534 lines
13 KiB
Markdown
534 lines
13 KiB
Markdown
# 教师多班级功能技术方案
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> 作者：pangu
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> 创建时间：2026-02-03
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> 状态：待审核
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---
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## 一、需求描述
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### 1.1 业务场景
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- 张老师是武汉二中高二年级的数学老师
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- 他同时教 1班、2班、3班
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- 系统应支持在**一个教育身份**中选择**多个班级**
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### 1.2 预期效果
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**添加/编辑教育身份时**：
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```
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所在地区: 湖北省 / 武汉市 / 硚口区
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学校: 武汉市第二中学
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年级: 高二
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班级: [1班] [2班] [3班] ← 多选
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学科: 数学
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```
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**个人中心展示**：
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```
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┌────────────────────────────────┐
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│ 📘 数学 当前使用 │
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│ 武汉市第二中学 │
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│ 班级: 高二1班、高二2班、高二3班 │
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│ 学科: 数学 │
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│ 编辑 解除 切换 │
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└────────────────────────────────┘
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```
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---
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## 二、当前架构分析
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### 2.1 现有数据结构
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| 表名 | 字段 | 类型 | 说明 |
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|------|------|------|------|
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| `pg_member` | `school_class_id` | `bigint` | 单值，只能存一个班级 |
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### 2.2 现有接口
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| 接口 | 方法 | 说明 |
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|------|------|------|
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| `/h5/member/education` | GET | 返回单个教育身份 |
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| `/h5/member/education` | POST | 保存单个教育身份（覆盖） |
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| `/h5/member/education` | DELETE | 删除教育身份 |
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### 2.3 问题
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- 班级字段是单值，不支持多班级
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- 接口设计为覆盖式更新
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---
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## 三、技术方案
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### 3.1 数据库改造
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#### 3.1.1 新建关联表
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```sql
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-- 会员-班级关联表（多对多）
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CREATE TABLE pg_member_class (
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id BIGINT PRIMARY KEY AUTO_INCREMENT,
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member_id BIGINT NOT NULL COMMENT '会员ID',
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school_class_id BIGINT NOT NULL COMMENT '学校班级关联ID',
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create_time DATETIME DEFAULT CURRENT_TIMESTAMP,
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UNIQUE KEY uk_member_class (member_id, school_class_id),
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KEY idx_member_id (member_id)
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) COMMENT '会员班级关联表';
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```
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#### 3.1.2 数据迁移脚本
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```sql
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-- 将现有数据迁移到关联表
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INSERT INTO pg_member_class (member_id, school_class_id)
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SELECT member_id, school_class_id
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FROM pg_member
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WHERE school_class_id IS NOT NULL AND identity_type = '2';
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```
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#### 3.1.3 pg_member 表调整
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| 字段 | 处理方式 |
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|------|----------|
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| `school_class_id` | 保留（向后兼容）或后续版本删除 |
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---
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### 3.2 后端改造
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#### 3.2.1 新建实体类
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**文件**：`pangu-modules/pangu-business/src/main/java/org/dromara/pangu/member/domain/PgMemberClass.java`
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```java
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package org.dromara.pangu.member.domain;
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import com.baomidou.mybatisplus.annotation.IdType;
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import com.baomidou.mybatisplus.annotation.TableId;
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import com.baomidou.mybatisplus.annotation.TableName;
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import lombok.Data;
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import java.util.Date;
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@Data
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@TableName("pg_member_class")
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public class PgMemberClass {
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@TableId(type = IdType.AUTO)
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private Long id;
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private Long memberId;
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private Long schoolClassId;
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private Date createTime;
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}
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```
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#### 3.2.2 新建 Mapper
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**文件**：`pangu-modules/pangu-business/src/main/java/org/dromara/pangu/member/mapper/PgMemberClassMapper.java`
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```java
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package org.dromara.pangu.member.mapper;
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import com.baomidou.mybatisplus.core.mapper.BaseMapper;
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import org.apache.ibatis.annotations.Mapper;
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import org.dromara.pangu.member.domain.PgMemberClass;
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@Mapper
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public interface PgMemberClassMapper extends BaseMapper<PgMemberClass> {
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}
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```
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#### 3.2.3 修改 DTO
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**文件**：`H5EducationDto.java`
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```java
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// 修改前
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@Schema(description = "学校班级关联ID")
