b1da021185
新增教师资料更新功能，包括个人信息修改和密码更新 添加操作日志记录系统，记录用户关键操作 实现系统设置模块，支持动态配置系统参数 重构数据库模型，新增教师表和系统设置表 优化成绩录入逻辑，支持平时分、期中和期末成绩计算 添加数据导出功能，支持学生、教师和成绩数据导出 完善管理员后台，增加统计图表和操作日志查看
94 lines
3.4 KiB
JavaScript
94 lines
3.4 KiB
JavaScript
const Course = require('../models/Course');
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const Score = require('../models/Score');
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const Student = require('../models/Student');
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class TeacherService {
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static async getCourses(teacherId) {
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return await Course.findByTeacherId(teacherId);
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}
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static async getClasses() {
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return await Course.getClasses();
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}
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static async getTeacherClasses(teacherId) {
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const sql = `SELECT * FROM classes WHERE teacher_id = ?`;
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const db = require('../config/database');
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return await db.query(sql, [teacherId]);
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}
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static async createCourse(teacherId, courseData) {
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return await Course.create({ ...courseData, teacher_id: teacherId });
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}
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static async updateCourse(teacherId, courseId, courseData) {
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// Verify ownership
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const course = await Course.findById(courseId);
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if (!course || course.teacher_id != teacherId) {
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throw new Error('无权修改该课程或课程不存在');
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}
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return await Course.update(courseId, courseData);
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}
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static async getGrades(teacherId, filters) {
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if (filters.courseId) {
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return await Score.findCourseStudentsWithGrades(filters.courseId, teacherId);
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} else {
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return await Score.findByTeacher(teacherId, filters);
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}
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}
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static async addScore(teacherId, scoreData) {
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let { studentId, courseId, score, usual_score, midterm_score, final_score } = scoreData;
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// 验证学生
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const student = await Student.findById(studentId);
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if (!student) {
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throw new Error('学生不存在');
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}
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// 如果没有总分但有平时/期中/期末分，尝试计算总分 (30% + 30% + 40%)
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if ((score === undefined || score === '') && (usual_score || midterm_score || final_score)) {
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const u = parseFloat(usual_score) || 0;
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const m = parseFloat(midterm_score) || 0;
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const f = parseFloat(final_score) || 0;
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score = (u * 0.3 + m * 0.3 + f * 0.4).toFixed(1);
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}
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// 计算绩点和等级
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const numericScore = parseFloat(score);
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let gradePoint = 0;
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let gradeLevel = 'F';
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if (!isNaN(numericScore)) {
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if (numericScore >= 90) { gradePoint = 4.0; gradeLevel = 'A'; }
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else if (numericScore >= 85) { gradePoint = 3.7; gradeLevel = 'A-'; }
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else if (numericScore >= 82) { gradePoint = 3.3; gradeLevel = 'B+'; }
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else if (numericScore >= 78) { gradePoint = 3.0; gradeLevel = 'B'; }
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else if (numericScore >= 75) { gradePoint = 2.7; gradeLevel = 'B-'; }
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else if (numericScore >= 72) { gradePoint = 2.3; gradeLevel = 'C+'; }
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else if (numericScore >= 68) { gradePoint = 2.0; gradeLevel = 'C'; }
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else if (numericScore >= 64) { gradePoint = 1.5; gradeLevel = 'C-'; }
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else if (numericScore >= 60) { gradePoint = 1.0; gradeLevel = 'D'; }
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} else {
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gradePoint = null;
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gradeLevel = null;
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}
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const fullScoreData = {
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...scoreData,
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score, // 更新后的总分
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teacherId,
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gradePoint,
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gradeLevel,
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usual_score,
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midterm_score,
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final_score
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};
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const gradeId = await Score.upsert(fullScoreData);
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return gradeId;
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}
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}
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module.exports = TeacherService; |