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Liferay Development

Liferay’s development platform makes developers faster and more efficient by providing a baseline set of features to build upon. Rather than start from scratch, you can start instead with what Liferay provides and build on top of it. Development on Liferay comprises two main strategies:

  1. Customizing look and feel and existing functionality

  2. Developing full-blown applications that take advantage of Liferay’s user management, security, and other features

Most people want to do some amount of both those things. How you go about it depends on how you’re deploying Liferay and what you’re building. You should start with Liferay’s low/no code options, that use such technology as headless APIs, Objects, and various kinds of Client Extensions. These are preferred because they’re compatible in both Liferay Cloud and self-hosted scenarios, and they make upgrading easier by integrating only with public APIs that are unlikely to change.

If, however, you must make a customization or build an application that cannot be done with those technologies, and you’re self-hosted or on Liferay PaaS, you can follow a traditional development model by deploying code to Liferay itself to extend its functionality, customize its look and feel, or build an entirely new application. In this scenario, upgrades can be more challenging, as you have access to internal, Java-based Liferay APIs that could change from version to version.

Whatever decision you make, Liferay’s platform supports the developer and makes it easier and faster to get your application done. From point-and-click tools to CLI utilities, from a full-blown IDE to creating an object-based application in your browser, from headless APIs integrating with front-end frameworks to deployable applications based on Java standards, Liferay empowers developers of all stripes to create sites that look, feel, and perform exactly the way they want them to.

Beyond that, Liferay also has a Marketplace of applications and customizations made available to anyone who wants to download them. Is your application or customization useful beyond your own organization? Consider publishing it on Marketplace and make it more widely available!

To get started, check out the boxes below. For applications, you may want to start with Objects and Client Extensions. For customization, read Customizing Liferay’s Look and Feel.

Customizing Liferay's Look and Feel
Using a Theme Favicon Client Extension Using a CSS Client Extension Using a Theme CSS Client Extension Using a JavaScript Client Extension Using a Theme Sprite Map Client Extension Using a Frontend Data Set Filter Client Extension Using an Editor Config Contributor Client Extension Using a Frontend Data Set Cell Renderer Client Extension Bundling Resources in a JavaScript Import Map Entry Client Extension Client Extensions UI Reference Micro Frontends Themes

Integrating External Applications
Using an IFrame Client Extension Creating a Basic Custom Element Using Routes with Custom Elements

Configuration as Code
Instance Settings YAML Configuration Reference OAuth User Agent YAML Configuration Reference OAuth Headless Server YAML Configuration Reference

Integrating Microservices
Using a Microservice Client Extension Object Action YAML Configuration Reference Object Validation Rule YAML Configuration Reference Workflow Action YAML Configuration Reference Notification Type YAML Configuration Reference

Importing/Exporting Data
Using a Site Initializer Client Extension Batch YAML Configuration Reference

Building Applications
Building a Custom Ticketing System Building a Time Off Requester Using Object Data with React Charts Developing a Java Web Application Developing a JavaScript Application Data Frameworks

Objects
Creating and Managing Objects Using Forms with Objects Using Fragments to Build Forms Using Fragments to Build Multi-Step Forms Deploying Object Widgets to Sites Displaying Object Entries Displaying Object Entries with Collections Enabling Workflow for Objects Picklists Understanding Object Integrations Objects Application Permissions Integrating Objects with Third Party Services

Client Extensions
Working with Client Extensions Packaging Client Extensions Client Extension Reference

Tooling
Liferay Workspace Blade CLI Poshi Test Automation Other Tools Reference

APIs with REST Builder
Producing and Implementing APIs with REST Builder

Core Frameworks
Configuration Framework Dependency Injection Message Bus Portlet Providers Servlets

Liferay Internals
Fundamentals Architecture Extending Liferay Contributing to Liferay Development Reference

Data Sets
Creating Data Sets Data Set Views

Marketplace
Become a Publisher Publishing Apps in Marketplace Publishing Solutions in Marketplace Provisioning DXP Apps

Reference
App Builder Deploying WARs (WAB Generator) JARs Excluded from WABs

App Builder
Creating a Standard Application Creating a Workflow Powered Application Creating the Role Change Request Object Creating the Role Change Request App
Capability:
Development and Tooling
Resource Type:
Official Documentation
Feature:
Developer Tools
Deployment Approach:
Liferay PaaS
Liferay SaaS
Liferay Self-Hosted

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