CollectionView 유효성 검사

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.

import 'bootstrap.css'; import '@grapecity/wijmo.styles/wijmo.css'; import './styles.css'; import { CollectionView, DateTime } from '@grapecity/wijmo'; import { FlexGrid } from '@grapecity/wijmo.grid'; import '@grapecity/wijmo.input'; document.readyState === 'complete' ? init() : window.onload = init; function init() { // CollectionView with validation var view = new CollectionView(getData(), { getError: (item, prop, parsing) => { // parsing errors if (parsing) { return prop == 'date' ? 'Please enter a date in the format "M/d/yyyy".' : '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; } }); // show the data in a grid new FlexGrid('#theGrid', { itemsSource: view, columns: [ { binding: 'id', header: 'ID', isReadOnly: true }, { binding: 'country', header: 'Country', isRequired: true, dataMap: getCountries() }, { binding: 'sales', header: 'Sales' }, { binding: 'expenses', header: 'Expenses' }, { binding: 'date', header: 'Date', isRequired: true, format: 'M/d/yyyy' }, { binding: 'overdue', header: 'Overdue' } ] }); // create some random data function getCountries() { return 'US,Germany,UK,Japan,Sweden,Norway,Denmark'.split(','); } function getData() { let countries = 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; } }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>GrapeCity Wijmo FlexGrid CollectionView Validation</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="node_modules/systemjs/dist/system.src.js"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app'); </script> </head> <body> <div class="container-fluid"> <div id="theGrid"> </div> </div> </body> </html>
.wj-flexgrid { max-height: 200px; margin-bottom: 12px; } body { margin-bottom: 24px; }
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