Getting Started with Bryntum Gantt in Ionic

Try Ionic demos

Bryntum Gantt is delivered with a variety of Ionic demo applications showing its functionality. All demo applications have been verified to be compatible with Node.js 20.

Version requirements

Minimum supported:

• Angular: 9.0.0 or higher
• TypeScript: 3.6.0 or higher (for TypeScript application)
• Vite 4.0.0 or higher (for application build with Vite)

Recommended:

• Angular: 12.0.0 or higher
• TypeScript: 4.0.0 or higher (for TypeScript application)
• Vite 5.0.0 or higher (for application build with Vite)

Create Ionic application

To get started, the broad steps are as follows:

1. Access to npm registry
2. Create Application
3. Install component
4. Add component to Application
5. Apply styles
6. Run the application

The application we are about to build together is pretty simple, and will look like the illustration below:

Access to npm registry

You can try out Bryntum components for free using our public Bryntum trial packages. If you have a Bryntum license, please refer to our Npm Repository Guide to access the private Bryntum repository.

Create Application

Similarly to all the examples shipped with the distribution, we will be using Ionic CLI to build Ionic applications.

Type the following command to install Ionic CLI:

npm install -g @ionic/cli

We will then create a basic application with Ionic CLI:

ionic start IonicApp blank --type=angular

Here we are using blank, the most simple starter template for the app.

Ionic can use Angular, React, or Vue. By choosing --type=angular, we tell Ionic CLI to generate an application using Angular.

Feel free to select other defaults if needed following instruction provided in the Ionic Framework Documentation

You can then move to your application folder

cd IonicApp

Install component

From your terminal, update project dependencies using the following commands:

npm install @bryntum/gantt@npm:@bryntum/gantt-trial@7.3.0 @bryntum/gantt-angular@7.3.0

npm install @bryntum/gantt@7.3.0 @bryntum/gantt-angular@7.3.0

Add component to Application

Edit the src/app/home/home.module.ts file and add the following:

import { BryntumGanttModule } from '@bryntum/gantt-angular';

@NgModule({
    imports : [
        BryntumGanttModule
    ]
})

Then, edit the src/app/home/home.page.ts file and replace the content with the following:

import { Component, ViewChild} from '@angular/core';
import { BryntumGanttComponent, BryntumGanttProjectModelComponent } from '@bryntum/gantt-angular';
import { ganttProps, projectProps } from './home.config';

@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
  standalone: false,
})
export class HomePage {

    ganttProps = ganttProps;
    projectProps = projectProps;

    @ViewChild('gantt') ganttComponent!: BryntumGanttComponent;
    @ViewChild('project') projectComponent!: BryntumGanttProjectModelComponent;

}

The code above sets up a basic project structure, defining several tasks and establishing dependencies between them.

Bryntum Gantt schedules project tasks with consideration for dependencies, constraints, and calendar configurations. For a detailed introduction to the Bryntum Gantt project entity, please see the data guide.

Add component data

Create a assets/data/data.json file for example data and add the following JSON data to it:

{
  "success": "true",
  "tasks": {
    "rows": [
      {
        "id": 1,
        "name": "Documentation Project",
        "expanded": true,
        "children": [
          {
            "id": 2,
            "name": "Preparation",
            "expanded": true,
            "children": [
              { "id": 6, "name": "Proof-read docs", "startDate": "2026-01-02", "endDate": "2026-01-09" },
              { "id": 3, "name": "Release docs",    "startDate": "2026-01-09", "endDate": "2026-01-10" }
            ]
          },
          {
            "id": 4,
            "name": "Development",
            "expanded": true,
            "children": [
              { "id": 7, "name": "Write API docs",  "startDate": "2026-01-05", "endDate": "2026-01-12" },
              { "id": 8, "name": "Write tutorials", "startDate": "2026-01-10", "endDate": "2026-01-16" },
              { "id": 9, "name": "Create examples", "startDate": "2026-01-12", "endDate": "2026-01-18" }
            ]
          },
          {
            "id": 5,
            "name": "Review & Release",
            "expanded": true,
            "children": [
              { "id": 10, "name": "Team review",     "startDate": "2026-01-18", "endDate": "2026-01-20" },
              { "id": 11, "name": "Final approval",  "startDate": "2026-01-20", "endDate": "2026-01-21" },
              { "id": 12, "name": "Public release",  "startDate": "2026-01-22", "endDate": "2026-01-22" }
            ]
          }
        ]
      }
    ]
  },
  "dependencies": {
    "rows": [
      { "fromTask": 6,  "toTask": 3  },
      { "fromTask": 7,  "toTask": 8  },
      { "fromTask": 8,  "toTask": 9  },
      { "fromTask": 9,  "toTask": 10 },
      { "fromTask": 10, "toTask": 11 },
      { "fromTask": 11, "toTask": 12 }
    ]
  }
}

