Column Binding in JavaScript Query Builder control

20 Apr 2021 / 6 minutes to read

The column definitions are used as the dataSource schema in the Query Builder. This plays a vital role in rendering column values. The query builder operations such as create or delete conditions, and create or delete groups, are performed based on the column definitions. The field property of the columns is necessary to map the data source values in the query builder columns.

If the column field is not specified in the dataSource, the column values will be empty.

Auto generation

The columns are automatically generated when the columns declaration is empty or undefined while initializing the query builder. All the columns in the dataSource are bound as the query builder columns.

Source

Preview

app.ts

index.html

styles.css

import { QueryBuilder } from '@syncfusion/ej2-querybuilder';

let data: Object[] = [
    { OrderID: 10248, CustomerID: 'VINET', EmployeeID: 5, Freight: 32.3800, OrderDate: "07/09/1991" },
    { OrderID: 10249, CustomerID: 'TOMSP', EmployeeID: 6, Freight: 32.3800, OrderDate: "07/09/1991" },
    { OrderID: 10250, CustomerID: 'HANAR', EmployeeID: 4, Freight: 32.3800, OrderDate: "07/09/1991" }];

    let qryBldrObj: QueryBuilder = new QueryBuilder({
        width: '70%',
        dataSource: data,
    });
    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="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/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>
    
</head>

<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div id='querybuilder'></div>
         <div id='property'> </div>
    </div>
</body>
</html>

#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}

.e-query-builder {
  margin: 0 auto;
}

When columns are auto-generated, the column type will be determined from the first record of the dataSource.

Labels

By default, the column label is displayed from the column field value. To override the default label, you have to define the label value.

Operators

The operator for a column can be defined in the operators property. The available operators and its supported data types are:

Operators	Description	Supported Types
startswith	Checks whether the value begins with the specified value.	String
endswith	Checks whether the value ends with the specified value.	String
contains	Checks whether the value contains the specified value.	String
equal	Checks whether the value is equal to the specified value.	String Number Date Boolean
notequal	Checks whether the value is not equal to the specified value.	String Number Date Boolean
greaterthan	Checks whether the value is greater than the specified value.	Date Number
greaterthanorequal	Checks whether a value is greater than or equal to the specified value.	Date Number
lessthan	Checks whether the value is less than the specified value.	Date Number
lessthanorequal	Checks whether the value is less than or equal to the specified value.	Date Number
between	Checks whether the value is between the two-specific values.	Date Number
notbetween	Checks whether the value is not between the two-specific values.	Date Number
in	Checks whether the value is one of the specific values.	String Number
notin	Checks whether the value is not in the specific values.	String Number

Step

The Query Builder allows you to set the step values to the number fields. So that, you can easily access the numeric textbox. Use the step property, to set the step value for number values.

Format

The Query Builder formats date and number values. Use the format property to format date and number values.

Source

Preview

app.ts

index.html

styles.css

import { QueryBuilder, ColumnsModel, RuleModel } from '@syncfusion/ej2-querybuilder';

let employeeData: Object[] = [{
      'EmployeeID': 1,
      'FirstName': 'Nancy',
      'Title': 'Sales Representative',
      'TitleOfCourtesy': 'Ms.',
      'HireDate': '22/07/2001',
      'City': 'Seattle',
      'Country': 'USA'
    },
    {
      'EmployeeID': 2,
      'FirstName': 'Andrew',
      'Title': 'Vice President',
      'TitleOfCourtesy': 'Dr.',
      'HireDate': '21/04/2003',
      'City': 'Tacoma',
      'Country': 'USA'
    },
    {
      'EmployeeID': 3,
      'FirstName': 'Janet',
      'Title': 'Sales Representative',
      'TitleOfCourtesy': 'Ms.',
      'HireDate': '22/07/2001',
      'City': 'Kirkland',
      'Country': 'USA'
    }];

