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Nested square brackets problem and a solution

 
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Guardian OfThe Blind
Smarty n00b


Joined: 10 Dec 2005
Posts: 1

PostPosted: Sat Dec 10, 2005 12:31 am    Post subject: Nested square brackets problem and a solution Reply with quote

Smarty can not compile (as far as I know) "nested brackets":

Code:

{$array1[$array2[section].someId].SomeVar}


So I made a workaround that doesn't use {assign}:

Code:

{$array1|@accessArray:$array2[section].someId:"SomeVar"}

function smarty_modifier_accessArray($arr,$elem,$name) {
   return $arr[$elem][$name];
}


Any better ideas?
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boots
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Joined: 16 Apr 2003
Posts: 5611
Location: Toronto, Canada

PostPosted: Sat Dec 10, 2005 1:47 am    Post subject: Reply with quote

Try {foreach} instead of {section} so you can do something like:

{$array1[$item.someId].SomeVar}

I wrote a very similar plugin except it works a bit different: http://www.phpinsider.com/smarty-forum/viewtopic.php?t=3806

You can probably extend it to have the section as an optional last parameter which, if passed, would do cause a 3d lookup. The main difference from yours is that the field name is passed first and the array second -- that way you don't need the @ syntax.

{'SomeVar'|lookup:$array1:$array2[section].someId}

Here it is extended to support that. Of course, it is only untested sample code Smile

[php:1:7190f4e7df]<?php
function smarty_modifier_lookup($value='', $from=array(), $section=null)
{
if (isset($section)) {
if (array_key_exists($section, $from) && array_key_exists($value, $from[$section])) {
return $from[$value];
} else if (array_key_exists($value, $from)) {
return $from[$value];
}
return '';
}
?>
[/php:1:7190f4e7df]

Still, the foreach option looks best to me.
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