升级到 Angular Material - 版本 12(“@angular/material”:“^12.1.2”)之后。看来我无法再从 MatTreeFlatDataSource 访问 _flattenData 属性。这部分代码在升级前使用:
this.dataSource._flattenedData.value.forEach(item => {
const issueHasThisItem =
this.data.exitingItems.findIndex(
(loopItem: Entity) =>
(item.level === 1 ||
this.data.treeModalType === TreeModalType.SOLUTION) &&
loopItem.id === item.item.id
) !== -1;
if (issueHasThisItem) {
this.checklistSelection.select(item);
}
});
现在,_flattenData 似乎是只读私有的,它不再起作用(根据最新提交:Angular Material 链接):
Error: src/app/modules/issues/components/issue-impact/tree-modal/tree-modal.component.ts:151:21 - error TS2341: Property '_flattenedData' is private and only accessible within class 'MatTreeFlatDataSource<T, F, K>'.
151 this.dataSource._flattenedData.value.forEach((item) => {
~~~~~~~~~~~~~~
我知道这不是访问展平数据的正确方法。还有其他选择吗?
您可以通过
treeControl
访问节点:
this.treeControl.dataNodes.forEach(item => {