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Clay Navigation Bars
Official Documentation
Clay Navigation Bars Similar to dropdown menus, navigation bars display a list of navigation items. The key difference is navigation bars are displayed in a horizontal bar with all navigation items...
Liferay UI Icon Help
Official Documentation
Liferay UI Icon Help The icon help tag lets you communicate additional information to your users in an unobtrusive way. It renders as an iconic question mark that provides more information through...
Liferay UI Tabs
Official Documentation
Liferay UI Tabs Tabs create dividers that organize content into individual sections. Content can be embedded or included from another JSP. To add tabs to your app, use the tag and specify each...
Liferay Util Tag Library
Official Documentation
Liferay Util Tag Library The Liferay Util taglib is used to pull other resources into a portlet or theme. You can use it to specify which resources to insert at the bottom or top of the page's...
Overriding JSPs
Overriding JSPs You can override JSPs completely using OSGi fragments. This approach is powerful but can make things unstable when the host module is upgraded. By overriding an entire JSP, you...
Developing a PortletMVC4Spring Portlet
Official Documentation
Developing a PortletMVC4Spring Portlet PortletMVC4Spring compliments the Spring Web framework and MVC design pattern by providing annotations that map portlet requests to Controller classes and...
Migrating to PortletMVC4Spring and Jakarta
Official Documentation
Migrating to PortletMVC4Spring and Jakarta There are two possible migrations: You've already used PortletMVC4Spring, and you want to migrate your application to Jakarta. You want to migrate a...
Reference
Official Documentation
Reference PortletMVC4Spring integrates Spring, the Spring Web Framework, and the MVC design pattern with portlet development. As such, it uses configuration files from each of these areas and...
PortletMVC4Spring Annotations
Official Documentation
PortletMVC4Spring Annotations PortletMVC4Spring provides several annotations for mapping requests to controller classes and controller methods. @RenderMapping Annotation Examples...
Creating Service Wrappers
Creating Service Wrappers With Service Wrappers, you can override default service methods to add extra functionality. For example, you may want the value of a field you've added to Liferay's User...
Customizing Localization
Official Documentation
Customizing Localization Liferay ships with 55 translations, making it ideal for deployments all over the world. Sometimes, however, you must modify a translation or provide a new one. Here you can...
Generating Translations Automatically
Official Documentation
Generating Translations Automatically Liferay DXP supports 50 languages out-of-the-box. Each locale has its own language properties file containing keys for its language. When you create an...
Overriding Module Language Translations
Overriding Module Language Translations For Liferay DXP 7.4 U4/Portal 7.4 GA8+, the Language Override tool is the recommended approach. Overriding language translations in specific applications...
Fundamentals
Official Documentation
Fundamentals Liferay development projects consist primarily of simple .jar files. These contain a few extra configuration files that make them OSGi modules, but they're easily understandable by...
Architecture
Official Documentation
Architecture The Liferay DXP/Portal architecture has three parts: Core: Bootstraps DXP and its frameworks. The Core provides a runtime environment for managing services, UI components, and...
Using Servlet Filters
Using Servlet Filters Servlet filters can both pre-process requests as they arrive and post-process responses before they go to the client browser. You can apply functionality to requests and...
Waiting for Life Cycle Events
Waiting for Life Cycle Events Liferay registers life cycle events like portal and portlet initialization into the OSGi service registry. Your OSGi classes can listen for these service registrations...
APIs as OSGi Services
Official Documentation
APIs as OSGi Services After you've learned what a module is and how to deploy one, you can use modules to define APIs and implement them. Liferay APIs are OSGi services, defined by Java interfaces...
Bundle Classloading Flow
Bundle Classloading Flow The OSGi container searches several places for imported classes. It's important to know where it looks and in what order. Liferay DXP's classloading flow for OSGi bundles...
OSGi and Modularity
OSGi and Modularity Modularity makes writing software, especially as a team, fun! Here are some benefits to modular development on Liferay: Liferay's runtime framework is lightweight, fast, and...
