Undefined index: Laravel

Question

I had 2 tables . driver and part_time_available, when I select driver type parttime it'll show part_time_available field. the problem is I can't save.

it throws this error : Undefined index: start_time

here's my save controller code so far :

public function saveHandler(Request $request, $obj)
{
    try {
        DB::beginTransaction();
            $obj->fill($request->all());
            if (!$obj->save()) {
                throw new ValidationException($obj->errors());
            }
            foreach($request->parttimeAvailabilities as $pta) {
                \Log::info($pta);
                if (empty($pta['id'])) { 
                    $parttimeAvailability = new PartTimeAvailability();
                }
                else {
                    $parttimeAvailability = PartTimeAvailability::find($pta['id']);
                }
                $parttimeAvailability->driver()->associate($obj);
                $pta['driver_id'] = isset($pta['driver_id']);
                $parttimeAvailability->day = $pta['day'];
                $parttimeAvailability->start_time = $pta['start_time'];
                $parttimeAvailability->end_time = $pta['end_time'];
                $parttimeAvailability->available = isset($pta['available']);
                $parttimeAvailability->save();
            };
            $obj->save();
            if (!$parttimeAvailability->save()) {
                throw new ValidationException($parttimeAvailability->errors());
            }
        DB::commit();
        return $this->sendSuccessResponse($request);
    } catch (ValidationException $e) {
        DB::rollback();
        \Log::error($e->errors);
        return $this->sendErrorResponse($request, $e->errors);
    } catch (Exception $e) {
        DB::rollback();
        \Log::error($e->getMessage());
        return $this->sendErrorResponse($request,'Unable to process. Please contact system Administrator');
    }

}

here's my view form code :

<?php $index = 0; ?>
@foreach($dayOfWeek as $key => $day )
<div class="parttime">
    <div class="row">
        <div class="col-xs-2">
            <div class="form-group">
                {!! Form::text('parttimeAvailabilities['.$index.'][day]',$day, ['class' => 'form-control','disabled'])!!}
                {!! Form::hidden('parttimeAvailabilities['.$index.'][day]',$key, ['class' => 'form-control'])!!}
                {!! Form::hidden('parttimeAvailabilities['.$index.'][id]',null) !!}
            </div>
        </div>
        <div class="col-xs-2">
            <div class="form-group">
                {!! Form::text('parttimeAvailabilities['.$index.'][start_time]', null, ['class' => 'form-control start_time','placeholder' => 'Start time'])!!}
            </div>
        </div>
        <div class="col-xs-2">
            <div class="form-group">
                {!! Form::text('parttimeAvailabilities['.$index.'][end_time]', null, ['class' => 'form-control end_time','placeholder' => 'End time'])!!}
            </div>
        </div>
        <div class="col-xs-2">
            <div class="form-group">
        {!! Form::text('parttimeAvailabilities['.$index.'][hours]', null, ['id' => 'hours','class' => 'form-control', 'readonly'])!!}
            </div>
        </div>
        <div class="col-xs-2 text-center">
            <div class="form-group">
                {!! Form::checkbox('parttimeAvailabilities['.$index.'][available]')!!}
            </div>
        </div>
    </div>
</div>
<?php $index++; ?>
@endforeach

any idea ?

Answer 1

In my case, Laravel threw a Undefined index:'some_field' exception, because I accessed the field value(some_field) to evaluate it, but that field is not sent by the client app.

So in this case, we have to use function isset($response['some_field']) before accessing it. I hope this answer may help someone.

Answer 2

After our chat here is my propsal, It may work just from a slight change on your pta['start_time'] array value.

public function saveHandler(Request $request, $obj)
{
    try {
        DB::beginTransaction();
            $obj->fill($request->all());
            if (!$obj->save()) {
                throw new ValidationException($obj->errors());
            }
            foreach($request->parttimeAvailabilities as $pta) {
                \Log::info($pta);
                if (empty($pta['id'])) { 
                    $parttimeAvailability = new PartTimeAvailability();
                }
                else {
                    $parttimeAvailability = PartTimeAvailability::find($pta['id']);
                }
                $parttimeAvailability->driver()->associate($obj);
                $pta['driver_id'] = isset($pta['driver_id']);
                $parttimeAvailability->day = $pta['day'];
                $parttimeAvailability->start_time = isset($pta['start_time']) ? $pta['start_time'] : '00:00:00';
                $parttimeAvailability->end_time = $pta['end_time'];
                $parttimeAvailability->available = isset($pta['available']);
                $parttimeAvailability->save();
            };
            $obj->save();
            if (!$parttimeAvailability->save()) {
                throw new ValidationException($parttimeAvailability->errors());
            }
        DB::commit();
        return $this->sendSuccessResponse($request);
    } catch (ValidationException $e) {
        DB::rollback();
        \Log::error($e->errors);
        return $this->sendErrorResponse($request, $e->errors);
    } catch (Exception $e) {
        DB::rollback();
        \Log::error($e->getMessage());
        return $this->sendErrorResponse($request,'Unable to process. Please contact system Administrator');
    }

}

You said you believe the issue is from your $pta['start_time'] being empty / null on the post request well you can use the operator to check if isset and if the value isset then use it and if not use a blank value as your database allows for nullable entries on that specific value.

Give it a shot and let me know, Hopefully it fixes the issue if not ill see about helping the best i can, Im no expert though :)

I have updated this answer due to your validation rules?