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freemarker.md

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Freemarker

interpolation

${...}

Comments

<#-- this is a comment, won't get into the output -->

If else

<#if animals.python.price < animals.elephant.price>
  Pythons are cheaper than elephants today.
<#else>
  Pythons are not cheaper than elephants today.
</#if>

List

<p>WE have these anaimals:
<table border=1>
  <#list animals as animal>
    <tr><td>${animal.name}<td>${animal.price} Euros
  </#list>
</table>

separator in list (e.g. by comma)

<p>Fruits: <#list misc.fruits as fruit>${fruit}<#sep>, </#list>

with else statement

<p>Fruits: <#list misc.fruits as fruit>${fruit}<#sep>, <#else>None</#list>

Include directive

<html>
<head>
  <title>Test page</title>
</head>
<body>
  <h1>Test page</h1>
  <p>Blah blah...
  <#include "/copyright_footer.html">
</body>
</html

Built-ins

  • user?upper_case
  • animal.name?cap_first
  • user?length
  • animals?size
  • inside <#list animals as animal></#list>
    • animal?index 0-based index
    • animal?counter 1-based index
    • animal?item_parity return String "odd" or "even" (e.g.: <td class="${animal?item_parity}Row">)
  • animal.isProtected?string("Y", "N") return "Y" or "N" depending on boolean value
  • animal?item_cycle('lightRow', 'darkRow') more specific of item_parity
  • fruit?join(", ") converts list to String with separator

Dealing with missing variables

<h1>Welcome ${user!"visitor"}!</h1>
<#if user??><h1>Welcome ${user}!</h1></#if>

Preventing auto-escaping

${value?no_esc}