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@NotNull(message = "请选择班级")
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private Long schoolClassId;
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// 修改后
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@Schema(description = "学校班级关联ID列表")
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@NotEmpty(message = "请选择班级")
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private List<Long> schoolClassIds;
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```
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#### 3.2.4 修改 VO
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**文件**：`H5EducationVo.java`
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```java
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// 新增字段
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private List<Long> schoolClassIds; // 班级ID列表
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private List<String> classNames; // 班级名称列表（用于前端展示）
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```
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#### 3.2.5 修改 Service
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**文件**：`H5MemberServiceImpl.java`
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```java
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@Autowired
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private PgMemberClassMapper memberClassMapper;
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@Override
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@Transactional(rollbackFor = Exception.class)
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public void saveEducation(H5EducationDto dto) {
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Long memberId = getCurrentMemberId();
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PgMember member = memberMapper.selectById(memberId);
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if (member == null) {
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throw new ServiceException("会员不存在");
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}
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// 1. 校验学校、年级存在
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// ... 原有校验逻辑 ...
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// 2. 校验所有班级是否存在且属于该年级
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for (Long classId : dto.getSchoolClassIds()) {
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PgSchoolClass schoolClass = schoolClassMapper.selectById(classId);
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if (schoolClass == null || !schoolClass.getSchoolGradeId().equals(dto.getSchoolGradeId())) {
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throw new ServiceException("班级不存在或不属于该年级");
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}
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}
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// 3. 更新会员基本信息
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member.setSchoolId(dto.getSchoolId());
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member.setSchoolGradeId(dto.getSchoolGradeId());
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member.setSubjectId(dto.getSubjectId());
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member.setIdentityType("2");
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member.setRegionId(school.getRegionId());
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memberMapper.updateById(member);
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// 4. 删除旧的班级关联
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memberClassMapper.delete(
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new LambdaQueryWrapper<PgMemberClass>()
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.eq(PgMemberClass::getMemberId, memberId)
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);
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// 5. 插入新的班级关联
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for (Long classId : dto.getSchoolClassIds()) {
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PgMemberClass mc = new PgMemberClass();
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mc.setMemberId(memberId);
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mc.setSchoolClassId(classId);
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memberClassMapper.insert(mc);
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}
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}
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@Override
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public H5EducationVo getEducation() {
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Long memberId = getCurrentMemberId();
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PgMember member = memberMapper.selectById(memberId);
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if (member == null) {
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throw new ServiceException("会员不存在");
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}
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if (!"2".equals(member.getIdentityType()) || member.getSchoolId() == null) {
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return null;
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}
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H5EducationVo vo = buildEducationVo(member);
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// 查询关联的班级列表
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List<PgMemberClass> memberClasses = memberClassMapper.selectList(
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new LambdaQueryWrapper<PgMemberClass>()
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.eq(PgMemberClass::getMemberId, memberId)
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);
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List<Long> classIds = memberClasses.stream()
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.map(PgMemberClass::getSchoolClassId)
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.collect(Collectors.toList());
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vo.setSchoolClassIds(classIds);
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// 填充班级名称
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if (!classIds.isEmpty()) {
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List<String> classNames = new ArrayList<>();
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for (Long classId : classIds) {
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PgSchoolClass schoolClass = schoolClassMapper.selectById(classId);
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if (schoolClass != null) {
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PgClass pgClass = classMapper.selectById(schoolClass.getClassId());
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if (pgClass != null) {
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classNames.add(pgClass.getClassName());
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}
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}
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}
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vo.setClassNames(classNames);
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}
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return vo;
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}
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@Override
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@Transactional(rollbackFor = Exception.class)
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public void deleteEducation() {
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Long memberId = getCurrentMemberId();
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// 删除班级关联
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memberClassMapper.delete(
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new LambdaQueryWrapper<PgMemberClass>()
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.eq(PgMemberClass::getMemberId, memberId)
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);
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// 清空会员教育信息
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// ... 原有逻辑 ...
