[英]Angular treetable (Primeng tree table) - get all the parent node of the chIldren
我正在使用primengtreetable 使用angular2 构建一棵树。 一旦我选择了一个节点,我想知道所选节点的“父节点”以及所选节点。
在这种情况下,如果我单击 4 ,我想知道有关单击节点 (4) 和父节点( Ranchi 和 Aamir) 的数据。
可以在初始文件中进行哪些更改以获得结果?
树表 HTML :
<h3 class="first">Basic</h3>
<p-treeTable [value]="data">
<ng-template pTemplate="body" let-rowNode let-rowData="rowData">
<tr>
<td>
<p-treeTableToggler [rowNode]="rowNode"></p-treeTableToggler>
<a routerLink="/overzicht-signal/details" *ngIf="!rowNode.node.children">{{ rowData[_object.keys(rowData)[0]] }}</a>
<span *ngIf="rowNode.node.children">{{ rowData[_object.keys(rowData)[0]]}}</span>
</td>
<td>{{rowData.aantalPersonen}}</td>
</tr>
</ng-template>
</p-treeTable>
打字稿文件:
export class CollapsibleBrinVestigingComponent implements OnInit{
signalFilter: any[]
data: any[] = [];
_object = Object;
constructor( private signalService: OverzichtSignalService) { }
ngOnInit(): void {
//this.signalService.getFilesystem().subscribe(x => {this.responseData = x});
this.signalFilter = this.signalService.getOverzichtSignalenOrderByBrinVestigingSignalcode();
this.signalFilter.forEach(element => {
let tmp: any = {
data: {},
children: []
};
Object.keys(element).forEach(prop => {
if (prop != 'signalenVestiging') {
tmp.data[prop] = element[prop];
} else {
element[prop].forEach(c1 => {
let tmp1: any = {
data: {},
children: []
};
Object.keys(c1).forEach(prop1 => {
if (prop1 != 'signalenCode') {
tmp1.data[prop1] = c1[prop1];
} else {
c1[prop1].forEach(c2 => {
tmp1.children.push({ data: c2 });
});
}
});
tmp.children.push(tmp1);
});
}
});
this.data.push(tmp);
});
}
}
服务类
@Injectable()
export class OverzichtSignalService {
const BRINSIGNAALFILTER = [
{
"brinname": "Aamir",
"aantalPersonen": "122",
"signalenVestiging": [
{
"vestiging": "Ranchi",
"aantalPersonen": "102",
"signalenCode": [
{
"signaalCode": "4",
"aantalPersonen": "15"
},
{
"signaalCode": "5",
"aantalPersonen": "15"
}
]
},
{
"vestiging": "Bangalore",
"aantalPersonen": "82",
"signalenCode": [
{
"signaalCode": "6",
"aantalPersonen": "15"
},
{
"signaalCode": "7",
"aantalPersonen": "15"
}
]
}
]
},
{
"brinname": "Abhinav",
"aantalPersonen": "122",
"signalenVestiging": [
{
"vestiging": "Bangalore",
"aantalPersonen": "102",
"signalenCode": [
{
"signaalCode": "7",
"aantalPersonen": "15"
}
]
}
]
}
]
constructor(private http: HttpClient) {
}
getOverzichtSignalenOrderByBrinVestigingSignalcode() {
return BRINSIGNAALFILTER;
}
}
它从服务类返回 Json 消息,该格式将其格式化为树形表结构 (primeng) Json 格式,并将其用于 HTML 文件以显示数据。
这是一位家长的例子。 (用于删除路由(例如节点))。
模板
<p-tree [value]="routes"
layout="horizontal"
selectionMode="single"
[(selection)]="selected">
</p-tree>
<a class="btn btn-primary"
(click)="removeRoute(selected)">Remove Page</a>
成分
removeRoute(node) {
const parent: any = this.findById(this.routes, node.parentId);
const index = parent.children.findIndex(c => c.id === node.id);
parent.children.splice(index, 1);
}
findById(data, id) {
for (const node of data) {
if (node.id === id) {
return node;
}
if (node.children) {
const desiredNode = this.findById(node.children, id);
if (desiredNode) {
return desiredNode;
}
}
}
return false;
}
我能够得到解决方案。
我使用了 Treenode 的 onNodeSelect api。 单击节点时,我只是检查节点是否有任何子节点。 如果他们没有,我将使用 event.node.data 获取最后一个子节点数据,然后调用函数并遍历回父节点并获取父节点的数据。
nodeSelect(event) {
if(!event.node.children) {
this.signalenCodeNode = event.node.data
this.getParentDetails(event.node)
}
}
getParentDetails(node: TreeNode) {
if(node.parent){
this.signalenVestigingNode= node.parent.data
if(node.parent.parent){
this.signalenBrin= node.parent.parent.data
}
}
}
HTML :
<h3 class="first">Basic</h3>
<p-treeTable [value]="data" selectionMode="single" [(selection)]="selectedNode" (onNodeSelect)="nodeSelect($event)">
<ng-template pTemplate="body" let-rowNode let-rowData="rowData">
<tr >
<td [ttSelectableRow]="rowNode" >
<p-treeTableToggler [rowNode]="rowNode"></p-treeTableToggler>
<span>{{ rowData[_object.keys(rowData)[0]] }} </span>
</td>
<td>{{rowData.aantalPersonen}}</td>
</tr>
</ng-template>
</p-treeTable>
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