初始化项目：添加后端代码、ThinkPHP框架、前端资源
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<?php
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namespace app\api\model\app\exam;
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use think\Model;
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use app\api\model\app\exam\Exercises;
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use app\api\model\app\exam\WarehouseQuestion;
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use app\api\model\app\exam\ExercisesBindWarehouseGroup;
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/**
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* 题库练习记录答案
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*/
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class ExercisesLogAnswer extends Model
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{
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// 表名,不含前缀
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protected $name = 'app_exam_exercises_log_answer';
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// 自动写入时间戳字段
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protected $autoWriteTimestamp = false;
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// 定义时间戳字段名
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protected $createTime = false;
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protected $updateTime = false;
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// 追加属性
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protected $append = [
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];
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/**
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* 效验答案
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* @param $logId
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* @param $questionList 问题列表
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* @param $answerList 用户答案
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* @return void
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*/
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public function checkAnswer($questionList,$answerList){
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if(empty($answerList) || empty($questionList)){
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return [];
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}
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$questionKeyVals = [];
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foreach ($questionList as $question){
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$questionKeyVals[$question['id']] = $question;
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}
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$result = [];
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$questionKeys = array_keys($questionKeyVals);
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$trueCount = 0;
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$errorCount = 0;
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foreach ($answerList as $key => $answer){
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//判断答案的题目ID 是不是全在问题列表里
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if(!in_array($key,$questionKeys)){
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throw new \app\common\exception\Exception('答案数据异常');
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}
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$type = $questionKeyVals[$key]['type'];
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//判断答案的范围是否正确
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switch ($type){
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case 'judge':
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if($answer > 1 || $answer < 0){
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throw new \app\common\exception\Exception('判断题答案数据异常');
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}
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break;
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case 'single':
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if($answer > (count($questionKeyVals[$key]['option']) - 1) || $answer < 0){
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throw new \app\common\exception\Exception('单选题答案数据异常');
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}
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break;
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case 'multiple':
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case 'indefinite':
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if(!is_array($answer)){
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throw new \app\common\exception\Exception('多选题答案数据异常');
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}
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foreach ($answer as $option){
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if($option > (count($questionKeyVals[$key]['option']) - 1) || $option < 0){
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throw new \app\common\exception\Exception('多选题答案数据异常');
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}
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}
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break;
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case 'fillblank':
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if(!is_array($answer)){
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throw new \app\common\exception\Exception('填空题答案数据异常');
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}
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break;
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case 'essay':
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break;
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}
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$temp = [
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'question_id'=>$key,
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'createtime'=>time()
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];
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$isCorrect = false;
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switch ($type){
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case 'single':
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case 'judge':
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$temp['right_answer'] = $questionKeyVals[$key]['answer'];
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$temp['user_answer'] = $answer;
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$isCorrect = ($temp['right_answer'] == $temp['user_answer']);
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break;
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case 'multiple':
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case 'indefinite':
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$rightAnswer = $this->normalizeChoiceAnswer($questionKeyVals[$key]['answer']);
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$answer = $this->normalizeChoiceAnswer($answer);
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$temp['right_answer'] = implode(",",$rightAnswer);
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$temp['user_answer'] = implode(",",$answer);
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$isCorrect = ($rightAnswer == $answer);
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break;
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case 'fillblank':
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$rightAnswer = is_array($questionKeyVals[$key]['answer']) ? $questionKeyVals[$key]['answer'] : json_decode($questionKeyVals[$key]['answer'],true);
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$temp['right_answer'] = json_encode($rightAnswer,JSON_UNESCAPED_UNICODE);
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$temp['user_answer'] = json_encode($answer,JSON_UNESCAPED_UNICODE);
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$isCorrect = $this->checkFillblankAnswer($answer,$rightAnswer);
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break;
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case 'essay':
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$temp['right_answer'] = $questionKeyVals[$key]['answer'];
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$temp['user_answer'] = (is_array($answer) || is_object($answer))
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? json_encode($answer, JSON_UNESCAPED_UNICODE)
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: $answer;
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$isCorrect = false;
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break;
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}
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if($isCorrect){
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$trueCount++;
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$temp['result'] = 1;
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$temp['error_book_show'] = 0;
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}else{
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$temp['result'] = 0;
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// 问答题属于主观题，不纳入错题本
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$temp['error_book_show'] = ($type == 'essay') ? 2 : 1;
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if($type != 'essay'){
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$errorCount++;
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}
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}
