Column spanning in React Gantt component

2 Feb 202314 minutes to read

The gantt has option to span the adjacent cells. You need to define the colSpan attribute to span cells in the QueryCellInfo event. In the following demo, Work 1 cells have been spanned.

import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { GanttComponent, ColumnsDirective, ColumnDirective } from '@syncfusion/ej2-react-gantt';
import { data } from './datasource';

function App(){
    const queryCellInfoEvent = (args) => {
        switch(args.data.TaskID) {
            case 1:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan= 2;
            }
            break;
            case 2:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan= 2;
            }
            break;
            case 3:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 4:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 5  :
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 7:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
        }
    }
    let ganttInstance;
    const  taskFields = {
        id: 'TaskID',
        name: 'TaskName',
        startDate: 'StartDate',
        duration: 'Duration',
        progress: 'Progress',
        parentID: 'ParentID',
        work1: 'work1',
        work2: 'work2',
    };
    const splitterSettings = {
        position : '75%'
    };
        return (<div>
        <GanttComponent dataSource={data} taskFields={taskFields} queryCellInfo={queryCellInfoEvent} splitterSettings={splitterSettings} gridLines='Both' height='450px' ref={gantt => ganttInstance = gantt}>
         <ColumnsDirective>
            <ColumnDirective field='TaskID' width='100' ></ColumnDirective>
            <ColumnDirective field='TaskName' headerText='Task Name'></ColumnDirective>
            <ColumnDirective field='work1' headerText='Work 1'></ColumnDirective>
            <ColumnDirective field='work2' headerText='Work 2'></ColumnDirective>
            <ColumnDirective field='StartDate'></ColumnDirective>
            <ColumnDirective field='Duration'></ColumnDirective>
            <ColumnDirective field='Progress'></ColumnDirective>
        </ColumnsDirective>
        </GanttComponent></div>)
};
ReactDOM.render(<App />, document.getElementById('root'));
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { GanttComponent, ColumnsDirective, ColumnDirective } from '@syncfusion/ej2-react-gantt';
import { data } from './datasource';
import { QueryCellInfoEventArgs } from '@syncfusion/ej2-react-gantt';

function App(){
    const queryCellInfoEvent = (args: QueryCellInfoEventArgs) => {
        switch(args.data.TaskID) {
            case 1:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan= 2;
            }
            break;
            case 2:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan= 2;
            }
            break;
            case 3:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 4:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 5  :
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 7:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
        }
    }
    let ganttInstance: any;
    const  taskFields: any = {
        id: 'TaskID',
        name: 'TaskName',
        startDate: 'StartDate',
        duration: 'Duration',
        progress: 'Progress',
        parentID: 'ParentID',
        work1: 'work1',
        work2: 'work2',
    };
    const splitterSettings: any = {
        position : '75%'
    };
        return (<div>
        <GanttComponent dataSource={data} taskFields={taskFields} queryCellInfo={queryCellInfoEvent} splitterSettings={splitterSettings} gridLines='Both' height='450px' ref={gantt => ganttInstance = gantt}>
         <ColumnsDirective>
            <ColumnDirective field='TaskID' width='100' ></ColumnDirective>
            <ColumnDirective field='TaskName' headerText='Task Name'></ColumnDirective>
            <ColumnDirective field='work1' headerText='Work 1'></ColumnDirective>
            <ColumnDirective field='work2' headerText='Work 2'></ColumnDirective>
            <ColumnDirective field='StartDate'></ColumnDirective>
            <ColumnDirective field='Duration'></ColumnDirective>
            <ColumnDirective field='Progress'></ColumnDirective>
        </ColumnsDirective>
        </GanttComponent></div>)
};
ReactDOM.render(<App />, document.getElementById('root'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React Gantt</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/material.css" rel="stylesheet" type="text/css"/>
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
     <style>
        #loader {
            color: #008cff;
            height: 40px;
            left: 45%;
            position: absolute;
            top: 45%;
            width: 30%;
        }
    </style>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
        <div id='root'>
            <div id='loader'>Loading....</div>
        </div>
</body>

</html>