public function createListingDuration(Request $request)
    {
        $this->validate(
            $request,
            [
                'duration' => 'required|integer',
            ]
        );

        $listing_duration = new ListingDuration();

        $listing_duration->duration = $request->input('duration');

        $listing_duration->save();

        return redirect()->back()->withStatus(trans('mustard::admin.listing_duration_created'));
    }