Create a src/app/home/home.config.ts file with the following content:

import { BryntumGanttProps, BryntumGanttProjectModelProps } from '@bryntum/gantt-angular';

export const projectProps: BryntumGanttProjectModelProps = {
    // Automatically introduces a `startnoearlier` constraint for tasks that (a) have no predecessors,
    // (b) do not use constraints and (c) aren't `manuallyScheduled`
    autoSetConstraints : true,
    loadUrl            : 'assets/data/data.json',
    autoLoad           : true
};
export const ganttProps: BryntumGanttProps = {
    columns : [
        { type : 'name', width : 200 }
    ],
    startDate : new Date(2026, 0, 1),
    endDate   : new Date(2026, 2, 1)
};

And finally, edit the src/app/home/home.page.html file and replace the content with the following:

<ion-content [fullscreen] = "true">
  <div id = "container">
  <bryntum-gantt-project-model
      #project
      [loadUrl] = "projectProps.loadUrl!"
      [autoLoad] = "projectProps.autoLoad!"
      [autoSetConstraints] = "projectProps.autoSetConstraints!"
  ></bryntum-gantt-project-model>

  <bryntum-gantt
      #gantt
      [startDate] = "ganttProps.startDate!"
      [columns] = "ganttProps.columns!"
      [endDate] = "ganttProps.endDate!"
      [project] = "project"
  ></bryntum-gantt>
  </div>
</ion-content>

Apply styles

Stylesheets

The following CSS files are provided with the Bryntum npm packages or in the /build folder of the distribution:

You'll need to import the structural CSS and the preferred theme into your project for the Bryntum Gantt to render correctly, and if you are not replacing the icons used by the component, you will also need to include Font Awesome.

Edit the src/global.scss and add the following:

// FontAwesome is used for icons
@import "~@bryntum/gantt/fontawesome/css/fontawesome.css";
@import "~@bryntum/gantt/fontawesome/css/solid.css";
// Structural CSS
@import "~@bryntum/gantt/gantt.css";
// Bryntum theme of your choice
@import "~@bryntum/gantt/svalbard-light.css";

Sizing the component

By default, the Bryntum Gantt component is configured to occupy 100% of the parent DOM element with a min-height of 10em.

To display the component at the appropriate size, you can, for example, set parent components to take up the full height of the screen.

In your src/app/home/home.page.scss file, add the following:

#container {
    height : 100vh;
}

There are many other solutions depending on the situation. Feel free to adapt the code above regarding your application layout. For more information on the topic, see this guide Sizing the component.

Run the application

From your terminal:

ionic serve

Your application is now available under http://localhost:8100, and your browser should automatically open it for you.

Troubleshooting

Please refer to this Troubleshooting guide.

What to do next?

Further on integration with Ionic

Do you want to know more about how Bryntum Gantt integrates with Ionic and starts to customize your application? We provide you with a complete Ionic guide here.

Learn about Data

Bryntum components often use multiple data collections and entities.

For a detailed explanation of how these elements interact, see our guide to displaying data in Bryntum Gantt.