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}
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```
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---
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### 3.3 H5 前端改造
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#### 3.3.1 修改表单组件
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**文件**：`user_authentication_center_front/user-front/src/components/TeacherIdentityForm.vue`
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**表单数据修改**：
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```javascript
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// 修改前
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const teacherForm = reactive({
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classId: '',
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})
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// 修改后
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const teacherForm = reactive({
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classIds: [],
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})
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```
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**模板修改**：
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```vue
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<!-- 修改前 -->
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<el-form-item label="班级" prop="classId">
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<el-select v-model="teacherForm.classId">
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<!-- ... -->
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</el-select>
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</el-form-item>
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<!-- 修改后 -->
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<el-form-item label="班级" prop="classIds">
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<el-select
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v-model="teacherForm.classIds"
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multiple
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collapse-tags
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collapse-tags-tooltip
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:max-collapse-tags="3"
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placeholder="请选择班级（可多选）"
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size="large"
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>
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<el-option
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v-for="classItem in classOptions"
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:key="classItem.schoolClassId"
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:label="classItem.className"
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:value="classItem.schoolClassId"
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/>
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</el-select>
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</el-form-item>
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```
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**验证规则修改**：
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```javascript
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// 修改前
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classId: [{ required: true, message: '请选择班级', trigger: 'change' }],
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// 修改后
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classIds: [{
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required: true,
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type: 'array',
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min: 1,
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message: '请至少选择一个班级',
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trigger: 'change'
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}],
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```
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**提交逻辑修改**：
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```javascript
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const requestData = {
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schoolId: teacherForm.schoolId,
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schoolGradeId: teacherForm.gradeId,
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schoolClassIds: teacherForm.classIds, // 数组
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subjectId: teacherForm.subjectId,
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}
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```
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**回显逻辑修改**：
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```javascript
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// setFormData 中
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teacherForm.classIds = formData.schoolClassIds || []
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```
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#### 3.3.2 修改列表展示
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**文件**：`user_authentication_center_front/user-front/src/views/userCenter/index.vue`
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```javascript
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// getEducationIdentities 方法中
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educationIdentities.value = [{
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id: 1,
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role: `${item.subjectName || '教师'}`,
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school: item.schoolName || '',
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icon: 'mdi:account-tie',
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active: true,
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details: [
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{ label: '班级', value: item.classNames?.join('、') || '' }, // 多班级用顿号连接
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{ label: '学科', value: item.subjectName || '' },
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],
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}]
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```
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---
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## 四、文件改动清单
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| 层级 | 文件路径 | 改动类型 |
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|------|----------|----------|
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| **数据库** | DDL 脚本 | 新建 |
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| **后端** | `pangu-business/.../member/domain/PgMemberClass.java` | 新建 |
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| **后端** | `pangu-business/.../member/mapper/PgMemberClassMapper.java` | 新建 |
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| **后端** | `pangu-business/.../h5/domain/dto/H5EducationDto.java` | 修改 |
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| **后端** | `pangu-business/.../h5/domain/vo/H5EducationVo.java` | 修改 |
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| **后端** | `pangu-business/.../h5/service/impl/H5MemberServiceImpl.java` | 修改 |
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| **H5前端** | `user-front/src/components/TeacherIdentityForm.vue` | 修改 |
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| **H5前端** | `user-front/src/views/userCenter/index.vue` | 修改 |
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---
