Editing tasks in Angular Gantt component

27 Apr 202424 minutes to read

The editing feature can be enabled in the Gantt component by enabling the editSettings.allowEditing and editSettings.allowTaskbarEditing properties.

The following editing options are available to update the tasks in Gantt,

  • Cell
  • Dialog
  • Taskbar
  • Connector line

Cell editing

By setting the edit mode to auto using the mode property, the tasks can be edited through TreeGrid cells by double-clicking.

Note: If the Edit module is not injected, you cannot edit the tasks through the TreeGrid cells.

The following code example demonstrates how to enable cell editing in the Gantt component.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { GanttModule } from '@syncfusion/ej2-angular-gantt'
import { EditService } from '@syncfusion/ej2-angular-gantt'




import { Component, ViewEncapsulation, OnInit } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { EditSettingsModel } from '@syncfusion/ej2-angular-gantt';

@Component({
imports: [
         GanttModule
    ],

providers: [EditService],
standalone: true,
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data" [taskFields]="taskSettings"  [editSettings]="editSettings" [columns]="columns"></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data?: object[];
    public taskSettings?: object;
    public columns?: object[];
    public editSettings?: EditSettingsModel;
    public ngOnInit(): void {
        this.data = [
            {
                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: 4, Progress: 50 },
                    { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50  },
                    { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4, 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'), Duration: 3, Progress: 50 },
                    { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                    { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 }
                ]
            },
        ];
        this.taskSettings = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            child: 'subtasks'
        };
        this.editSettings = {
             allowEditing: true,
             mode:"Auto"
        };
        this.columns =  [
            { field: 'TaskID', headerText: 'Task ID', textAlign: 'Left', width: '100' },
            { field: 'TaskName', headerText: 'Task Name', width: '250' },
            { field: 'StartDate', headerText: 'Start Date', width: '150' },
            { field: 'Duration', headerText: 'Duration', width: '150' },
            { field: 'Progress', headerText: 'Progress', width: '150' },
        ];
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Note: When the edit mode is set to Auto, on performing double-click action on TreeGrid side, the cells will be changed to editable mode and on performing double-click action on chart side, the edit dialog will appear for editing the task details.

Dialog editing

Modify the task details through the edit dialog by setting the edit mode property as Dialog.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { GanttModule } from '@syncfusion/ej2-angular-gantt'
import { EditService } from '@syncfusion/ej2-angular-gantt'




import { Component, ViewEncapsulation, OnInit } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { EditSettingsModel } from '@syncfusion/ej2-angular-gantt';

@Component({
imports: [
         GanttModule
    ],

providers: [EditService],
standalone: true,
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data" [taskFields]="taskSettings"  [editSettings]="editSettings" [columns]="columns"></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data?: object[];
    public taskSettings?: object;
    public columns?: object[];
    public editSettings?: EditSettingsModel;
    public ngOnInit(): void {
        this.data = [
            {
                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: 4, Progress: 50 },
                    { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50  },
                    { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4, 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'), Duration: 3, Progress: 50 },
                    { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                    { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 }
                ]
            },
        ];
        this.taskSettings = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            child: 'subtasks'
        };
        this.editSettings = {
             allowEditing: true,
             mode:"Dialog"
        };
        this.columns =  [
            { field: 'TaskID', headerText: 'Task ID', textAlign: 'Left', width: '100' },
            { field: 'TaskName', headerText: 'Task Name', width: '250' },
            { field: 'StartDate', headerText: 'Start Date', width: '150' },
            { field: 'Duration', headerText: 'Duration', width: '150' },
            { field: 'Progress', headerText: 'Progress', width: '150' },
        ];
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Note: In dialog editing mode, the edit dialog appears when performing double-click action on both TreeGrid or Gantt chart sides.

Sections or tabs in dialog

In the Gantt dialog, you can define the required tabs or editing sections using the addDialogFields and editDialogFields properties. Every tab is defined using the type property.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { GanttModule } from '@syncfusion/ej2-angular-gantt'
import { EditService, ToolbarService } from '@syncfusion/ej2-angular-gantt'




import { Component, ViewEncapsulation, OnInit } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { EditSettingsModel } from '@syncfusion/ej2-angular-gantt';
import { ToolbarItem } from '@syncfusion/ej2-angular-gantt';
import { editingResources } from './data';

