Ant design Table组件子表格展开数据污染问题解决方案

重点在于属性expandedRowKeys，这个属性是控制展开项的数组，在展开获取数据请求时先进行清空这个属性，它是一个数组，然后push进入当前展开项，通过始终保持一个展开项不全部展开就能处理这个问题了

<a-table ref='saleTable' :expandedRowKeys="curExpands" rowKey="PurchaseId" :row-selection="{ selectedRowKeys: selectedRowKeys, onChange: onSelectChange }" @expand="expand" :columns="columns" expandRowByClick :data-source="purchaselistdata" :loading="loading" :scroll="{ x: 1600, y: tableHeight }" bordered :pagination="pagination"> {{text | Channel }} {{text | PurchaseStatus }}

            <div slot="action" slot-scope="text,tags,i">
                <a-button type="link" inline @click.stop="openDetailDialog(text,tags,i)">详情</a-button>
                <!-- <a-button type="link" inline @click="openDetailDialog(text,tags,i)">明细</a-button> -->
                <a-button type="link" inline @click.stop="openAfterSaleDialog(text,tags,i)">售后</a-button>
                <a-button type="link" inline @click.stop="openPutStorageDialog(text,tags,i)">入库</a-button>
            </div>
            <a-table slot="expandedRowRender" :rowKey="(record,index)=>{return index}" slot-scope="text"
                :columns="innerColumns" :data-source="innerData" :pagination="false">
                <a-tag slot="Status" slot-scope="text" :color="text | purchaseItemStatuscolor">
                    {{text | purchaseItemStatus }}
                </a-tag>
            </a-table>
        </a-table>

    在expand事件中进行操作

        expand(e, row) {
            this.curExpands = [];
            if (e) {
                    this.curExpands.push(row.PurchaseId)
                this.$api.procureItemById(row.PurchaseId).then(res => {
                    this.innerData = res.data;
                });

            }
        },