Vue+SpringBoot+ElementUI实战学生管理系统-8.班级管理模块

1.章节介绍

前一篇介绍了专业管理模块，这一篇编写班级管理模块，需要的朋友可以拿去自己定制。：）

2.获取源码

源码是捐赠方式获取，详细请QQ联系我 ：）！

3.实现效果

班级列表

修改班级

4.模块代码

页面布局

<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item>首页</el-breadcrumb-item>
      <el-breadcrumb-item>班级管理</el-breadcrumb-item>
      <el-breadcrumb-item>班级列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索 添加 -->
      <el-row :gutter="20">
        <el-col :span="6">
          <el-input placeholder="请输入班级名称"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getGradeList">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getGradeList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary"
                     @click="addDialogVisible = true">添加班级</el-button>
        </el-col>
      </el-row>
      <!-- 班级列表区域 -->
      <el-table :data="gradeList"
                border
                stripe>
        <!-- stripe: 斑马条纹
        border：边框-->
        <el-table-column type="index"
                         label="序号"></el-table-column>
        <el-table-column prop="gradeNo"
                         label="班级编号"></el-table-column>
        <el-table-column prop="gradeName"
                         label="班级名称"></el-table-column>
        <el-table-column prop="deptName"
                         label="所属院系"></el-table-column>

        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"
                       circle
                       @click="showEditDialog(scope.row.id)"></el-button>
            <el-button type="danger"
                       icon="el-icon-delete"
                       size="mini"
                       circle
                       @click="removeById(scope.row.id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pageNo"
                     :page-size="queryInfo.pageSize"
                     layout="total, prev, pager, next, jumper"
                     :total="total"></el-pagination>
    </el-card>

    <!-- 添加班级的对话框 -->
    <el-dialog title="添加班级"
               :visible.sync="addDialogVisible"
               width="30%"
               @close="addDialogClosed">
      <!-- 内容主体 -->
      <el-form :model="addForm"
               ref="addFormRef"
               :rules="addFormRules"
               label-width="100px">
        <el-form-item label="班级编码"
                      prop="gradeNo">
          <el-input v-model="addForm.gradeNo"></el-input>
        </el-form-item>
        <el-form-item label="班级名称"
                      prop="gradeName">
          <el-input v-model="addForm.gradeName"></el-input>
        </el-form-item>

        <el-form-item label="所属院系"
                      prop="deptId">
          <el-select v-model="addForm.deptId"
                     placeholder="请选择">
            <el-option v-for="item in deptList"
                       :key="item.id"
                       :label="item.deptName"
                       :value="item.id">
            </el-option>
          </el-select>
        </el-form-item>

      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="add">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改班级的对话框 -->
    <el-dialog title="修改班级信息"
               :visible.sync="editDialogVisible"
               width="30%"
               @close="editDialogClosed">
      <!-- 内容主体 -->
      <el-form :model="editForm"
               ref="editFormRef"
               :rules="editFormRules"
               label-width="70px">
        <el-form-item label="班级编码">
          <el-input v-model="editForm.gradeNo"></el-input>
        </el-form-item>
        <el-form-item label="班级名称">
          <el-input v-model="editForm.gradeName"></el-input>
        </el-form-item>
        <!-- TODO  -->
        <el-form-item label="所属院系"
                      prop="deptId">
          <el-select v-model="editForm.deptId"
                     placeholder="请选择">
            <el-option v-for="item in deptList"
                       :key="item.id"
                       :label="item.deptName"
                       :value="item.id">
            </el-option>
          </el-select>
        </el-form-item>

      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUser">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

