原代码

html部分：

     <el-form-itemv-for="(teaclass,index) in addFom.classIds":label="`班级${index+1}`"prop="classId"><el-row :gutter="12"><el-col :span="12"><el-select v-model="teaclass.classId" placeholder="请选择"><el-optionv-for="(item) in filterOptions[index]":label="item.className":value="item.classId":key="item.classId"/></el-select></el-col><el-col :span="5"><el-button type="danger" icon="el-icon-delete" circle @click="removeClassId(index)"/></el-col></el-row></el-form-item><el-form-item><el-button type="success" @click="submitTake('ruleForm')">提交</el-button><el-button @click="addClassId" :disabled="disabled">添加班级</el-button></el-form-item>

js部分：

 return {tableData: [],teaName: '',page: 1,total: 0,pageSize: 12,classData: [],show: false,dra: false,direction: 'rtl',addFom: {teaName: '',teaSex: true,teaType: true,teaPhone: '',seniority: 0,classIds: [{}]},classAll: [],disabled: false,rules: {teaName: [{ required: true, message: '请输入教师名称', trigger: 'blur' }],teaSex: [{ required: true, message: '请选择性别', trigger: 'blur' }],teaType: [{ required: true, message: '请选择类型', trigger: 'blur' }],teaPhone: [{ required: true, message: '请输入联系电话', trigger: 'blur' },{ min: 11, max: 11, message: '请输入长度11位的大陆号码', trigger: 'blur' }],seniority: [{ required: true, message: '请输入教龄', trigger: 'blur' }],classId: [{ required: true, message: '请选择班级', trigger: 'change' }]}}

结果：

可以看到，按照官网的写法动态渲染的表单项是无法进行校验验证的。这里就是无论选中没选中值都校验不通过。

解决

修改prop、rules

     <el-form-itemv-for="(teaclass,index) in addFom.classIds":label="`班级${index+1}`":prop="'classIds.'+ index + '.classId'":rules="rules.NotEmpty"><el-row :gutter="12"><el-col :span="12"><el-select v-model="teaclass.classId" placeholder="请选择"><el-optionv-for="(item) in filterOptions[index]":label="item.className":value="item.classId":key="item.classId"/></el-select></el-col><el-col :span="5"><el-button type="danger" icon="el-icon-delete" circle @click="removeClassId(index)"/></el-col></el-row></el-form-item>

    rules: {teaName: [{ required: true, message: '请输入教师名称', trigger: 'blur' }],teaSex: [{ required: true, message: '请选择性别', trigger: 'blur' }],teaType: [{ required: true, message: '请选择类型', trigger: 'blur' }],teaPhone: [{ required: true, message: '请输入联系电话', trigger: 'blur' },{ min: 11, max: 11, message: '请输入长度11位的大陆号码', trigger: 'blur' }],seniority: [{ required: true, message: '请输入教龄', trigger: 'blur' }],NotEmpty: [{ required: true, message: '请选择班级', trigger: 'change' }]}

结果：