给全部业务单据都加上嵌套子表格的功能

jshERP-web/src/views/bill/PurchaseApplyList.vue

@@ -123,6 +123,8 @@
             :scroll="scroll"
             :loading="loading"
             :rowSelection="{selectedRowKeys: selectedRowKeys, onChange: onSelectChange}"
+            :expandedRowKeys="expandedRowKeys"
+            @expand="onExpand"
             @change="handleTableChange">
             <span slot="action" slot-scope="text, record">
               <a @click="myHandleDetail(record, '请购单', prefixNo)">查看</a>
@@ -142,6 +144,17 @@
               <a-tag v-if="status == '3'" color="blue">部分采购</a-tag>
               <a-tag v-if="status == '9'" color="orange">审核中</a-tag>
             </template>
+            <a-table
+              bordered
+              size="small"
+              slot="expandedRowRender"
+              slot-scope="record"
+              :loading="record.loading"
+              :columns="detailColumns"
+              :dataSource="record.childrens"
+              :row-key="record => record.id"
+              :pagination="false">
+            </a-table>
           </a-table>
         </div>
         <!-- table区域-end -->