CollectionView 유효성 검사 (Angular)

FlexGrid는 CollectionView 클래스와 함께 작동하여 항목 및 컬렉션 수준의 유효성 검사 기능을 제공합니다. 이 기능을 사용하려면 세 개의 매개 변수(유효성이 검사되는 데이터 항목, 유효성을 검사할 속성, 이미 값이 파싱됐는지 저장되었는지 여부)를 사용하는 함수로 CollectionView의 getError 속성을 설정합니다.

아래 그리드는 항목의 'Sales' 및 'Expenses' 속성이 양수 값이 포함하도록 하는 getError 함수와 함께 데이터 소스가 사용되고 숫자 또는 날짜 셀을 파싱할 수 없을 경우 에러 메세지를 반환합니다.

CollectionView 기반의 유효성 검사의 작동 방식을 보기 위해서는, "Sales" 또는 "Expenses" 셀에 음수 값을 입력하거나, 숫자 또는 날짜로 파싱할 수 없는 문자열을 숫자/날짜 셀에 입력해 봅니다.

이 데모는 Angular를 기반으로합니다.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import '@angular/compiler'; import { Component, enableProdMode, NgModule } from '@angular/core'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { BrowserModule } from '@angular/platform-browser'; import { WjGridModule } from '@grapecity/wijmo.angular2.grid'; import { CollectionView, DateTime } from '@grapecity/wijmo'; import '@grapecity/wijmo.input'; @Component({ selector: 'app-component', templateUrl: 'src/app.component.html' }) export class AppComponent { data = new CollectionView(this._getData(), { getError: (item: any, prop: string, parsing: boolean) => { // parsing errors if (parsing) { switch (prop) { case 'country': return 'Please select a country from the list.'; case 'date': return 'Please enter a date in the format "M/d/yyyy".' default: return 'Please enter a number.'; } } // data errors if (prop == 'sales' && item.sales < 0) { return 'Sales cannot be negative!'; } if (prop == 'expenses' && item.expenses < 0) { return 'Expenses cannot be negative!'; } // no errors return null; } }); countries = this._getCountries(); private _getCountries(): string[] { return 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','); } private _getData(): any[] { let countries = this._getCountries(), today = new Date(), data = []; for (let i = 0; i < countries.length; i++) { data.push({ id: i, country: countries[i], sales: Math.random() * 10000, expenses: Math.random() * 5000, date: DateTime.addDays(today, -Math.random() * 360), overdue: (i + 1) % 4 == 0 }); } return data; } } @NgModule({ imports: [WjGridModule, BrowserModule], declarations: [AppComponent], bootstrap: [AppComponent] }) export class AppModule { } enableProdMode(); // Bootstrap application with hash style navigation and global services. platformBrowserDynamic().bootstrapModule(AppModule);
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo FlexGrid CollectionView Validation</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="node_modules/systemjs/dist/system.src.js"></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"> <wj-flex-grid [(itemsSource)]="data"> <wj-flex-grid-column [binding]="'id'" [header]="'ID'" [isReadOnly]="true"></wj-flex-grid-column> <wj-flex-grid-column [binding]="'country'" [header]="'Country'" [isRequired]="true" [dataMap]="countries"></wj-flex-grid-column> <wj-flex-grid-column [binding]="'sales'" [header]="'Sales'"></wj-flex-grid-column> <wj-flex-grid-column [binding]="'expenses'" [header]="'Expenses'"></wj-flex-grid-column> <wj-flex-grid-column [binding]="'date'" [header]="'Date'" [isRequired]="true" [format]="'M/d/yyyy'"></wj-flex-grid-column> <wj-flex-grid-column [binding]="'overdue'" [header]="'Overdue'"></wj-flex-grid-column> </wj-flex-grid> </div>
.wj-flexgrid { max-height: 200px; margin-bottom: 12px; } body { margin-bottom: 24px; }
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