@Component({
imports: [
         GanttModule
    ],

providers: [EditService, ToolbarService],
standalone: true,
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data" [taskFields]="taskSettings"  [editDialogFields]="editDialogFields" [addDialogFields]="addDialogFields" [editSettings]="editSettings" [resourceFields]="resourceFields" [resources]= "resources" [toolbar]="toolbar" [labelSettings]="labelSettings" [projectStartDate]="projectStartDate" [projectEndDate]="projectEndDate"></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data?: object[];
    public taskSettings?: object;
    public editDialogFields?: object[];
    public addDialogFields?: object[];
    public toolbar?: ToolbarItem[];
    public resourceNameMapping?: string;
    public resourceIdMapping?: string;
    public resources?: object[];
    public labelSettings?: object;
    public editSettings?: EditSettingsModel;
    public projectStartDate?: Date;
    public projectEndDate?: Date;
    public resourceFields?: object;
    public ngOnInit(): void {
        this.data = [
            {
                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: 4, Progress: 50 },
                    { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50  },
                    { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4, 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'), Duration: 3, Progress: 50 },
                    { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                    { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 }
                ]
            },
        ];
        this.taskSettings = {
                id: 'TaskID',
                name: 'TaskName',
                startDate: 'StartDate',
                endDate: 'EndDate',
                duration: 'Duration',
                progress: 'Progress',
                dependency: 'Predecessor',
                child: 'subtasks',
                notes: 'info',
                resourceInfo: 'resources'
        };
        this.editDialogFields = [
                { type: 'General', headerText: 'General' },
                { type: 'Dependency' },
                { type: 'Resources' },
                { type: 'Notes' }
        ];
        this.addDialogFields = [
        { type: 'General', headerText: 'General' },
        { type: 'Dependency' }
        ];
        this.resourceFields = {
            id: 'resourceId',
            name: 'resourceName'
        };
        this.resources = editingResources;
        this.editSettings = {
            allowAdding: true,
            allowEditing: true,
            mode: 'Dialog',
            allowTaskbarEditing: true
        };
        this.labelSettings = {
                leftLabel: 'TaskName',
                rightLabel: 'resources'
        };
        this.toolbar =  ['Add'];
        this.projectStartDate = new Date('03/28/2019');
        this.projectEndDate = new Date('04/14/2019');
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Limiting data fields in general tab

In the Gantt dialog, you can make only specific data source fields visible for editing by using the addDialogFields and editDialogFields properties. The data fields are defined with type and fields properties.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { GanttModule } from '@syncfusion/ej2-angular-gantt'
import { EditService, ToolbarService } from '@syncfusion/ej2-angular-gantt'




import { Component, ViewEncapsulation, OnInit } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { EditSettingsModel } from '@syncfusion/ej2-angular-gantt';
import { ToolbarItem } from '@syncfusion/ej2-angular-gantt';
import { editingResources } from './data';

@Component({
imports: [
         GanttModule
    ],

providers: [EditService, ToolbarService],
standalone: true,
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data" [taskFields]="taskSettings"  [editDialogFields]="editDialogFields" [editSettings]="editSettings" [resourceNameMapping]= "resourceNameMapping" [toolbar]="toolbar" [resourceFields]="resourceFields" [resources]= "resources" [labelSettings]="labelSettings" [projectStartDate]="projectStartDate" [projectEndDate]="projectEndDate"></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data?: object[];
    public taskSettings?: object;
    public editDialogFields?: object[];
    public resourceNameMapping?: string;
    public resourceIdMapping?: string;
    public toolbar?: ToolbarItem[];
    public resources?: object[];
    public labelSettings?: object;
    public editSettings?: EditSettingsModel;
    public projectStartDate?: Date;
    public projectEndDate?: Date;
    public resourceFields?: object;
    public ngOnInit(): void {
        this.data = [
            {
                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: 4, Progress: 50 },
                    { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50  },
                    { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4, 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'), Duration: 3, Progress: 50 },
                    { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                    { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 }
                ]
            },
        ];
        this.taskSettings = {
                id: 'TaskID',
                name: 'TaskName',
                startDate: 'StartDate',
                endDate: 'EndDate',
                duration: 'Duration',
                progress: 'Progress',
                dependency: 'Predecessor',
                child: 'subtasks',
                notes: 'info',
                resourceInfo: 'resources'
        };
        this.editDialogFields = [
                { type: 'General', headerText: 'General', fields: ['TaskID', 'TaskName', 'isParent'] },
                { type: 'Dependency' },
                { type: 'Resources' }
        ];
        this.resourceFields = {
            id: 'resourceId',
            name: 'resourceName'
        };
        this.resources = editingResources;
        this.editSettings = {
                allowAdding: true,
                allowEditing: true,
                mode: 'Dialog',
                allowTaskbarEditing: true
        };
        this.labelSettings = {
                leftLabel: 'TaskName',
                rightLabel: 'resources'
        };
        this.toolbar =  ['Add'];
        this.projectStartDate = new Date('03/28/2019');
        this.projectEndDate = new Date('04/14/2019');
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Note: You can also define the custom fields in the add/edit dialog General tab using the fieldsproperty.

Task dependencies

In the Gantt component, you can update the dependencies between the tasks and link the tasks interactively. The task dependencies can be mapped from the data source using the dependency property.

