each(data, function(key, value) {
$('select[name="idkelas"]').append('<option value="'+ key +'">'+ value +'</option>');
});
}
});
}else{
$('select[name="idkelas"]').append('<option value="'+ key +'">'+ value +'</option>')
}
});
});
</script>
Controller
public function myformAjax($id)
{
$kelas = DB::table("kelas")
->where("idkamar",$id)
->pluck("name","id");
return json_encode($kelas);
}
public function edit($id)
{
$listkamar = ListKamar::find($id);
$kamar = DB::table("kamar")->pluck('name','id');
return view('listkamar.edit',compact('listkamar','kamar'));
}

Answer 1

You just need to pass $kelas in edit action. And in the view template, you will get all the values of that.