FreeMarker has a specific directive to do this: ref_directive_ftl but the section about custom parameters don't show how to use this. Here is an example:
Template:
<#ftl attributes={ "subject": "Registrazione"}>
<html>
<body>
Gentile utente
.....
This is the java code to read the parameter:
Template template = cfg.getTemplate(stemplate);
String subject = template.getCustomAttribute("subject");
I spent the last 3 hours to find the correct form of ftl's attributes. I used attributes={ subject: Registrazione} and attributes="{subject: Registrazione}" and I get ris respectively this error:
freemarker.core.ParseException: Could not evaluate expression: {subject : Registrazione} on line 1, column 18 in it/mail/Registration.html
Underlying cause: Variables are not available (certainly you are in a parse-time executed directive). The name of the variable you tried to read: subject in it/mail/Registration.html
at freemarker.core.FMParser.HeaderElement(FMParser.java:2831)
at freemarker.core.FMParser.Root(FMParser.java:2954)
at freemarker.template.Template.<init>(Template.java:149)
and
freemarker.core.ParseException: Expecting a hash of attribute names to values here. on line 1, column 18 in it/mail/Registration.html in it/mail/Registration.html
at freemarker.core.FMParser.HeaderElement(FMParser.java:2888)
at freemarker.core.FMParser.Root(FMParser.java:2954)
at freemarker.template.Template.<init>(Template.java:149)
at freemarker.cache.TemplateCache.loadTemplate(TemplateCache.java:448)
at freemarker.cache.TemplateCache.getTemplate(TemplateCache.java:361)
at freemarker.cache.TemplateCache.getTemplate(TemplateCache.java:235)
Nice FreeMarker!
