Demos
Wijmo(Angular)
CollectionView
Creating Views
Filtering
Multi Filter

Multiple Filter Functions (Angular)

The CollectionView.filters property contains an array of filter functions.

To be included in the view, items must satisfy the main filter function and all the functions in the filters array.

The filters property allows components to create and manage their own independent filter functions.

The sample below uses the filters array to filter data by country, independently of the column filtering provided by the FlexGridFilter.

Learn about FlexGrid | Creating Views Documentation | CollectionView API Reference

This example uses Angular.

JavaScript
Angular
Vue
React
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app.component.ts
index.html
app.component.html
app.data.ts
styles.css
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import 'bootstrap.css';
import '@mescius/wijmo.styles/wijmo.css';
import './styles.css';

import { CollectionView } from '@mescius/wijmo';

import '@angular/compiler';
import { Component, Inject, enableProdMode, ɵresolveComponentResources } from '@angular/core';

import { BrowserModule, bootstrapApplication } from '@angular/platform-browser';
import { WjGridModule } from '@mescius/wijmo.angular2.grid';
import { WjGridFilterModule } from '@mescius/wijmo.angular2.grid.filter';
import { DataService, TDataItem } from './app.data';

@Component({
  standalone: true,
  providers: [DataService],
  imports: [WjGridModule, WjGridFilterModule, BrowserModule],
  selector: 'app-component',
  templateUrl: 'src/app.component.html',
})
export class AppComponent {
  view: CollectionView;
  filterText: string;

  constructor(@Inject(DataService) private dataService: DataService) {
    this.view = new CollectionView(dataService.getData());

    // country filter
    this.view.filters.push((item: TDataItem) => {
      return this.filterText ? item.country.toLowerCase().indexOf(this.filterText) > -1 : true;
    });
  }

  // update country filter
  updateFilter(value: string) {
    this.filterText = value;
    this.view.refresh();
  }
}

enableProdMode();

// Resolve resources (templateUrl, styleUrls etc), After resolution all URLs have been converted into `template` strings.
ɵresolveComponentResources(fetch).then(() => {
  // Bootstrap application
  bootstrapApplication(AppComponent).catch((err) => console.error(err));
});
import 'bootstrap.css'; import '@mescius/wijmo.styles/wijmo.css'; import './styles.css'; import { CollectionView } from '@mescius/wijmo'; import '@angular/compiler'; import { Component, Inject, enableProdMode, ɵresolveComponentResources } from '@angular/core'; import { BrowserModule, bootstrapApplication } from '@angular/platform-browser'; import { WjGridModule } from '@mescius/wijmo.angular2.grid'; import { WjGridFilterModule } from '@mescius/wijmo.angular2.grid.filter'; import { DataService, TDataItem } from './app.data'; @Component({ standalone: true, providers: [DataService], imports: [WjGridModule, WjGridFilterModule, BrowserModule], selector: 'app-component', templateUrl: 'src/app.component.html', }) export class AppComponent { view: CollectionView; filterText: string; constructor(@Inject(DataService) private dataService: DataService) { this.view = new CollectionView(dataService.getData()); // country filter this.view.filters.push((item: TDataItem) => { return this.filterText ? item.country.toLowerCase().indexOf(this.filterText) > -1 : true; }); } // update country filter updateFilter(value: string) { this.filterText = value; this.view.refresh(); } } enableProdMode(); // Resolve resources (templateUrl, styleUrls etc), After resolution all URLs have been converted into `template` strings. ɵresolveComponentResources(fetch).then(() => { // Bootstrap application bootstrapApplication(AppComponent).catch((err) => console.error(err)); });
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo CollectionView Multiple Filters</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Polyfills --> <script src="node_modules/core-js/client/shim.min.js"></script> <script src="node_modules/zone.js/fesm2015/zone.min.js"></script> <!-- SystemJS --> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> // workaround to load 'rxjs/operators' from the rxjs bundle System.import('rxjs').then(function (m) { System.set(SystemJS.resolveSync('rxjs/operators'), System.newModule(m.operators)); System.import('./src/app.component'); }); </script> </head> <body> <app-component></app-component> </body> </html>
<div class="container-fluid"> <input #theFilter class="form-control" placeholder="country filter" (input)="updateFilter(theFilter.value.toLowerCase())" /> <p> Result ({{ view.items.length | number:0 }} items): </p> <wj-flex-grid [itemsSource]="view" [alternatingRowStep]="0" [headersVisibility]="'Column'"> <wj-flex-grid-filter></wj-flex-grid-filter> </wj-flex-grid> </div>
import { Injectable } from '@angular/core'; export type TDataItem = { id: number; country: string; downloads: number; sales: number; expenses: number; } @Injectable() export class DataService { getData() { let countries = ['US', 'Germany', 'UK', 'Japan', 'Italy', 'Greece'], data: TDataItem[] = []; for (let i = 0; i < 1000; i++) { data.push({ id: i, country: countries[i % countries.length], downloads: Math.round(Math.random() * 20000), sales: Math.random() * 10000, expenses: Math.random() * 5000 }); } return data; } }
.wj-flexgrid { max-height: 250px; } .container-fluid > .form-control { max-width: 40em; margin-bottom: 1em; }
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'npm:@angular/forms/fesm2022/forms.mjs', }, // packages tells the System loader how to load when no filename and/or no extension packages: { "./src": { defaultExtension: 'ts' }, "node_modules": { defaultExtension: 'js' }, wijmo: { defaultExtension: 'js', } } }); })(this);