Re: Is there a directive like <#continue> and <#exit>?

I've written a few templates where I wanted continue, but not having it isn't a killer.

[#list collection as element]
	[#if element.ignore]
		[#continue /]  [#-- skip over this item and run next item in loop --]
	[/#if]
	[#include "element.ftl" /]
[/#list]

w/o continue

[#list collection as element]
	[#if ! element.ignore]
		[#include "element.ftl" /]
	[/#if]
[/#if]

That's a pretty silly example, in practice continue can actually make the loop body cleaner and shorter. 


And I fully agree with the author that an [#abort /] (or [#exit /], etc) directive that just quietly quits the template IS necessary.
[#ftl]
[#if item?exists]
   1000 lines indented once due to being inside if
[/#if]

w/ abort
[#ftl]
[#if ! item?exists]
	[#abort /]
[#/if]
1000 lines not indented once, simple sanity check at top.


Also we'd like to have sanity checks like this in our header page..
[#if ! backingBean.loggedInUser?exists]
	[#abort /]  [#-- maybe someone found a security hole.. don't show content --]
[/#if]

I know there were a few other scenarios where we wanted an abort.. but I can't recall right now.


-----Original Message-----
From: Attila Szegedi [mailto:[email protected]] 
Sent: Thursday, February 12, 2009 2:55 AM
To: FreeMarker-user
Subject: Re: [FreeMarker-user] Is there a directive like <#continue> and <#exit>?


On 2009.02.12., at 8:14, Jiming Liu wrote:

> Hi,
>
> Sometimes, I need break the parse of file by using <#exit> like  
> directive. Freemarker has <#stop>, but the document says <#stop> is  
> to process exception. Is there any other way I can exit a parsing  
> process?

Parsing, or rendering?

Well, you can put the full body of your template in a macro, and then  
use <#return/> in it. Of course, that doesn't exit from multiple  
levels of macros, includes, etc. For that functionality, <#stop/> is  
the way to go - you just need to make sure to catch and ignore the  
exception on the top-level (again, you might be able to use  
FreeMarker's <#attempt> ... <#recover> on top level for that).

> And I also find that add a directive <#continue> would be very  
> helpful.

What would it do? Continue with next iteration of a loop?

Attila.

> Great thanks
>
> Jiming


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software. With Adobe AIR, Ajax developers can use existing skills and code to
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resources and data with the reach of the web. Download the Adobe AIR SDK and
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