Expand a boolean variable to the string "true" or "false"

freemarker
tangens picture tangens · Oct 2, 2009 · Viewed 26.3k times · Source

In a freemarker template I want to expand a boolean variable to a string like that:

<#assign booleanVar = "test".isEmpty() />
state: ${booleanVar} <#-- this throws an exception! -->

This is what I want to get as output:

state: false

The only way I found to reach this goal by now is:

state: <#if booleanVar>true<#else>false</#if>

Is there a easier way to do it?

Answer

tsilb picture tsilb · Oct 2, 2009 
booleanVar?string("true", "false")

Although true/false is default, so 

booleanVar?string

should work fine.

Related questions

How to check if a variable exists in a FreeMarker template?

I have a Freemarker template which contains a bunch of placeholders for which values are supplied when the template is processed. I want to conditionally include part of the template if the userName variable is supplied, something like: [#if_exists …

Read More
Handling null values in Freemarker

How to handle null values in Freemarker? I get some exceptions in the template when null values are present in data.

Read More
What are FTL files

I am new to a project and have to learn it inside out. I see a lot of files with the extension .ftl in them. I'm not sure what they are. I know they can be modified and the user …

Read More