Laravel populate data on redirect route - php

Question

I'm doing a error exception where display a modal popup when fail to delete an entry due to parent constrain
Controller :
public function deleteUnitType(Request $request, $proj_id)
{
$id = $request->id;
$unit_types = UnitType::where('id', $id);
$floors = UnitTypeFloor::where('unit_type_id', $id)->get();
if(count($floors) != 0){
return redirect()->route('dev-admin.projects.unit-types.index', ['unit_types' => $unit_types, 'proj_id' => $proj_id, 'floors' => $floors])->with('failed', 'Unit Type failed to delete due to existing floor plan.');
} else {
// $unit_types->delete();
return redirect()->route('dev-admin.projects.unit-types.index', ['unit_types' => $unit_types, 'proj_id' => $proj_id])->with('status', 'Unit Type is successfully deleted.');
}
}
HTML :
<div class="col-12">
#if (session('status'))
<div class="alert alert-success alert-dismissible fade show" role="alert">
{{ session('status') }}
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
#elseif (session('failed'))
<div class="modal fade" id="unit-type-notification-modal" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<p>{{ session('failed') }}</p>
<ul>
#foreach($floors as $floor)
<li>{{ $floor -> name }}</li>
#endforeach
</ul>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
#endif
</div>
$( document ).ready(function() {
#if (session('failed'))
$('#unit-type-notification-modal').modal('show');
#endif
});
The modal popup and everything but for some reason it cannot find my $floor variable, it says :
Undefined variable: floors
but when I dd it on my controller, the data exist

Answer 1

I think you should check the first session has 'failed' following way.
#if(Session::has('status'))
#elseif( Session::has( 'failed' ) )
And your script:
$( document ).ready(function() {
#if(Session::has('failed'))
$('#unit-type-notification-modal').modal('show');
#endif
});
Thanks

Answer 2

You can add another with to your redirect route
return redirect()->route('dev-admin.projects.unit-types.index', ['unit_types' => $unit_types, 'proj_id' => $proj_id, 'floors' => $floors])
->with('failed', 'Unit Type failed to delete due to existing floor plan.')
->with('floors', $floors);
Or this;
return redirect()->route('dev-admin.projects.unit-types.index', ['unit_types' => $unit_types, 'proj_id' => $proj_id, 'floors' => $floors])
->with(['failed' => 'Unit Type failed to delete due to existing floor plan.', 'floors' => $floors]);