<?php
/**
 * 答题试卷记录-模型
 * @author laravel开发员
 * @since 2020/11/11
 * @package App\Models
 */
namespace App\Models;
class ExamAnswerModel extends BaseModel
{
    protected $table = 'exam_answers';

    /**
     * 错题
     * @return \Illuminate\Database\Eloquent\Relations\HasOne
     */
    public function error()
    {
        return $this->hasOne(ExamAnswerTopicModel::class, 'answer_log_id', 'id')
            ->where(['accurate'=>0,'status' => 1, 'mark' => 1])
            ->orderBy('create_time','asc');
    }

}