YT-2663:要货计划新增页面，背番的查询不好使

src/views/wms/purchasereceiptManage/supplierdeliver/purchasePlanMain/index.vue

@@ -84,7 +84,7 @@
           <el-input v-model="tableDataSearch.itemCode" placeholder="请输入品番" clearable @change="changeTableDataSearch"/>
         </el-form-item>
         <el-form-item label="背番">
-          <el-input v-model="tableDataSearch.backNumber" placeholder="请输入品番" clearable @change="changeTableDataSearch"/>
+          <el-input v-model="tableDataSearch.backNumber" placeholder="请输入背番" clearable @change="changeTableDataSearch"/>
         </el-form-item>
       </el-form>
      </div>
@@ -901,6 +901,7 @@ const handleSelectionPublish = async ()=>{
   }
   
   const changeTableDataSearch = ()=>{
+    debugger
     let filterList = tableData.value
     if(tableDataSearch.value['itemCode']){
       filterList = tableData.value.filter(item => {
@@ -909,7 +910,12 @@ const handleSelectionPublish = async ()=>{
     }
     if(tableDataSearch.value['backNumber']){
       filterList = filterList.filter(item => {
-        return item['backNumber'].includes(tableDataSearch.value['backNumber'])
+        //return item['backNumber'].includes(tableDataSearch.value['backNumber'])
+      // 如果 backNumber 为空（null/undefined/''），直接过滤掉
+    if (!item['backNumber']) return false;
+    
+    // 否则检查是否包含搜索值
+    return item['backNumber'].includes(tableDataSearch.value['backNumber']);
       })
     }
     showTableData.value = filterList