public function deleteCV($code)
 {
     $cv = Cv::where('cv_code', $code)->first();
     if ($cv->exists) {
         if ($cv->user_id != Auth::id()) {
             return Redirect::Back()->with('fail', 'You are not authorized to delete this CV');
         } else {
             $cv_id = $cv->id;
             Cv::find($cv_id)->delete();
             Education::where('cv_id', $cv_id)->delete();
             Language::where('cv_id', $cv_id)->delete();
             Nysc::where('cv_id', $cv_id)->delete();
             Section::where('cv_id', $cv_id)->delete();
             WorkExperience::where('cv_id', $cv_id)->delete();
             return Redirect::Back()->with('success', 'CV is successfully deleted');
         }
     } else {
         return Redirect::Back()->with('fail', 'You are not authorized to delete this CV');
     }
 }