Scheduling tasks in EJ2 TypeScript Gantt control
4 May 202322 minutes to read
Duration units
In Gantt, the tasks’ duration value can be measured by the following duration units,
- Day
- Hour
- Minute
In Gantt, we can define duration unit for whole project by using durationUnit
property, when we defines the value for this property, this unit will be applied for all task which don’t has duration unit value.
And each task in the project can be defined with different duration units and the duration unit of a task can be defined by the following ways,
- Using
taskFields.durationUnit
property, to map the duration unit data source field. - Defining the duration unit value along with the duration field in the data source.
Mapping the duration unit field
The below code snippet explains the mapping of duration unit data source field to the Gantt control using the taskFields.durationUnit
property.
let GanttData: Object[] = [
{
TaskID: 1,
TaskName: 'Project Initiation',
StartDate: new Date('04/02/2019'),
EndDate: new Date('04/21/2019'),
subtasks: [
{ TaskID: 2, TaskName: 'Identify Site location', StartDate: new Date('04/02/2019'), Duration: 2, DurationUnit:'day', Progress: 50 },
{ TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 12,DurationUnit:'hour', Progress: 70 },
{ TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 240,DurationUnit:'minute', Progress: 80 },
]
},
{
TaskID: 5,
TaskName: 'Project Estimation',
StartDate: new Date('04/02/2019'),
EndDate: new Date('04/21/2019'),
subtasks: [
{ TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/04/2019'), Duration: 3, DurationUnit:'hour', Progress: 50 },
{ TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50, DurationUnit:'day' },
{ TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 480, DurationUnit:'minute', Progress: 70 }
]
},
];
import { Gantt } from '@syncfusion/ej2-gantt';
let gantt: Gantt = new Gantt({
dataSource: GanttData,
height: '450px',
taskFields: {
id: 'TaskID',
name: 'TaskName',
startDate: 'StartDate',
duration: 'Duration',
progress: 'Progress',
durationUnit: 'DurationUnit',
child: 'subtasks'
},
splitterSettings: {
columnIndex: 4
}
});
gantt.appendTo('#Gantt');
<!DOCTYPE html>
<html lang="en">
<head>
<title>EJ2 Gantt</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript Gantt Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css"/>
<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='Gantt'></div>
</div>
</body>
</html>
NOTE
The default value of thedurationUnit
property isday
.
Defining duration unit along with duration field
Duration units for the tasks can also be defined along with the duration values, the below code snippet explains the duration unit for a task along with duration value,
let GanttData: Object[] = [
{
TaskID: 1,
TaskName: 'Project Initiation',
StartDate: new Date('04/02/2019'),
EndDate: new Date('04/21/2019'),
isParent:true,
subtasks: [
{ TaskID: 2, TaskName: 'Identify Site location', StartDate: new Date('04/02/2019'), Duration: '3days', Progress: 50 },
{ TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: '12hours', Progress: 70 },
{ TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: '1800minutes', Progress: 80 },
]
},
{
TaskID: 5,
TaskName: 'Project Estimation',
StartDate: new Date('04/02/2019'),
EndDate: new Date('04/21/2019'),
isParent:true,
subtasks: [
{ TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/04/2019'), Duration: '12hours',Progress: 50 },
{ TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: '3days', Progress: 50 },
{ TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: '480minutes', Progress: 70 }
]
},
];
import { Gantt } from '@syncfusion/ej2-gantt';
let gantt: Gantt = new Gantt({
dataSource: GanttData,
height: '450px',
taskFields: {
id: 'TaskID',
name: 'TaskName',
startDate: 'StartDate',
duration: 'Duration',
progress: 'Progress',
child: 'subtasks'
},
splitterSettings: {
columnIndex: 4
}
});
gantt.appendTo('#Gantt');
<!DOCTYPE html>
<html lang="en">
<head>
<title>EJ2 Gantt</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript Gantt Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css"/>
<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='Gantt'></div>
</div>
</body>
</html>
NOTE:
The edit type of the duration column in Gantt is string, to support editing the duration field along with duration units.
Unscheduled Tasks
Unscheduled tasks are planned for a project without any definite schedule dates. The Gantt control supports rendering the unscheduled tasks. You can create or update the tasks with anyone of start date, end date, and duration values or none. You can enable or disable the unscheduled tasks by using the allowUnscheduledTasks
property. The following images represent the various types of unscheduled tasks in Gantt.
Start Date Only
End Date Only
Duration Only
Milestone
A milestone is a task that has no start and end dates, but it has a duration value of zero. It is represented as follows.
