public function postUpdateSalary()
 {
     $data = \Input::get('data');
     if ($data['range_salary_min'] >= $data['range_salary_max']) {
         return \Response::json(['type' => 'danger', 'message' => 'Minimum value must be smaller or not equal than maximum value']);
     }
     try {
         $contractor = \Contractor::getContractor();
         \Contractor::updateSalary($contractor, $data);
         return \Response::json(['type' => 'success', 'message' => 'Salary data has been updated']);
     } catch (\Exception $e) {
         return \Response::json(['type' => 'danger', 'message' => $e->getMessage()]);
     }
 }