Smarty

jazzbazzfazz · Smarty n00b Joined: 08 Oct 2003 Posts: 3

I searched and searched (and tried quite a few things)...

Suppose I want to compare the results of a custom function inside an {if} construction, or assign the result of a function to a new variable...it looks like the way Smarty requires parameters to be listed precludes using functions in such a way.

e.g.

Suppose the function "housevalue" is written to estimate the value of a home, given such parameters as square footage and number of bedrooms

{housevalue sqft=2000 bedrooms=3} might return something like 150000

I use smarty->register_function() to register this function in php/Smarty, then can call it from a Smarty template. Now, what I want to do is use this function in an {if} statement, or in an {assign} statement.

{if housevalue sqft=2000 bedrooms=3 gt 100000} doesn't work...

neither do lots of other wild potshots, e.g.

{if housevalue(2000,3) gt 100000}

...for this latter one I tried using array_values($params), e.g., instead of extract($params).

Any ideas?

mohrt · Posted: Thu Oct 09, 2003 12:18 am Post subject:

This is how other functions assign values:

{housevalue sqft=2000 bedrooms=3 assign="hval"}

Make sure your housevalue function assigns the result, then you can work with {$hval} from there. I'll also point out (as I always do Smile

) that this example of logic should ideally be carried out in the application, not the template.

Monte

jazzbazzfazz · Smarty n00b Joined: 08 Oct 2003 Posts: 3

Well, the assign construct doesn't seem to work, either.

This is my test "testfunc.tpl" file:
=====================
<html>
<head><title>Testfunc</title></head>
<body>
<hr>
{testfunc echo=0 assign="x"}<br>
RESULT: x = [{$x}]
<hr>
{testfunc echo=1 assign="x"}<br>
RESULT: x = [{$x}]
<hr>
</body>
</html>
=====================

This is (an excerpt from) my test .php file:

=====================
function testfunc($params) {
extract($params);
if ($echo == 1) $result = "Echo!";
else $result = "No echo";
return $result;
}
=====================

Of course, I include this in the file also:

$smarty->register_function('testfunc','testfunc');

...

The result looks like this:

______________________________

No echo
RESULT: x = []
______________________________

Echo!
RESULT: x = []
______________________________

Any more suggestions? Thanks for your help!

messju · Posted: Thu Oct 09, 2003 4:39 pm Post subject:

ahem, you have to actually call

$smarty->assign($params['assign'], $result);

in your plugin-function

jazzbazzfazz · Smarty n00b Joined: 08 Oct 2003 Posts: 3

Finally clued in to a solution...looked at the plugin directory and rewrote the function as follows:

==================
function testfunc($params, &$smarty) {
extract($params);
if ($echo == 1) $result = "Echo!";
else $result = "No echo";
if (!empty($params['assign'])) {
$smarty->assign($params['assign'], $result);
} else {
return $result;
}
}
==================

On first reading of the docs, it wasn't clear that user-defined/ user-registered functions (i.e. non plug-ins) have the same construction as plug-ins. In retrospect, that makes complete sense and I should have guessed...

Works like a champ! Thanks for all who scratched their heads on this one...hope this helps.