elementui中的表单，根据条件判断切换是否必填

 <el-dialog title="新增放射源" custom-class="dialog" v-if="open" :visible.sync="open" width="50%" top="10vh"><el-form ref="form" class="formSelect" :rules="rules" :model="form" label-width="150px"><el-row class="dialog-form"><el-col :span="24"><el-form-item label="新增方式："><el-radio-group v-model="form.addWay" @input="radioFormChange"><el-radio-button label="1">从全息档案中选择</el-radio-button><el-radio-button label="2">手动输入</el-radio-button></el-radio-group></el-form-item><el-form-item label="统一社会信用代码：" prop="creditCode" :rules='form.addWay==1?[{required:false}]:rules.creditCode'><el-input placeholder="请输入统一社会信用代码" :disabled="form.addWay==1?true:false" v-model="form.creditCode"></el-input></el-form-item></el-col></el-row></el-form><div slot="footer" class="dialog-footer"><el-button @click="cancel('form')">取 消</el-button><el-button type="primary" @click="submitForm('form')">保 存</el-button></div></el-dialog>

open: false, //打开弹窗
form: {addWay: 1,
},rules: {creditCode: [{required: true,message: "请输入统一社会信用代码",trigger: "change",},],
},

 // 弹窗中的切换radioFormChange(val) {this.$refs.form.resetFields();},// 提交按钮submitForm(formName) {this.$refs[formName].validate((valid) => {if (valid) {console.log("submit!");} else {console.log("error submit!!", this.form);return false;}});},//  取消cancel(formName) {this.$refs[formName].resetFields();},