接收不到id是为什么

Question

想做一个考试答题系统，但是提交的时候，接收不到题目id和卷子id，所以没办法存到数据库,哪位大神帮我看看怎么回事？ if ($hwpaper->save()){         $questions = HwQuestion::where('hw_knowledge_id', '=', $hwpaper->hw_knowledge_id)               ->where('diffculty', '=', $hwpaper->diffculty)               ->where('q_number', '>=', $hwpaper->start_number)               ->where('q_number', '<=', $hwpaper->end_number)               ->get();         $paper_id = $hwpaper->id;//       dd($questions);         return view('student.homework.practice', compact('questions', 'paper_id'));      } else {         return Redirect::back()->withInput()->withErros('失败');      }   }   public function postQuestion(Request $request)   {//    dd(Input::all());      $hwanswer = new HwStudentAnswer;      $hwanswer->hw_question_id = Input::get('question','1');      $hwanswer->hw_paper_id = Input::get('paper_id','167');      $hwanswer->selected_answer = Input::get('selected_answer');//    dd($hwanswer);      $hwanswer->save();      return $this->postRevise();   }view{{  }}{{ }}

Answer 1

laravel吧。你这代码太少了，没法看啊。最好把代码编辑一下，显示高亮，最好把必要的打印值显示出来