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Using Liferay Util Get URL
Official Documentation
Using Liferay Util Get URL The get URL tag scrapes the URL provided by the url attribute. If a value is provided for the var attribute, the content from the screen scrape is scoped to that...
Using Liferay Util Whitespace Remover
Official Documentation
Using Liferay Util Whitespace Remover The whitespace remover tag removes line breaks and tabs from code blocks included between the opening and closing of the tag. Below is an example configuration...
Using a JSP and MVC Portlet
Official Documentation
Using a JSP and MVC Portlet An easy way to start developing a web application is to add markup to a JSP file and render it using a portlet Java class. The W3E7 example application demonstrates...
Using Liferay Util Param
Official Documentation
Using Liferay Util Param The param tag lets you set a parameter for an included JSP page. This configuration requires two JSPs. JSP A, the main view of the app, includes JSP B and sets its...
Using Liferay Util Include
Official Documentation
Using Liferay Util Include The include tag lets you include other JSP files in your portlet's JSP, theme, or web content. This can increase readability as well as provide separation of concerns for...
Aggregating Resource Bundles
Official Documentation
Aggregating Resource Bundles When working with a module that shares localized messages, the bnd header must specify the resource bundles you want to associate with the module. Liferay provides a...
Using React
Official Documentation
Using React Build your own solutions using Liferay and React.
Using Spring
Official Documentation
Using Spring If you love the Spring Framework and the Model-View-Controller (MVC) pattern, you can develop portlets using PortletMVC4Spring. If you use this framework, you may already be familiar...
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...
PortletMVC4Spring Project Anatomy
Official Documentation
PortletMVC4Spring Project Anatomy PortletMVC4Spring portlets are packaged in WARs. Liferay provides project templates for creating projects configured to use JSP/JSPX and Thymeleaf templates. Their...
Creating a Model Listener
Creating a Model Listener Model listeners listen for persistence method calls that signal changes to a specified model (such as update or add methods). Most of the methods model listeners use are...
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...
Customizing JSPs with Dynamic Includes
Customizing JSPs with Dynamic Includes The liferay-util:dynamic-include tag is a placeholder into which you can inject content---JavaScript code, HTML, and more. The example project demonstrates...
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...
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...
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...
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...
Overriding Global Language Translations with Language Properties
Overriding Global Language Translations with Language Properties Liferay DXP/Portal implements headings, labels, and messages for many locales using language translations. You can override these...
Using Portlet Filters
Using Portlet Filters Portlet filters intercept requests and responses at the start of each portlet request processing phase so you can add functionality there. This makes them useful for auditing...
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...