ElementUI 中使用循环生成的form表单需要动态添加校验的规则
在data中定义好需要的rule,使用Element的语法给 :rules 动态绑定

:prop="getAllTableData.${i}.value"，getAllTableData是v-for绑定的数组，i是索引，value是表单绑定的v-model的名称

HTML代码片段

// An highlighted block
<!-- dialog -->
<el-dialog
    :title="dialogTitle"
    :visible.sync="dialogFormVisible"
    @close="dialogClose"
    :close-on-click-modal="false"
    width="40%"
    class="dialogForm-box"
>
    <el-form
        label-position="left"
        label-width="120px"
        ref="dialogRef"
        :model="getAllFormData"
    >
    	<!-- 循环开始  -->
        <template v-for="(item,i) in getAllFormData.getAllTableData">
        	<!-- 
        	判断循环中的元素是否需要下拉框  
        	:rules="item.rule"  循环中的数据 自定义的 rule 规则
        	:prop="`getAllTableData.${i}.value`"
        	每次循环的时候进行取值, 相当于给每个form绑定了唯一的model
        	-->
            <el-form-item
                v-if="item.selectFlag"
                :key="item.labelName"
                :label="item.labelName"
                :prop="`getAllTableData.${i}.value`"
                :rules="item.rule"
                class="selectInput-box"
            >
                <el-select v-model="item.value" placeholder="请选择">
                    <el-option
                        v-for="(item1) in item.selectOption"
                        :key="item1.value"
                        :label="item1.label"
                        :value="item1.value"
                    ></el-option>
                </el-select>
            </el-form-item>
            <el-form-item
                v-else-if="!item.hidden && item.disabled"
                :key="item.labelName"
                :prop="`getAllTableData.${i}.value`"
                :rules="item.rule"
                :label="item.labelName"
            >
                <el-input
                    v-model="item.value"
                    clearable
                    autocomplete="off"
                    :disabled="true"
                ></el-input>
            </el-form-item>
            <el-form-item
                v-else-if="!item.hidden"
                :key="i"
                :prop="`getAllTableData.${i}.value`"
                :rules="item.rule"
                :label="item.labelName"
            >
                <el-input v-model="item.value" clearable autocomplete="off"></el-input>
            </el-form-item>
        </template>
    </el-form>
    <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="FormSureBtn" :loading="SureBtnLoading">确 定</el-button>
    </div>
</el-dialog>

VUE中data中的声明

getAllFormData: {
		getAllTableData: [
		     {
		         labelName: "规则ID",
		         value: "",
		         propName: "ruleid",
		         disabled: true,
		         hidden: true,
		         // 规则必须也得定义在form绑定的model中
		         rule: {
		             required: false
		         }
		     },
		     {
		         labelName: "编码",
		         value: "",
		         propName: "code",
		         rule: {
		         	// ElementUI 表单校验规则的语法
		             validator: (rule, value, callback) => {
		                 if (value == "") {
		                     callback();
		                 } else {
		                 	// 采用正则表达式进行判断
		                     let reg = /[\u4E00-\u9FA5\uF900-\uFA2D]/;
		                     if (reg.test(value)) {
		                         callback(new Error("请输入英文或数字"));
		                     } else {
		                         callback();
		                     }
		                 }
		             },
		             trigger: "blur"
		         }
		     },
		     {
		         labelName: "名称",
		         value: "",
		         propName: "name",
		         rule: {}
		     },
		     {
		         labelName: "审核类别",
		         value: "",
		         propName: "typename",
		         rule: {}
		     },
		     {
		         labelName: "字段名称",
		         value: "",
		         propName: "fieldcode",
		         rule: {}
		     },
		     {
		         labelName: "备注",
		         value: "",
		         propName: "memo",
		         rule: {}
		     },
		
		     {
		         labelName: "评分",
		         value: "",
		         propName: "mark",
		         prop: "mark",
		         rule: {
		             required: true,
		             validator: (rule, value, callback) => {
		                 if (value == "") {
		                     callback(new Error("请输入数字"));
		                 } else {
		                     let reg = /^[0-9]+([.]{1}[0-9]{1})?$/;
		                     if (!reg.test(value) || value > 100) {
		                         callback(new Error("请输入0-100的有效数字,可保留一位小数"));
		                     } else {
		                         callback();
		                     }
		                 }
		             },
		             trigger: "blur"
		         }
		     },
		     {
		         labelName: "警告标识",
		         value: "",
		         propName: "warnsign",
		         prop: "warnsign",
		         selectFlag: true,
		         selectOption: [
		             {
		                 value: "0",
		                 label: "否"
		             },
		             {
		                 value: "1",
		                 label: "是"
		             }
		         ],
		         rule: {
		             required: true,
		             message: "请选择对应的选项"
		         }
		     }
		 	]
 },

效果图

required: true,说明该内容是必须填写的
正则表达式可以自定义项目需求的样式