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[英]Is it possible to add custom filterfunction with PrimeNG DataTable?
[英]How can i write a custom filterfunction for Date
我有一個帶有時間戳列的DataTable:
<p-dataTable sortMode="multiple" scrollable="scrollable" scrollHeight="150" [value]="currentChartData" #dt>
<p-column field="timestamp" header="Timestamp" [sortable]="true" [filter]="true">
<ng-template pTemplate="filter" let-col>
<div class="d-flex flex-row flex-wrap justify-content-center align-content-center">
<div style="padding-right: 29px">
<p-calendar [(ngModel)]="from" [showTime]="true"
(onSelect)="filter(dt, 'from')"
(onClearClick)="filter(dt, 'from')"
showButtonBar="true" readonlyInput="true"
[inputStyle]="{'width': '8em'}" styleClass="ui-column-filter" appendTo="body"
dateFormat="dd.mm.yy">
</p-calendar>
</div>
<div style="padding-right: 29px">
<p-calendar [(ngModel)]="to" [showTime]="true"
(onSelect)="filter(dt, 'to')"
(onClearClick)="filter(dt, 'to')"
showButtonBar="true" readonlyInput="true"
[inputStyle]="{'width': '8em'}" styleClass="ui-column-filter" appendTo="body"
dateFormat="dd.mm.yy">
</p-calendar>
</div>
</div>
</ng-template>
<ng-template let-row="rowData" pTemplate="body">
{{row.timestamp.toLocaleString()}}
</ng-template>
</p-column></p-dataTable>
我想使用兩個日歷作為“從”和“到”的過濾字段,以便過濾兩個日期之間的行。
我的過濾器功能如下所示:
between(value: any, from: any, to: any): boolean {
if (from === undefined || from === null) {
return true;
}
if (to === undefined || to === null) {
return false;
}
if ((from === undefined || from === null ||
(typeof from === 'string' && from.trim() === '') || from <= value) &&
(to === undefined || to === null ||
(typeof to === 'string' && to.trim() === '') || to >= value)) {
return true;
}
return false;
};
通常,您可以使用dt.filter()
在數據表上執行過濾器。 我如何覆蓋此函數以使用我的函數間進行過濾。 dt.filter()
的返回值是dt.filter()
?
我將新的filterConstraint注入到Datatable中,
@ViewChild('dt') dataTable: DataTable;
ngAfterViewChecked() {
if (this.dataTable !== undefined) {
const customFilterConstraints = this.dataTable.filterConstraints;
customFilterConstraints[ 'between' ] = this.between;
this.dataTable.filterConstraints = customFilterConstraints;
}
}
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