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Refresh DataTable and change to view new fetched data
Hi,
I have a question about Refresh/Reinitialize DataTable.
Im using Metronic v9.0.4 with Angular. The DataTable component is working fine and now I want to implement function to fetch new data and view new fetched data. How to refresh/reinitialize the DataTable when a button was clicked without reload the page?
Replies (1)
Hi
You need to:
- Destroy the existing DataTable instance.
- Fetch the new data from your API.
- Reinitialize the DataTable with the new dataset.
Here some example datatable code:
import { Component, OnInit, ViewChild } from "@angular/core";
import { HttpClient } from "@angular/common/http";
import { DataTableDirective } from "angular-datatables";
import { Subject } from "rxjs";
@Component({
selector: "app-my-table",
templateUrl: "./my-table.component.html",
styleUrls: ["./my-table.component.scss"]
})
export class MyTableComponent implements OnInit {
@ViewChild(DataTableDirective, { static: false }) dtElement!: DataTableDirective;
dtOptions: DataTables.Settings = {};
dtTrigger: Subject<any> = new Subject<any>();
tableData: any[] = [];
constructor(private http: HttpClient) {}
ngOnInit(): void {
this.dtOptions = {
pagingType: "full_numbers",
pageLength: 10,
processing: true
};
this.loadData();
}
loadData() {
this.http.get<any[]>("YOUR_API_ENDPOINT").subscribe(data => {
this.tableData = data;
this.dtTrigger.next(null); // Initialize DataTable
});
}
refreshTable() {
this.http.get<any[]>("YOUR_NEW_API_ENDPOINT").subscribe(data => {
this.tableData = data;
this.dtElement.dtInstance.then((dtInstance: DataTables.Api) => {
dtInstance.clear(); // Clear existing table data
dtInstance.rows.add(this.tableData); // Add new data
dtInstance.draw(); // Redraw the table
});
});
}
ngOnDestroy(): void {
this.dtTrigger.unsubscribe();
}
}How It Works
- loadData(): Fetches initial data and initializes DataTable.
- refreshTable(): Calls a new API to get fresh data.
- Uses dtInstance to clear and add the new data dynamically.
- Redraws the table.
