On Fri, 20 Feb 2004, Mathew Robertson wrote:
> I often find myself generating template code such as:
>
> <TMPL_UNLESS error>
> <TMPL_UNLESS print>
> <TMPL_IF some_var>
> .... do something...
> </TMPL_IF>
> </TMPL_UNLESS>
> </TMPL_UNLESS>
When I see stuff like that I go into my Perl code and whip up
something like:
<tmpl_if no_error_and_no_print>
... do something ...
</tmpl_if>
<tmpl_if no_error>
... do something else ...
<tmpl_if error>
... do something else entirely ...
</tmpl_if>
That way the template stays simple and I concentrate the complex logic
in the Perl code where it belongs. If possible I try to find a way to
phrase each condition that doesn't involve boolean logic, which few
non-programmers fully understand.
> The equivalent using H::T::E would be:
>
> <TMPL_UNLESS EXPR="((defined error) or (defined print)) and ....">
> ... do something...
> </TMPL_UNLESS>
You can write that a little simpler:
<TMPL_UNLESS EXPR="((error or print) and ...)">
> both syntax's are reasonably ugly...
Beauty is in the eye of the beholder...
> What about a syntax like:
>
> <TMPL_IF !error,!print,some_var>
...which is proven by the fact that I find this much uglier than
either of the two alternatives!
-sam
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