elementui table子级tree懒加载bug

一行注释2024-12-12 2:04

删除子级刷新列表子级依然显示

2.更新状态子级列表未刷新

3.编辑子级后刷新页面显示状态未变更

el-table 树表格load源码

首先，load可以执行，但是只剩一个子节点就有问题，那么就直接可以定位bug在load方法里：

文件路径：element-plus\packages\components\table\src\store\tree.ts

const loadData = (row: T, key: string, treeNode) => {

const { load } = instance.props as unknown as TableProps<T>

if (load && !treeData.value $key$ .loaded) {

treeData.value $key$ .loading = true

load(row, treeNode, (data) => {

if (!Array.isArray(data)) {

throw new TypeError(' $ElTable$ data must be an array')

}

treeData.value $key$ .loading = false

treeData.value $key$ .loaded = true

treeData.value $key$ .expanded = true

// 就是这里，我们的子节点删完了data.length == 0，无法赋值

if (data.length) {

lazyTreeNodeMap.value $key$ = data

}

instance.emit('expand-change', row, true)

})

}

}

增加方法手动刷新子级数据

// 刷新时

const refreshChild = (parentId) => {

if (rowMaps.get(parentId)) {

const { tree, treeNode, resolve } = rowMaps.get(parentId);

handleLoadTableChild(tree, treeNode, resolve);

} else {

sysTemp.value.getTableData();

}

};

// 先new一个map用于数据保存

const rowMaps = reactive(new Map());

load加载时存储父级id及数据信息

rowMaps.set(tree.id, { tree, treeNode, resolve });