angular2 template - Refresh ngx-datatable list

Angular2 template - Refresh ngx-datatable list

To refresh the data displayed in an ngx-datatable in Angular 2+ (or Angular), you typically need to update the underlying data source bound to the table. Here's how you can refresh or update the data in ngx-datatable:

Method 1: Updating the Data Source Directly

Assuming you have an array (data) bound to ngx-datatable:

  1. Update the Data Source: Modify the data array directly with new data or updated values.

    import { Component } from '@angular/core'; @Component({ selector: 'app-my-component', templateUrl: './my-component.component.html', styleUrls: ['./my-component.component.css'] }) export class MyComponent { data = [ { id: 1, name: 'John Doe' }, { id: 2, name: 'Jane Smith' }, // more data... ]; refreshData() { // Example: Fetch new data from API or update existing data this.data = [ { id: 1, name: 'Updated John Doe' }, { id: 2, name: 'Updated Jane Smith' }, // more updated data... ]; } }

  2. Trigger Data Refresh in Template: Bind a button or action in your template to call the refreshData() method to update the data array.

    <button (click)="refreshData()">Refresh Data</button> <ngx-datatable [rows]="data"> <!-- Define ngx-datatable columns and settings --> </ngx-datatable>

Method 2: Using ngx-datatable API (if applicable)

If you are using specific features of ngx-datatable like sorting, filtering, or pagination, ensure to update or reset these features accordingly after updating the data source.

Notes:

  • Immutable Update: For performance and best practices, consider using immutable data operations, especially with large datasets. Libraries like Immutable.js or Angular's NgRx for state management can help manage state updates efficiently.

  • State Management: If your application uses state management solutions like NgRx (Redux for Angular), update the state and ensure the component reflects the updated state correctly.

  • Data Binding: Ensure that changes to the data array are reflected in the template where ngx-datatable is bound ([rows]="data").

By following these steps, you can effectively refresh the data displayed in ngx-datatable within your Angular application. Adjust the refreshData() method and data handling based on your specific data source and application requirements.

Examples

  1. How to refresh ngx-datatable list in Angular 2+? Description: Refreshing the ngx-datatable list involves updating its data source and optionally triggering a refresh of the table.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> <button (click)="refreshTable()">Refresh Table</button> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns } refreshTable() { // Update rows data (example: fetch new data from API) this.rows = this.fetchDataFromApi(); // Trigger refresh of the table this.table.recalculate(); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // New data array ]; } }

  2. How to force reload ngx-datatable in Angular 2? Description: This approach forces the ngx-datatable to reload by reassigning the data source or resetting the state.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> <button (click)="forceReload()">Force Reload</button> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns } forceReload() { // Update rows data (example: reset state or fetch new data) this.rows = this.fetchDataFromApi(); // Reassign data to force reload this.table.rows = [...this.rows]; this.table.recalculate(); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // New data array ]; } }

  3. How to refresh ngx-datatable without resetting scroll position in Angular? Description: This snippet ensures that the ngx-datatable refreshes without affecting the current scroll position.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> <button (click)="refreshTable()">Refresh Table</button> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns } refreshTable() { // Update rows data (example: fetch new data from API) this.rows = this.fetchDataFromApi(); // Preserve scroll position while refreshing const scrollY = this.table.element.getBoundingClientRect().top; this.table.rows = [...this.rows]; this.table.recalculate(); this.table.element.scrollTo(0, scrollY); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // New data array ]; } }

  4. How to update ngx-datatable data on button click in Angular? Description: This example updates the ngx-datatable's data source when a button is clicked.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> <button (click)="updateTable()">Update Table</button> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns } updateTable() { // Update rows data (example: fetch updated data from API) this.rows = this.fetchUpdatedDataFromApi(); // Assign updated data to the table this.table.rows = [...this.rows]; this.table.recalculate(); } private fetchUpdatedDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Updated data array ]; } }