Deploying WARs (WAB Generator)
Official Documentation
Deploying WARs (WAB Generator) You can create applications as Java EE-style Web Application ARchive (WAR) artifacts or as Java ARchive (JAR) OSGi bundle artifacts. Bean Portlets, PortletMVC4Spring...
Module Life Cycle
Module Life Cycle In OSGi, all components, Java classes, resources, and descriptors are deployed via modules (OSGi bundles). The MANIFEST.MF file describes the module's physical characteristics,...
Liferay Classloader Hierarchy
Liferay Classloader Hierarchy All Liferay DXP/Portal applications live in an OSGi container. DXP/Portal is a web application deployed on your application server. Its Module Framework bundles...
Specifying Dependencies
Official Documentation
Specifying Dependencies You must satisfy all dependencies to compile and deploy a module successfully. After you find the dependency artifacts, add them as dependencies in your Gradle build file....
Importing Packages
Official Documentation
Importing Packages You often find yourself in a position of needing functionality provided by another module. To access this functionality, you must import packages from other modules into your...
The Benefits of Modularity
The Benefits of Modularity Dictionary.com defines modularity as the use of individually distinct functional units, as in assembling an electronic or mechanical system. The distinct functional units...
Resolving Third Party Library Package Dependencies
Official Documentation
Resolving Third Party Library Package Dependencies An application can rely on multiple OSGi modules. Resolving their Java package dependencies can be challenging. In a perfect world, every package...
Exported Third Party Packages
Official Documentation
Exported Third Party Packages Liferay provides over one-hundred third party Java packages at run time. The com.liferay.portal.bootstrap module exports the packages by specifying individual packages...
Finding Artifacts
Official Documentation
Finding Artifacts To use external artifacts in your project, you must configure their dependencies in your build.gradle Gradle script. Before specifying an artifact as a dependency, you must first...
Configuring Dependencies
Official Documentation
Configuring Dependencies Liferay provides a container where modules can publish and consume functionality through their Java packages. Modules can leverage packages from other modules or...
Exporting Packages
Official Documentation
Exporting Packages In OSGi, packages are private by default. You must explicitly exporting a package so other modules can import and use them. Here's how to export packages: Open your bnd.bnd...
JARs Excluded from WABs
Official Documentation
JARs Excluded from WABs [Liferay-generated web application bundles (WABs) are stripped of third party JARs that contain packages that Liferay exports already. Deploying the same third party...
Module Projects
Official Documentation
Module Projects Liferay applications and customizations are OSGi modules: .jar files containing Java code and some extra configuration for publishing and consuming APIs. A module project comprises...
Using the Gogo Shell
Official Documentation
Using the Gogo Shell The Gogo shell provides a way to interact with the module framework. Among other things, you can Dynamically install/uninstall bundles (modules) Examine package...
Command Line Gogo Shell
Official Documentation
Command Line Gogo Shell If you're in a development environment, you can interact with the module framework locally from the command line. Gogo shell should only be run from the command line in...
Semantic Versioning
Official Documentation
Semantic Versioning Semantic Versioning is a three tiered versioning system for incrementing version numbers based on the degree of API change made in a releasable software component. It's a...
Using an OSGi Service
Official Documentation
Using an OSGi Service Liferay APIs are readily available as OSGi services. You can access a service by creating a field of that service type and annotating the field with @Reference, like this: ...
Adaptive Media Modules Reference
Official Documentation
Adaptive Media Modules Reference Adaptive Media's Modules Some modules in the Adaptive Media app are mandatory and must be enabled for Adaptive Media to function, while others can be disabled. The...
DevOps
Official Documentation
DevOps :::: 2 :gutter: 3 3 3 3 ::: Local Integrations Configuring Documents and Media Previews Enabling Antivirus Scanning for Uploaded Files Configuring Cache Control for Documents and Media...
Enabling Document Creation and Editing with Microsoft Office 365
Official Documentation
Enabling Document Creation and Editing with Microsoft Office 365 Liferay DXP integrates with Microsoft Office 365™ so you can create and edit documents, spreadsheets, and presentations stored in...