Re: How to add custom method using built-in-like syntax?

Thursday, December 9, 2010, 11:56:37 PM, Chris wrote:

> I'd like to add my own functionality to templates using syntax which is
> similar to that for built-ins:
>
> Here's a translation:
> ${mytext?translate_into_swahili}
>
> Is this possible?

No, the ?something syntax is reserved for core functions to avoid name
clashes when new core functions are added. You can do
${translate_into_swahili(mytext)} however. For that, depending on your
application, do one of these:

- Create a template that defines your function(s) then include
  #include or #import that in your normal templates. Note that
  functions can be implemented in pure FreeMarker with #function, or
  in Java as TemplateMethodModelEx-s and then where you would use
  <#function foo>...</#function> use
  <#assign foo=your.class.Name"?new()> instead.

- Implement the function in Java as TemplateMethodModelEx, and the put
  it into the data-model

- Implement the function in Java as TemplateMethodModelEx, and then
  make it available on the single spot where you initialize FreeMarker with
  Configuration.setSharedVariable(name, method)

-- 
Best regards,
 Daniel Dekany


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