Re: Problems with control tag "if"

Tuesday, August 3, 2010, 10:46:36 AM, Lars Weber wrote:

>
> Hi,
>
> i am new with struts 2 and freemarker.
> i can't find where the error is.
>
> i have got a list and it works
>
> <@s.iterator value="products" var="product">
> <@s.property value="%{#product.productData.productName}"/>
> </@s.iterator>
>
> but how can i use the if-control tag in the iteration?
>
> doesn't work
> <@s.iterator value="products" var="product">
> <@s.if test='product.productData.productIsOnline = 1'>
>     available
> </@s.if>
> <@s.property value="%{#product.productData.productName}"/>
> </@s.iterator>
>
> also works: 
> <@s.if test='products.size() > 0'>
> </@s.if>
>
> i tested the different data types like boolean, string and integer for
> product.productData.productIsOnline

Since @s.if, @s.iterator etc are Struts-specific tags, I don't really
know. But aren't you supposed to put the expression in the test
attribute inside %{}? (Mind you, %{} is a Struts-thing, FreeMarker
doesn't care about it.)

Anyway... I have never used Struts/WebWorks, so I wouldn't know, but
the whole thing strikes me as wrong. FreeMaker has its own
#if/#elseif/#else tags, also its own iterator tag (#list), and most
importantly, its own expression language. For a good while JSP has
these too (JSTL with the EL). Still you are supposed to mix these
"languages" (FTL and JSP+JSTL) with Struts tags, and with Strut's own
expression language? Sounds like a call for trouble and confusion...
Is this still the best-practice there? /-: (Also, do you have a
working equivalent of the above in JSP?)

> thanks for help,
> lars

-- 
Best regards,
 Daniel Dekany


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