Re: discover macro name

Here is  code for a method that you could expose to your FTL to get
the current macro name.

import freemarker.core.Environment;
import freemarker.core.Macro;

public class GetMacroName extends TemplateMethodModel {
   public TemplateModel exec(List args) throws TemplateModelException {
       Environment env = Environment.getCurrentEnvironment();
       Macro.Context mc = env.getCurrentMacroContext();
       if (mc == null) {
            throw...
        }
       String macroName = mc.getMacro().getName();
       return new SimpleScalar(macroName);
  }
}


There is one problem however. Some of the API in there is package
private. You'd either have to put the GetMacroName() in the
freemarker.core package or make a couple of things in there public and
rebuild.

JR


On Sun, Mar 23, 2008 at 10:59 AM, Ioannis Cherouvim <[email protected]> wrote:
> Hi
>
>  OK here are the details.
>
>  I use freemarker to render html in my Java web applications. Usually I
>  will have macros to render some html snippets such as search form,
>  search result, login form etc because I reuse them in many projects and
>  they feature the exact same html. The graphic designers (the people who
>  initially do the static html layout) want to be able to see where these
>  snippets start and end, in the final rendered product (when running on
>  "debug" mode), in order to maintain/debug html rendering issues.
>
>  I've got around 30 of those macros.
>
>  So, instead of doing the following:
>  <#macro renderSearchForm>
>   <!-- renderSearchForm starts -->
>   <p>bla bla bla...</p>
>   <!-- renderSearchForm ends -->
>  </#macro>
>
>  <#macro renderLoginForm>
>   <!-- renderLoginForm starts -->
>   <p>bla bla bla...</p>
>   <!-- renderLoginForm ends -->
>  </#macro>
>
>
>  I'd like to be able to do something like:
>  <#macro renderSearchForm>
>   <!-- ${currentMacroname} starts -->
>   <p>bla bla bla...</p>
>   <!-- ${currentMacroname} ends -->
>  </#macro>
>
>  So I don't have to maintain too much stuff, especially in case of macro
>  name refactorings.
>
>  This will eventually lead me to a more generic macro such as:
>  <#macro renderSearchForm>
>   <@commentWrap currentMacroname>
>      <p>bla bla bla...</p>
>   </@commentWrap>
>  </#macro>
>
>  Which will be a macro wrapping the nested html (using <#nested /> ) with
>  the appropriate html comments.
>
>  thanks,
>  Ioannis
>
>
>
>  Daniel Dekany wrote:
>  > Sunday, March 23, 2008, 7:30:32 AM, Ioannis Cherouvim wrote:
>  >
>  >> Hello
>  >>
>  >> I'd like to know if it is possible to dynamically discover the currently
>  >> executing macro name. For example:
>  >> <#macro foo>
>  >>   ...
>  >> </#macro>
>  >>
>  >> What do I have to do in order for the macro above to output the word
>  >> "foo"? That is the name of the macro.
>  >
>  > I don't know, but, out of curiosity, what is that needed for?
>  >
>  >> thanks,
>  >> Ioannis
>  >
>
>
>
>
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