public function postAdd($name)
 {
     if ($this->category->add($name) !== 1) {
         Session::setError('something went wrong');
         Redirect::back();
     }
     Session::setMessage('done');
     Redirect::to('');
 }
 public function postAdd($name)
 {
     $validator = new Validation();
     $validator->setRule('required', $name, null, 'Name');
     if (!$validator->validate()) {
         Session::setError($validator->getErrors());
         Redirect::back();
     }
     if ($this->category->add($name) !== 1) {
         Session::setError('something went wrong');
         Redirect::back();
     }
     Session::setMessage('The category is added');
     Redirect::to('');
 }