Do you want to develop Liferay resources without having to redeploy to see your portal modifications? Use Liferay Developer Mode! In Developer mode, all caches are removed, so any changes you make are visible right away. Also, you won’t have to reboot the server as often in Developer Mode.
Before you use Developer Mode, you’ll have to add the
portal-developer.properties file to your application server’s configuration
file. Each application server has a different configuration file or UI to
specify system properties; so you’ll need to find out the specific method for
your application server. Let’s demonstrate using the Tomcat application server.
setenv.sh file (
setenv.bat in Windows), find the
variable and add the following to the list of options:
The following is an example of the
CATALINA_OPTS variable lines with the
external-properties option appended to the end (all code must be on one line):
If you’re already using the system property
external-properties to load other
properties files, add
portal-developer.properties to the list and use a comma
to separate it from other entries.
How does Developer Mode let you see your changes more quickly? In Developer Mode, there are several changes to the normal order of operations. Some of these key behaviors are listed below, along with the portal property override settings that trigger them:
- CSS files are loaded individually rather than being combined and loaded as a
single CSS file (
- Layout template caching is disabled (
- The server does not launch a browser when starting up
- FreeMarker Templates for themes and web content are not cached, so changes
are applied immediately
Individual file loading of your styling and behaviors, combined with disabled caching for layout and FreeMarker templates, let’s you see your changes more quickly.
Now, when you modify your theme’s
custom.css file directly in your Liferay
Bundle, you can see your changes applied as you make them! Make sure you copy
any changes you make back into your
_diffs folder, or they’ll be overwritten
when you redeploy your theme.
Let’s add a thumbnail image for our theme now.