You can update the task dependencies using the following ways:

  • Mouse interactions: Using connector points in the taskbar, you can perform drag and drop action to create task dependency links.
  • Edit dialog: Create or remove the task dependencies using the Dependency tab in the edit dialog.
  • Cell editing: Create or remove the task links using cell editing.

The following code example demonstrates how to enable task dependency editing in the Gantt chart using the editSettings property.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { GanttModule } from '@syncfusion/ej2-angular-gantt'
import { EditService } from '@syncfusion/ej2-angular-gantt'




import { Component, ViewEncapsulation, OnInit } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { EditSettingsModel } from '@syncfusion/ej2-angular-gantt';
import { projectNewData } from './data';

@Component({
imports: [
         GanttModule
    ],

providers: [EditService],
standalone: true,
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data" [taskFields]="taskSettings"  [editSettings]="editSettings" [columns]="columns"></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data?: object[];
    public taskSettings?: object;
    public columns?: object[];
    public editSettings?: EditSettingsModel;
    public ngOnInit(): void {
        this.data =  [
    {
        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: 0, Progress: 50 },
            { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50 },
            { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4, Predecessor: "2FS", Progress: 50 },
        ]
    },
    {
        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: 3, Progress: 50 },
            { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
            { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 0, Predecessor: "6SS", Progress: 50 }
        ]
    },
];
        this.taskSettings = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            dependency: 'Predecessor',
            child: 'subtasks'
        };
        this.editSettings = {
            allowTaskbarEditing: true,
            allowEditing: true,
            mode: 'Dialog'
        };
        this.columns =  [
            { field: 'TaskID', headerText: 'Task ID', textAlign: 'Left', width: '100' },
            { field: 'TaskName', headerText: 'Task Name', width: '250' },
            { field: 'StartDate', headerText: 'Start Date', width: '150' },
            { field: 'Duration', headerText: 'Duration', width: '150' },
            { field: 'Progress', headerText: 'Progress', width: '150' },
        ];
    }
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

Alt text

Updating with mouse interaction action

Alt text

Updating with cell Edit

Alt text

Updating with Dialog

Note: When the edit mode is set to Auto, on performing double-click action on TreeGrid side, the cells will be changed to editable mode and on performing double-click action on chart side, the edit dialog will appear for editing the task details.

Update task values using method

The tasks value can be dynamically updated by using the updateRecordById method. You can call this method on any custom action. The following code example shows how to use this method to update a task.

import { NgModule } from '@angular/core'
import { BrowserModule } from '@angular/platform-browser'
import { GanttModule } from '@syncfusion/ej2-angular-gantt'
import { EditService } from '@syncfusion/ej2-angular-gantt'




import { Component, ViewEncapsulation, OnInit, ViewChild } from '@angular/core';
import { Gantt } from '@syncfusion/ej2-gantt';
import { GanttComponent } from '@syncfusion/ej2-angular-gantt';
import { ButtonComponent } from '@syncfusion/ej2-angular-buttons';
import { EditSettingsModel } from '@syncfusion/ej2-angular-gantt';
import { projectNewData } from './data';

@Component({
imports: [
         GanttModule
    ],

providers: [EditService],
standalone: true,
    selector: 'app-root',
    template:
       `<button ejs-button id='updateRecord' (click)='update()'>Update Record</button>
       <br><br><br>
       <ejs-gantt #gantt id="ganttDefault" height="430px" [dataSource]="data" [taskFields]="taskSettings"  [editSettings]="editSettings"></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data?: object[];
    public taskSettings?: object;
    public columns?: object[];
    public editSettings?: EditSettingsModel;
    @ViewChild('gantt', {static: true})
    public ganttObj?: GanttComponent| any;
    public ngOnInit(): void {
        this.data = [
            {
                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: 4, Progress: 50 },
                    { TaskID: 3, TaskName: 'Perform Soil test', StartDate: new Date('04/02/2019'), Duration: 4, Progress: 50  },
                    { TaskID: 4, TaskName: 'Soil test approval', StartDate: new Date('04/02/2019'), Duration: 4, 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'), Duration: 3, Progress: 50 },
                    { TaskID: 7, TaskName: 'List materials', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 },
                    { TaskID: 8, TaskName: 'Estimation approval', StartDate: new Date('04/04/2019'), Duration: 3, Progress: 50 }
                ]
            },
        ];
        this.taskSettings = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            endDate: 'EndDate',
            duration: 'Duration',
            progress: 'Progress',
            dependency: 'Predecessor',
            child: 'subtasks'
        };
        this.editSettings = {
           allowEditing: true
        };
    }
    update(): void {
        let data: object = {
            TaskID: 3,
            TaskName: 'Updated by index value',
            StartDate: new Date('04/03/2019'),
            Duration: 4,
            Progress: 50,
            };
            this.ganttObj.updateRecordByID(data);
        };
}
import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

NOTE: Using the updateRecordById method, you cannot update the task ID value.