Question

我有两个表，我想显示所有字段：pip。我不知道Laravel怎么做：

question_id.Question = question_id.QuestionOption

我的foreach循环但是不起作用：

Schema::create('questions', function (Blueprint $table) {
    $table->increments('id');
    $table->string('question_text');
    $table->integer('points');
    $table->integer('temps_reponse');

    $table->integer('categories_id')->unsigned();
    $table->foreign('categories_id')->references('id')->on('categories');

    $table->integer('type_id')->unsigned();
    $table->foreign('type_id')->references('id')->on('types');

    $table->timestamps();

});

Schema::create('question_options', function (Blueprint $table) {
    $table->increments('id');
    $table->string('option_one');
    $table->string('option_two');
    $table->string('option_three');
    $table->string('correcte');

    $table->integer('question_id')->unsigned()->nullable();
    $table->foreign('question_id')->references('id')->on('questions');

    $table->timestamps();

});

Answer 1

在模型中定义关系：

问题模型：

MGET

问题选择模型：

class Question extends Model {
    public $table = 'questions';

    public function options() {
        return $this->hasMany(QuestionOption::class);
    }
}

从现在起，您可以访问选项问题选项：

class QuestionOption extends Model { public $table = 'questions_options'; public function question() { return $this->belongsTo(Question::class); } }

并在您看来：

$question = Question::with('options')->first();

您可以直接从@foreach($question->options as $question_option) <tbody> <tr> <td>{{ $question_option->question->id }}</td> <td>{{ $question_option->question->question_text }}</td> <td>{{ $question_option->option_one }}</td> <td>{{ $question_option->option_two }}</td> <td>{{ $question_option->option_three }}</td> <td>{{ $question_option->question->points }}</td> </tr> </tbody> @endforeach对象访问$question_option->question->question_text，而不是question_text。

laravel 5.4中的关系显示数据

1 个答案: