相关代码如下 ，但是我不明白哪里来的model('reader') 我查看了数据库没有reader这张表 public function questions_list_action() { $output = array(); if ($answers = $this->model('reader')->fetch_answers_list($_GET['page'], 20)) { foreach ($answers AS $key => $val) { $question_ids[$val['question_id']] = $val['question_id']; $uids[$val['uid']] = $val['uid']; } $questions_info = $this->model('question')->get_question_info_by_ids($question_ids); $users_info = $this->model('account')->get_user_info_by_uids($uids, TRUE); foreach ($answers AS $key => $val) { $output['answers'][$val['answer_id']] = array( 'answer_id' => $val['answer_id'], 'question_id' => $val['question_id'], 'avatar' => get_avatar_url($val['uid'], 'mid'), 'user_name' => $users_info[$val['uid']]['user_name'], 'signature' => $users_info[$val['uid']]['signature'], 'agree_count' => $val['agree_count'], 'agree_users' => $this->model('answer')->get_vote_user_by_answer_id($val['answer_id']), 'answer_content' => FORMAT::parse_attachs(nl2br(FORMAT::parse_markdown($val['answer_content']))), 'add_time' => date_friendly($val['add_time']), 'uid' => $val['uid'], ); } foreach ($questions_info AS $key => $val) { $output['questions'][$val['question_id']] = array( 'question_id' => $val['question_id'], 'question_content' => $val['question_content'], 'question_detail' => FORMAT::parse_attachs(nl2br(FORMAT::parse_markdown($val['question_detail']))), 'answer_users' => $val['answer_users'], 'focus_count' => $val['focus_count'], 'view_count' => $val['view_count'] ); } } echo json_encode($output); } }