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## 五、接口变更
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### 5.1 POST /h5/member/education
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**请求参数变更**：
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```json
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// 修改前
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{
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"schoolId": 1,
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"schoolGradeId": 5,
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"schoolClassId": 104,
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"subjectId": 1
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}
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// 修改后
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{
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"schoolId": 1,
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"schoolGradeId": 5,
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"schoolClassIds": [104, 105, 106],
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"subjectId": 1
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}
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```
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### 5.2 GET /h5/member/education
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**响应参数变更**：
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```json
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// 修改前
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{
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"code": 200,
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"data": {
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"schoolId": 1,
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"schoolName": "武汉市第二中学",
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"schoolGradeId": 5,
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"gradeName": "高二",
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"schoolClassId": 104,
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"className": "1班",
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"subjectId": 1,
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"subjectName": "数学"
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}
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}
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// 修改后
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{
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"code": 200,
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"data": {
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"schoolId": 1,
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"schoolName": "武汉市第二中学",
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"schoolGradeId": 5,
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"gradeName": "高二",
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"schoolClassIds": [104, 105, 106],
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"classNames": ["1班", "2班", "3班"],
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"subjectId": 1,
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"subjectName": "数学"
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}
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}
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```
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---
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## 六、测试要点
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| 场景 | 测试内容 | 预期结果 |
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|------|----------|----------|
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| 新增 | 选择多个班级保存 | 保存成功，关联表有多条记录 |
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| 编辑 | 回显多个班级 | 多选框显示已选班级 |
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| 编辑 | 增加/减少班级 | 关联表正确更新 |
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| 删除 | 删除教育身份 | 关联表数据同步删除 |
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| 展示 | 列表显示多班级 | 显示"1班、2班、3班" |
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| 边界 | 不选班级提交 | 校验失败，提示选择班级 |
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| 边界 | 选择不同年级的班级 | 校验失败，提示班级不属于该年级 |
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---
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## 七、上线计划
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| 步骤 | 内容 | 负责人 | 备注 |
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|------|------|--------|------|
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| 1 | 执行数据库 DDL | DBA | 建表 |
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| 2 | 执行数据迁移脚本 | DBA | 迁移现有数据 |
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| 3 | 部署后端服务 | 运维 | - |
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| 4 | 部署 H5 前端 | 运维 | 需同步上线 |
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| 5 | 验证测试 | 测试 | 回归测试 |
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---
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## 八、回滚方案
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1. 后端代码回滚到上一版本
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2. 前端代码回滚到上一版本
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3. 数据库：
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- 从 `pg_member_class` 恢复 `pg_member.school_class_id`（取第一条）
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- 删除 `pg_member_class` 表
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---
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## 九、风险评估
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| 风险 | 等级 | 应对措施 |
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|------|------|----------|
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| 数据迁移失败 | 中 | 先在测试环境验证，生产环境备份 |
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| 前后端不同步 | 高 | 同步上线，灰度发布 |
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| 性能问题 | 低 | 关联表已加索引 |
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| 兼容性问题 | 中 | 管理后台如有相关页面需同步修改 |
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---
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## 附录：相关表结构
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### pg_member（会员表，现有）
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| 字段 | 类型 | 说明 |
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|------|------|------|
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| member_id | bigint | 主键 |
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| consumer_id | bigint | 用户ID |
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| school_id | bigint | 学校ID |
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| school_grade_id | bigint | 年级ID |
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| school_class_id | bigint | 班级ID（单值，改造后可废弃） |
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| subject_id | bigint | 学科ID |
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| identity_type | varchar | 身份类型：1-家长，2-教师 |
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### pg_member_class（会员班级关联表，新建）
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| 字段 | 类型 | 说明 |
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|------|------|------|
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| id | bigint | 主键 |
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| member_id | bigint | 会员ID |
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| school_class_id | bigint | 学校班级关联ID |
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| create_time | datetime | 创建时间 |
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