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$result[] = $temp;
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}
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return [
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'answer_list'=>$result,
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'error_count'=>$errorCount,
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'true_count'=>$trueCount,
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];
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}
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/**
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* 校验填空题答案
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* @param array $userAnswer 用户答案
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* @param array $rightAnswer 正确答案
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* @return bool
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*/
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protected function checkFillblankAnswer($userAnswer,$rightAnswer){
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if(empty($rightAnswer) || empty($userAnswer)){
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return false;
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}
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if(count($userAnswer) != count($rightAnswer)){
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return false;
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}
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foreach ($rightAnswer as $index => $acceptedAnswers){
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$userBlankAnswer = isset($userAnswer[$index]) ? trim($userAnswer[$index]) : '';
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$blankCorrect = false;
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if(!is_array($acceptedAnswers)){
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$acceptedAnswers = [$acceptedAnswers];
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}
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foreach ($acceptedAnswers as $acceptedAnswer){
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if(strcasecmp(trim($acceptedAnswer),$userBlankAnswer) === 0){
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$blankCorrect = true;
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break;
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}
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}
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if(!$blankCorrect){
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return false;
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}
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}
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return true;
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}
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/**
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* 规范化选择题答案，避免多选/不定项因顺序不同误判。
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* @param mixed $answer
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* @return array
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*/
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protected function normalizeChoiceAnswer($answer)
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{
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if(!is_array($answer)){
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$answer = ($answer === '' || $answer === null) ? [] : explode(",",$answer);
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}
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$result = [];
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foreach ($answer as $item){
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if($item === '' || $item === null){
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continue;
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}
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$result[] = intval($item);
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}
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$result = array_values(array_unique($result));
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sort($result, SORT_NUMERIC);
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return $result;
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}
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/**
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* 博阿村答案
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* @param $userId
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* @param $logId
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* @param $answerList
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* @return void
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*/
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public function saveAnswer($userId,$exercisesId,$logId,$answerList){
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foreach ($answerList as &$item){
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$item['createtime'] = time();
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$item['exercises_log_id'] = $logId;
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$item['exercises_id'] = $exercisesId;
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$item['user_id'] = $userId;
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$item['uniacid'] = UNIACID;
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}
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return self::insertAll($answerList);
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}
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/**
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* 获取用户提交的答案
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* @param $userId
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* @param $exercisesId
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* @param $logId
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* @return array
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*/
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public function getUserAnswer($userId,$exercisesId,$logId = 0){
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$where = [
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'user_id'=>$userId
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];
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if($exercisesId){
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$where['exercises_id'] = $exercisesId;
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}
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if($logId){
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$where['exercises_log_id'] = $logId;
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}
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$list = self::with(['warehouse_question'])->where($where)->group('question_id')->order('id','desc')->select();
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$data = [];
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if(!$list){
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return $data;
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}
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$list = collection($list)->toArray();
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foreach ($list as $item){
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$type = isset($item['warehouse_question']['type']) ? $item['warehouse_question']['type'] : '';
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switch ($type){
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case 'multiple':
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case 'indefinite':
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$data[$item['question_id']] = [];
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foreach (explode(",",$item['user_answer']) as $option){
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$data[$item['question_id']][] = intval($option);
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}
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break;
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case 'fillblank':
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$data[$item['question_id']] = json_decode($item['user_answer'],true);
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break;
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case 'essay':
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$decoded = json_decode($item['user_answer'], true);
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$data[$item['question_id']] = is_array($decoded) ? $decoded : $item['user_answer'];
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break;
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default:
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$data[$item['question_id']] = intval($item['user_answer']);
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}
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}
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return $data;
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}
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public function warehouseQuestion()
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{
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return $this->belongsTo('app\api\model\app\exam\WarehouseQuestion', 'question_id', 'id', [], 'LEFT')->setEagerlyType(0);
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}
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}
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