upload file

if ($request->file('avatar')) {

                    $image = $request->file('avatar');

                    $imageName = $image->getClientOriginalName();

                    $input['avatar'] = $imageName;

                    $destinationPath = 'avatar';

                    $request->file('avatar')->move($destinationPath, $imageName);
                } else {
                    $input['avatar'] = 'default.png';
                }