  5. How to refresh ngx-datatable after data changes in Angular? Description: This code demonstrates refreshing the ngx-datatable after detecting changes in data.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns this.loadData(); } loadData() { // Simulated API call or actual data retrieval logic this.rows = this.fetchDataFromApi(); this.columns = this.fetchColumnsFromApi(); } onChangesDetected() { // Handle changes detection, then refresh the table this.table.rows = [...this.rows]; this.table.recalculate(); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Data array ]; } private fetchColumnsFromApi() { // Simulated API call or actual data retrieval logic return [ // Columns array ]; } }

  6. How to reload data in ngx-datatable on event trigger in Angular? Description: This example demonstrates reloading data in ngx-datatable when an event is triggered.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> <button (click)="reloadData()">Reload Data</button> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns } reloadData() { // Reload rows data (example: fetch updated data from API) this.rows = this.fetchDataFromApi(); // Assign updated data to the table this.table.rows = [...this.rows]; this.table.recalculate(); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Updated data array ]; } }

  7. How to handle ngx-datatable refresh on data change in Angular? Description: This code snippet handles refreshing ngx-datatable when data changes.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns this.loadData(); } loadData() { // Simulated API call or actual data retrieval logic this.rows = this.fetchDataFromApi(); this.columns = this.fetchColumnsFromApi(); } onDataChanged() { // Handle data change detection and refresh the table this.table.rows = [...this.rows]; this.table.recalculate(); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Data array ]; } private fetchColumnsFromApi() { // Simulated API call or actual data retrieval logic return [ // Columns array ]; } }

  8. How to refresh ngx-datatable using ngOnChanges in Angular? Description: This example uses ngOnChanges to refresh ngx-datatable when changes are detected.

    import { Component, ViewChild, OnChanges, SimpleChanges } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> ` }) export class TableComponent implements OnChanges { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns this.loadData(); } ngOnChanges(changes: SimpleChanges) { if (changes.rows) { this.table.rows = [...this.rows]; this.table.recalculate(); } } loadData() { // Simulated API call or actual data retrieval logic this.rows = this.fetchDataFromApi(); this.columns = this.fetchColumnsFromApi(); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Data array ]; } private fetchColumnsFromApi() { // Simulated API call or actual data retrieval logic return [ // Columns array ]; } }

  9. How to update ngx-datatable dynamically in Angular 2+? Description: This snippet dynamically updates ngx-datatable's data source and triggers a refresh.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> <button (click)="updateTable()">Update Table</button> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns this.loadData(); } updateTable() { // Update rows data (example: fetch updated data from API) this.rows = this.fetchUpdatedDataFromApi(); // Assign updated data to the table this.table.rows = [...this.rows]; this.table.recalculate(); } private loadData() { // Simulated initial data load this.rows = this.fetchDataFromApi(); this.columns = this.fetchColumnsFromApi(); } private fetchUpdatedDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Updated data array ]; } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Data array ]; } private fetchColumnsFromApi() { // Simulated API call or actual data retrieval logic return [ // Columns array ]; } }

  10. How to refresh ngx-datatable on data change event in Angular application? Description: This example shows how to refresh ngx-datatable when a data change event occurs.

    import { Component, ViewChild } from '@angular/core'; import { DatatableComponent } from '@swimlane/ngx-datatable'; @Component({ selector: 'app-table', template: ` <ngx-datatable #table class="material striped" [rows]="rows" [columns]="columns"> </ngx-datatable> ` }) export class TableComponent { @ViewChild('table') table: DatatableComponent; rows = []; columns = []; constructor() { // Initialize data and columns this.loadData(); } loadData() { // Simulated API call or actual data retrieval logic this.rows = this.fetchDataFromApi(); this.columns = this.fetchColumnsFromApi(); } onDataChanged() { // Handle data change event and refresh the table this.table.rows = [...this.rows]; this.table.recalculate(); } private fetchDataFromApi() { // Simulated API call or actual data retrieval logic return [ // Data array ]; } private fetchColumnsFromApi() { // Simulated API call or actual data retrieval logic return [ // Columns array ]; } }

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