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| <template>
| <div class="app-container">
| <el-form
| ref="formRef"
| :model="formData"
| :rules="formRules"
| label-width="100px"
| v-loading="formLoading"
| >
| <el-form-item label="名字" prop="name">
| <el-input v-model="formData.name" placeholder="请输入名字" />
| </el-form-item>
| <el-form-item label="班主任" prop="teacher">
| <el-input v-model="formData.teacher" placeholder="请输入班主任" />
| </el-form-item>
| </el-form>
| </div>
| </template>
|
| <script>
| import * as Demo03StudentApi from '@/api/infra/demo03-inner';
| export default {
| name: "Demo03GradeForm",
| components: {
| },
| props:[
| 'studentId'
| ],// 学生编号(主表的关联字段)
| data() {
| return {
| // 表单的加载中:1)修改时的数据加载;2)提交的按钮禁用
| formLoading: false,
| // 表单参数
| formData: [],
| // 表单校验
| formRules: {
| studentId: [{ required: true, message: "学生编号不能为空", trigger: "blur" }],
| name: [{ required: true, message: "名字不能为空", trigger: "blur" }],
| teacher: [{ required: true, message: "班主任不能为空", trigger: "blur" }],
| },
| };
| },
| watch:{/** 监听主表的关联字段的变化,加载对应的子表数据 */
| studentId:{
| handler(val) {
| // 1. 重置表单
| this.formData = {
| id: undefined,
| studentId: undefined,
| name: undefined,
| teacher: undefined,
| }
| // 2. val 非空,则加载数据
| if (!val) {
| return;
| }
| try {
| this.formLoading = true;
| // 这里还是需要获取一下 this 的不然取不到 formData
| const that = this;
| Demo03StudentApi.getDemo03GradeByStudentId(val).then(function (res){
| const data = res.data;
| if (!data) {
| return
| }
| that.formData = data;
| })
| } finally {
| this.formLoading = false;
| }
| },
| immediate: true
| }
| },
| methods: {
| /** 表单校验 */
| validate(){
| return this.$refs["formRef"].validate();
| },
| /** 表单值 */
| getData(){
| return this.formData;
| }
| }
| };
| </script>
|
|