数据和事件

<script>
export default {
  data() {
    return {
      // 院系列表
      deptList: [],
      // 获取班级列表查询参数对象
      queryInfo: {
        query: "",
        // 当前页数
        pageNo: 1,
        // 每页显示多少数据
        pageSize: 5,
      },
      gradeList: [],
      total: 0,
      // 添加班级对话框
      addDialogVisible: false,
      // 班级添加
      addForm: {
        gradeNo: "",
        gradeName: "",
        deptId: "",
      },
      // 班级添加表单验证规则
      addFormRules: {
        gradeNo: [
          { required: true, message: "请输入班级编号", trigger: "blur" },
          {
            min: 2,
            max: 10,
            message: "班级编号的长度在2～10个字",
            trigger: "blur",
          },
        ],
        gradeName: [
          { required: true, message: "请输入班级名称", trigger: "blur" },
          {
            min: 2,
            max: 50,
            message: "班级名称的长度在2～50个字",
            trigger: "blur",
          },
        ],
        deptId: [
          { required: true, message: "请输入所属院系", trigger: "blur" },
        ],
      },
      // 修改班级
      editDialogVisible: false,
      editForm: {},
      // 编辑班级表单验证
      editFormRules: {
        gradeNo: [
          { required: true, message: "请输入班级编号", trigger: "blur" },
        ],
        gradeName: [
          { required: true, message: "请输入班级名称", trigger: "blur" },
        ],
      },
    };
  },
  created() {
    this.getGradeList();
    // 加载院系列表
    this.getDeptList();
  },
  methods: {
    async getGradeList() {
      const { data: res } = await this.$http.get("grade/list", {
        params: this.queryInfo,
      });
      if (res.code !== 200) {
        return this.$message.error("获取班级列表失败！");
      }
      this.gradeList = res.data.records;
      this.total = res.data.total;
    },
    async getDeptList() {
      const { data: res } = await this.$http.get("dept/listAll", {});
      if (res.code !== 200) {
        return this.$message.error("获取院系列表失败！");
      }
      this.deptList = res.data;
    },
    // 监听 pageSize改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pageSize = newSize;
      this.getGradeList();
    },
    // 监听 页码值 改变事件
    handleCurrentChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pageNo = newSize;
      this.getGradeList();
    },
    // 监听 添加班级对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 添加班级
    add() {
      // 提交请求前，表单预验证
      this.$refs.addFormRef.validate(async (valid) => {
        // console.log(valid)
        // 表单预校验失败
        if (!valid) return;
        const { data: res } = await this.$http.post(
          "grade/modify",
          this.addForm
        );
        if (res.code !== 200) {
          this.$message.error("添加班级失败！");
          return;
        }
        this.$message.success("添加班级成功！");
        // 隐藏添加班级对话框
        this.addDialogVisible = false;
        this.getGradeList();
      });
    },
    // 编辑班级信息
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("grade/" + id);
      if (res.code !== 200) {
        return this.$message.error("查询班级信息失败！");
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    // 监听修改班级对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    // 修改班级信息
    editUser() {
      // 提交请求前，表单预验证
      this.$refs.editFormRef.validate(async (valid) => {
        // console.log(valid)
        // 表单预校验失败
        if (!valid) return;
        const { data: res } = await this.$http.post("grade/modify", {
          id: this.editForm.id,
          gradeNo: this.editForm.gradeNo,
          gradeName: this.editForm.gradeName,
          deptId: this.editForm.deptId,
        });
        if (res.code !== 200) {
          this.$message.error("更新班级信息失败！");
        }
        // 隐藏添加班级对话框
        this.editDialogVisible = false;
        this.$message.success("更新班级信息成功！");
        this.getGradeList();
      });
    },
    // 删除班级
    async removeById(id) {
      const confirmResult = await this.$confirm("确定删除该班级?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).catch((err) => err);
      // 点击确定 返回值为：confirm
      // 点击取消 返回值为： cancel
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除");
      }
      const { data: res } = await this.$http.post("grade/remove/" + id);
      if (res.code !== 200) return this.$message.error("删除班级失败！");
      this.$message.success("删除班级成功！");
      this.getGradeList();
    },
  },
};
</script>