Model binding in EJ2 TypeScript Query builder control

27 Apr 20235 minutes to read
Model binding allows to bind properties for the components used in field, operator, and value columns. To implement model binding, assign fieldModel, operatorModel, and valueModel properties in QueryBuilder.
index.ts
index.html
import { QueryBuilder , RuleModel, ColumnsModel} from '@syncfusion/ej2-querybuilder';
import { getComponent, extend } from '@syncfusion/ej2-base';
import { DropDownList } from '@syncfusion/ej2-dropdowns';

let filter: ColumnsModel [] = [
    { field: 'EmployeeID', label: 'EmployeeID', type: 'number'},
    { field: 'FirstName', label: 'FirstName', type: 'string'},
    { field: 'LastName', label: 'LastName', type: 'string'},
    { field: 'Age', label: 'Age', type: 'number'},
    { field: 'City', label: 'City', type: 'string'},
    { field: 'Country', label: 'Country', type: 'string'},
];
let importRules: RuleModel = {
    'condition': 'and',
    'rules': [{
        'label': 'Employee ID',
        'field': 'EmployeeID',
        'type': 'number',
        'operator': 'equal',
        'value': 1001
    }]
};
let qryBldrObj: QueryBuilder = new QueryBuilder({
    columns: filter,
    rule: importRules,
    enableNotCondition: true,
    displayMode: "Horizontal",
    allowValidation: true,
    fieldModel: {
        allowFiltering: true,
        popupHeight:'400px'
    },
    operatorModel: {
        allowFiltering: true,
        popupHeight:'400px'
    },
    valueModel: {
        numericTextBoxModel: {
            cssClass: 'e-custom'
        },
        multiSelectModel: {
            cssClass: 'e-custom'
        },
        datePickerModel: {
            cssClass: 'e-custom'
        },
        textBoxModel: {
            cssClass: 'e-custom'
        },
        radioButtonModel: {
            cssClass: 'e-custom'
        }
    }
});
qryBldrObj.appendTo('#querybuilder');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Query Builder</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-calendars/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-querybuilder/styles/material.css" rel="stylesheet" />
    <link href="styles.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
    
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div id='querybuilder'></div>
    </div>
	<style type="text/css">	
	</style>
</body>
</html>