element自定义表单验证上传身份证正反面的实现

<template>
    <div>
        <el-form :model="personalForm" :rules="rules" ref="personalForm" label-width="180px">
            <el-row>
                <el-col :span="24">
                    <el-form-item label="身份证证件照：" required style="" prop="merIdenImgFront">
                        <el-row type="flex" justify="space-between" class="uploadidcard">
                            <el-col :span="10">
                                <el-upload
                                    class="idCard1"
                                    :action="uploadURL"
                                    list-type="picture-card"
                                    :show-file-list="false"
                                    :on-success="handleAvatarSuccess1"
                                    accept=".JPG, .png, .jpeg"
                                    multiple="multiple"
                                    :on-change="idenImghandleChange"
                                    >
                                    <img v-if="merIdenImgFront" :src="merIdenImgFront" class="avatar" style="width:100%;height:100%">
                                </el-upload>
                            </el-col>
                            <el-col :span="10">
                                <el-upload
                                    
                                    class="idCard2"
                                    :action="uploadURL"
                                    list-type="picture-card"
                                    :show-file-list="false"
                                    :on-success="handleAvatarSuccess2"
                                    accept=".JPG, .png, .jpeg"
                                    multiple="multiple"
                                    :on-change="idenImghandleChange"
                                    >
                                    <img v-if="merIdenImgBack" :src="merIdenImgBack" class="avatar" style="width:100%;height:100%">
                                </el-upload>
                            </el-col>
                        </el-row>
                    </el-form-item>
                </el-col>
            </el-row>
            <el-form-item label=""> 
                <p style="color:#888">注：以上所需上传照片仅支持JPEG、GIF、PNG格式的图片，大小不超过2M。</p>
            </el-form-item>
            <el-form-item label="">
                <div class="btn-wrap">
                    <button type="button" @click="personalSubmit('personalForm')">提交</button>
                </div>
            </el-form-item>
        </el-form>
    </div>
</template>
<script>
export default {
    data() {
        // 身份证正面验证
        var validateImgFront=(rule, value, callback)=>{//（关键代码）
            if(this.personalForm.merIdenImgFront==''&&this.personalForm.merIdenImgBack==''){
                return callback(new Error('附件不能为空'))
            }else if(this.personalForm.merIdenImgFront==''){
                return callback(new Error('请上传身份证正面'))
            }else if(this.personalForm.merIdenImgBack==''){
                return callback(new Error('请上传身份证背面'))
            }else{
                callback()
            }
        };
        return {
            uploadURL:'',//自己的上传地址
            personalForm:{
                merIdenImgFront:'',//身份证正面
                merIdenImgBack:'',//身份证反面
            },
            merIdenImgFront:'',
            merIdenImgBack:'',
            rules:{
                // 身份证正反面
                merIdenImgFront: [
                    {validator: validateImgFront, trigger: 'change'}
                ]
            }
        }   
    },
    methods:{
        // 上传身份证正面成功
        handleAvatarSuccess1(response, file, fileList){
            this.merIdenImgFront=file.url;//保存临时图片
            this.personalForm.merIdenImgFront=response;//保存到提交表单
        },
        // 上传身份证反面成功
        handleAvatarSuccess2(response, file, fileList){
            this.merIdenImgBack=file.url;//保存临时图片
            this.personalForm.merIdenImgBack=response;//保存到提交表单
        },
        
        // 身份证表单验证
        idenImghandleChange(){
            this.$refs.personalForm.validateField('merIdenImgFront');//对部分表单字段进行校验的方法，也就是手动进行表单验证（关键代码）
        },
        //提交
        personalSubmit(formName){
            this.$refs[formName].validate(async(valid) => {
                if (valid) {
                    console.log('OJBK')
                } else {
                    return false;
                }
            });
        },
    }
}
</script>