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Filter Builder

Customization

Documentation

In this demo, a custom filter operation, "anyof", is implemented. The calculateFilterExpression function converts it into DataSource-compatible operations. The compatible and incompatible filter expressions are displayed under the FilterBuilder.

The set of available group operations is limited to "and" and "or" using the groupOperations array, and the groups’ maximum nesting level is limited to one using the maxGroupLevel.

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const DemoApp = angular.module('DemoApp', ['dx']); DemoApp.controller('DemoController', ($scope) => { $scope.filterValueText = null; $scope.dataSourceValueText = null; $scope.filterBuilderOptions = { fields, value: filter, maxGroupLevel: 1, groupOperations: ['and', 'or'], onInitialized: updateTexts, onValueChanged: updateTexts, customOperations: [{ name: 'anyof', caption: 'Is any of', icon: 'check', editorTemplate: 'tagBoxTemplate', calculateFilterExpression(filterValue, field) { return filterValue && filterValue.length && Array.prototype.concat.apply([], filterValue.map((value) => [[field.dataField, '=', value], 'or'])).slice(0, -1); }, }], }; $scope.categories = categories; $scope.onTagBoxValueChanged = function (e) { e.model.data.setValue(e.value && e.value.length ? e.value : null); }; const TAB_SIZE = 4; function updateTexts(e) { $scope.filterText = formatValue(e.component.option('value')); $scope.dataSourceText = formatValue(e.component.getFilterExpression()); } function formatValue(value, spaces = TAB_SIZE) { if (value && Array.isArray(value[0])) { return `[${getLineBreak(spaces)}${value.map((item) => (Array.isArray(item[0]) ? formatValue(item, spaces + TAB_SIZE) : JSON.stringify(item))).join(`,${getLineBreak(spaces)}`)}${getLineBreak(spaces - TAB_SIZE)}]`; } return JSON.stringify(value); } function getLineBreak(spaces) { return `\r\n${new Array(spaces + 1).join(' ')}`; } });
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> <script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.3/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.2.3/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css@2.2.3/font-awesome.min.css" /> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.8.2/angular.min.js"></script> <script>window.angular || document.write(decodeURIComponent('%3Cscript src="js/angular.min.js"%3E%3C/script%3E'))</script> <script src="https://cdn3.devexpress.com/jslib/21.2.3/js/dx.all.js"></script> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="data.js"></script> <script src="index.js"></script> </head> <body class="dx-viewport"> <div class="demo-container" ng-app="DemoApp" ng-controller="DemoController"> <div dx-filter-builder="filterBuilderOptions" dx-item-alias="data"> <div data-options="dxTemplate: {name: 'tagBoxTemplate'}" dx-tag-box="{ value: data.value, items: categories, onValueChanged: onTagBoxValueChanged, width: 'auto' }" > </div> </div> <div class="results"> <div> <b>Value</b> <pre>{{filterText}}</pre> </div> <div> <b>DataSource's filter expression</b> <pre>{{dataSourceText}}</pre> </div> </div> </div> </body> </html>
.results { margin-top: 50px; display: flex; justify-content: space-between; } .results > div { flex-basis: 49%; max-width: 50%; background-color: rgba(191, 191, 191, 0.15); position: relative; } .results b { position: absolute; top: -25px; } .results pre { padding: 10px 20px; height: 100%; font-size: 13px; overflow: auto; box-sizing: border-box; } .dx-tagbox { min-width: 150px; } .dx-filterbuilder .dx-numberbox { width: 80px; }
const filter = [ ['Category', 'anyof', ['Automation', 'Monitors']], 'or', [ ['Category', '=', 'Televisions'], 'and', ['Price', 'between', [2000, 4000]], ], ]; const categories = [ 'Video Players', 'Televisions', 'Monitors', 'Projectors', 'Automation', ]; const fields = [{ dataField: 'Name', }, { dataField: 'Price', dataType: 'number', format: 'currency', }, { dataField: 'Current_Inventory', dataType: 'number', caption: 'Inventory', }, { dataField: 'Category', filterOperations: ['=', 'anyof'], lookup: { dataSource: categories, }, }, ];