Laravel 測驗存儲正確答案

Question

我對 Laravel很陌生，所以我有一個做測驗的項目。 目前，我實現了將帶有無線電答案的問題存儲在數據庫中，但我不知道如何：

1) 在 web 頁面上顯示所有帶有答案的問題。

2) 為用戶存儲每個正確答案的分數。

更新：感謝ettdro ，我已經解決了我的第一個問題。 只剩下我的第二個了。

我將不勝感激任何幫助。 我的Answer.php Model 現在是空的。 我的問題.php Model：

class Question extends Model
{
  // connect the models by adding a relationship to the Question model
  public function answers()
  {
      return $this->hasMany(Answer::class);
  }
}

我在Migration for Questions中的function 是：

public function up()
    {
        Schema::create('questions', function (Blueprint $table) {
            $table->id();
            $table->string('text');
            $table->integer('points')->unsigned();
            $table->timestamps();
        });
    }

我在Migration for Answers中的function 是：

public function up()
    {
        Schema::create('answers', function (Blueprint $table) {
            $table->id();
            // since answer is connected to the question
            $table->integer('question_id');
            $table->string('text');
            $table->boolean('correct_one');
            $table->timestamps();
        });
    }

我的問題AnswerSeeder.php是：

// for filling the tables
class QuestionAnswerSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */

    // truncating the tables and then store each question and its answers.
    public function run()
    {
      Question::truncate();
      Answer::truncate();
      $questionAndAnswers = $this->getData();

      $questionAndAnswers->each(function ($question) {
          $createdQuestion = Question::create([
              'text' => $question['question'],
              'points' => $question['points'],
          ]);

          collect($question['answers'])->each(function ($answer) use ($createdQuestion) {
              Answer::create([
                  'question_id' => $createdQuestion->id,
                  'text' => $answer['text'],
                  'correct_one' => $answer['correct_one'],
              ]);
          });
      });
    }

    // for the actual data, I use a separate getData method to keep it cleaner
    // in this method, I return a big collection with all the questions and answers
    private function getData()
    {
        return collect([
            [
                'question' => 'When did the World War 2 end?',
                'points' => '1',
                'answers' => [
                    ['text' => '1939', 'correct_one' => false],
                    ['text' => '1941', 'correct_one' => false],
                    ['text' => '1945', 'correct_one' => true],
                ],
            ],
            [
                'question' => 'Who discovered America?',
                'points' => '1',
                'answers' => [
                    ['text' => 'Adolf Hitler', 'correct_one' => false],
                    ['text' => 'Napoleon Bonaparte', 'correct_one' => false],
                    ['text' => 'Christopher Columbus', 'correct_one' => true],
                ],
            ],
        ]);
    }
}

Answer 1

您應該有一個QuestionController.php包含以下內容：

/**
  * In this function, you need to get all the data you want to pass to your view
  *  and send it to the compact function in the return statement.
  */
public function index() {
    // This will return a collection of questions including their answers.
    $questionsCollection = Question::all();
    return view('myquestionsview', compact('questionsCollection'));
}

接下來，由於您在索引 function 中返回了myquestionsview ，因此您將需要一個名為myquestionsview.blade.php的文件位於views文件夾中。

要顯示你的問題的信息，在你的myquestionsview.blade.php你應該有類似

@foreach ($questions as $question)
    {{ $question->text }}
    // Now, we want to display each answers of the question.
    @foreach ($question->answers as $answer)
        {{ $answer->text }}
    @endforeach
@endforeach

這基本上是你想要為你的第一個問題做的事情。