Todd McGrath wrote:
> In the default radius tags, is there a way to replicate if-then-else flow?
>
> Something like:
> <r:if_content part="testy">
> x
> <r:else/>
> y
> </r:if_content>
It would be hard to get Radius to parse this.
> <r:choose>
> <r:when part="testy">
> x
> </r:when>
> <r:otherwise>
> y
> </r:otherwise>
> </r:choose>
That's an interesting idea. Though perhaps it should work more like Ruby:
<r:case>
<r:when part="foo">
x
</r:when>
<r:when part="bar">
y
</r:when>
<r:else>
z
</r:else>
</r:case>
The difficulty is that Radius doesn't provide a way to make true
conditional statements. That's one of the nice aspects of it being a
tagging library (it isolates you from the conditionals and forces you to
put advanced logic in custom tags).
I suppose the when tag could just have a number of attributes that would
allow you to make predefined comparisons:
url="..."
url_starts_with="..."
url_ends_with="..."
has_part="..."
But that seems rather convoluted.
Perhaps the case tag could specify an object (doing some sort of
variable expansion) and the when tag could do comparisons:
<r:case object="${page.title}">
<r:when equals="foo">
x
</r:when>
<r:when ends_with="bar">
y
</r:when>
<r:else>
z
</r:else>
</r:case>
But again, it all seems convoluted.
--
John Long
http://wiseheartdesign.com
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