    let columnData: ColumnsModel[] = [
        {
            field: 'EmployeeID', label: 'EmployeeID', type: 'number', operators: [{ key: 'Equal', value: 'equal' },
            { key: 'Greater than', value: 'greaterthan' }, { key: 'Less than', value: 'lessthan' }], step: 10
        },
        { field: 'FirstName', label: 'FirstName', type: 'string' },
        { field: 'TitleOfCourtesy', label: 'Title Of Courtesy', type: 'boolean', values: ['Mr.', 'Mrs.'] },
        { field: 'Title', label: 'Title', type: 'string' },
        { field: 'HireDate', label: 'HireDate', type: 'date', format: 'dd/MM/yyyy' },
        { field: 'Country', label: 'Country', type: 'string' },
        { field: 'City', label: 'City', type: 'string' }
    ];
    let importRules: RuleModel = {
        'condition': 'and',
        'rules': [{
            'label': 'HireDate',
            'field': 'HireDate',
            'type': 'date',
            'operator': 'equal',
            'value': '07/05/1991'
        },
        {
            'label': 'Title',
            'field': 'Title',
            'type': 'string',
            'operator': 'equal',
            'value': 'Sales Manager'
        }]
    };
    let qryBldrObj: QueryBuilder = new QueryBuilder({
        width: '70%',
        dataSource: employeeData,
        columns: columnData,
        rule: importRules,
    });
    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="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/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>
    
</head>

<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div id='querybuilder'></div>
         <div id='property'> </div>
    </div>
</body>
</html>

#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}

.e-query-builder {
  margin: 0 auto;
}

Validation

Validation allows you to validate the conditions and it display errors for invalid fields while using the validateFields method. To enable validation in the query builder , set the allowValidation to true. Column fields are validated after setting allowValidation to true. So, you should manually configure the validation for Operator and Value fields through validation.

Set isRequired validation for Operator and Value fields. Set min, max values for number values.

Source

Preview

app.ts

index.html

styles.css

import { QueryBuilder, ColumnsModel } from '@syncfusion/ej2-querybuilder';
import { Button } from '@syncfusion/ej2-buttons';

let employeeData: Object[] = [{
      'EmployeeID': 1,
      'FirstName': 'Nancy',
      'Title': 'Sales Representative',
      'TitleOfCourtesy': 'Ms.',
      'HireDate': '22/07/2001',
      'City': 'Seattle',
      'Country': 'USA'
    },
    {
      'EmployeeID': 2,
      'FirstName': 'Andrew',
      'Title': 'Vice President',
      'TitleOfCourtesy': 'Dr.',
      'HireDate': '21/04/2003',
      'City': 'Tacoma',
      'Country': 'USA'
    },
    {
      'EmployeeID': 3,
      'FirstName': 'Janet',
      'Title': 'Sales Representative',
      'TitleOfCourtesy': 'Ms.',
      'HireDate': '22/07/2001',
      'City': 'Kirkland',
      'Country': 'USA'
    }];

    let columnData: ColumnsModel[] = [
        { field: 'EmployeeID', label: 'EmployeeID', type: 'number', validation: { isRequired: true } },
        { field: 'FirstName', label: 'FirstName', type: 'string' },
        { field: 'TitleOfCourtesy', label: 'Title Of Courtesy', type: 'boolean', values: ['Mr.', 'Mrs.'] },
        { field: 'Title', label: 'Title', type: 'string' , validation: { isRequired: true } },
        { field: 'HireDate', label: 'HireDate', type: 'date', format: 'dd/MM/yyyy' },
        { field: 'Country', label: 'Country', type: 'string', validation: { isRequired: true } },
        { field: 'City', label: 'City', type: 'string', validation: { isRequired: true } }
    ];
    let qryBldrObj: QueryBuilder = new QueryBuilder({
        width: '70%',
        dataSource: employeeData,
        columns: columnData,
        allowValidation: true
    });
    qryBldrObj.appendTo('#querybuilder');
    let button: Button = new Button({cssClass: `e-primary`, content:'Validation'}, '#qbbutton');
    document.getElementById('qbbutton').onclick = (): void => {
        qryBldrObj.validateFields();
    }

<!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="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-splitbuttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-dropdowns/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-calendars/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/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>
    
</head>

<body>
    <div id='loader'>LOADING....</div>
    <div id='container'>
        <div id='querybuilder'></div>
         <div class='e-qb-button'> 
             <button id='qbbutton' class='e-btn e-primary'> Validate Fields </button>
         </div>
    </div>
</body>
</html>

#container {
    visibility: hidden;
}

#loader {
  color: #008cff;
  height: 40px;
  left: 45%;
  position: absolute;
  top: 45%;
  width: 30%;
}

.e-qb-button {
	margin: 2% 0 0 15%;
}

.e-qb-button button {
	margin-right: 20px;
}

.e-query-builder {
  margin: 0 auto;
}

Contents

Auto generation
Labels
Operators
Step
Format
Validation

Contents

Auto generation
Labels
Operators
Step
Format
Validation

Please provide additional information

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