Define unscheduled tasks in data source
You can define the various types of unscheduled tasks in the data source as follows
import { Gantt, Edit } from '@syncfusion/ej2-gantt';
Gantt.Inject(Edit);
let GanttData: Object[] = [
{
TaskID: 1,
TaskName: 'Project Initiation',
StartDate: new Date('04/02/2019'),
EndDate: new Date('04/21/2019'),
subtasks: [
{ TaskID: 2, TaskName: 'Identify Site location', Duration: 3, Progress: 50 },
{ TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Progress: 50 },
{ TaskID: 4, TaskName: 'Soil test approval', EndDate: new Date('04/08/2019'), Progress: 50 },
]
},
{
TaskID: 5,
TaskName: 'Project Estimation',
StartDate: new Date('04/02/2019'),
EndDate: new Date('04/21/2019'),
subtasks: [
{ TaskID: 6, TaskName: 'Develop floor plan for estimation', StartDate: new Date('04/04/2019'), EndDate: new Date('04/08/2019'), Progress: 50 },
{ TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Progress: 50 },
{ TaskID: 8, TaskName: 'Estimation approval', Duration: 0, Progress: 50 }
]
},
];
let gantt: Gantt = new Gantt({
dataSource: GanttData,
height: '450px',
taskFields: {
id: 'TaskID',
name: 'TaskName',
startDate: 'StartDate',
endDate: 'EndDate',
duration: 'Duration',
progress: 'Progress',
child: 'subtasks'
},
editSettings: {
allowEditing: true,
allowTaskbarEditing: true
},
allowUnscheduledTasks: true
});
gantt.appendTo('#Gantt');
<!DOCTYPE html>
<html lang="en">
<head>
<title>EJ2 Gantt</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript Gantt Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css"/>
<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='Gantt'></div>
</div>
</body>
</html>
NOTE
If theallowUnscheduledTasks
property is set to false, then the Gantt control automatically calculates the scheduled date values with a default value of duration 1 and the project start date is considered as the start date for the task.
Working Time Range
In the Gantt control, working hours in a day for a project can be defined by using the dayWorkingTime
property. Based on the working hours, automatic date scheduling and duration validations for a task are performed.
The following code snippet explains how to define the working time range for the project in Gantt.
import { Gantt, DayMarkers } from '@syncfusion/ej2-gantt';
import { GanttData } from 'datasource.ts';
Gantt.Inject(DayMarkers);
let gantt: Gantt = new Gantt({
dataSource: GanttData,
height: '450px',
taskFields: {
id: 'TaskID',
name: 'TaskName',
startDate: 'StartDate',
duration: 'Duration',
progress: 'Progress',
child: 'subtasks'
},
highlightWeekends: true,
dayWorkingTime: [{ from: 9, to: 18 }],
timelineSettings: {
timelineViewMode: 'Day'
},
splitterSettings: {
columnIndex: 0
}
});
gantt.appendTo('#Gantt');
<!DOCTYPE html>
<html lang="en">
<head>
<title>EJ2 Gantt</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript Gantt Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css"/>
<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='Gantt'></div>
</div>
</body>
</html>
NOTE
- Individual tasks can lie between any time within the defined working time range of the project.
- The
dayWorkingTime
property is used to define the working time for the whole project.
Weekend/Non-working days
Non-working days/weekend are used to represent the non-productive days in a project. You can define the non-working days in a week using the workWeek
property in Gantt.
import { Gantt, DayMarkers } from '@syncfusion/ej2-gantt';
import { data } from 'datasource.ts';
Gantt.Inject(DayMarkers)
let gantt: Gantt = new Gantt({
dataSource: data,
height: '450px',
taskFields: {
id: 'TaskID',
name: 'TaskName',
startDate: 'StartDate',
duration: 'Duration',
progress: 'Progress',
child: 'subtasks'
},
workWeek: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday"],
highlightWeekends: true
});
gantt.appendTo('#Gantt');
<!DOCTYPE html>
<html lang="en">
<head>
<title>EJ2 Gantt</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Typescript Gantt Controls" />
<meta name="author" content="Syncfusion" />
<link href="index.css" rel="stylesheet" />
<link href="https://cdn.syncfusion.com/ej2/material.css" rel="stylesheet" type="text/css"/>
<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='Gantt'></div>
</div>
</body>
</html>
By default, Saturdays and Sundays are considered as non-working days/weekend in a project.
In the Gantt control, you can make weekend as working day by setting theincludeWeekend
property totrue
.