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smarty_function_eval() replacement or workaround?

 
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mpgjunky
Smarty n00b


Joined: 25 Jul 2011
Posts: 4

PostPosted: Mon Jul 25, 2011 12:56 pm    Post subject: smarty_function_eval() replacement or workaround? Reply with quote

Hi,

I am using Smarty v3.0.6 and noticed that the plugin function.eval.php is missing. Does anyone know of a replacement method or workaround?

Cheers,
Michael.
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rodneyrehm
Administrator


Joined: 30 Mar 2007
Posts: 698
Location: Germany, border to Switzerland

PostPosted: Mon Jul 25, 2011 1:54 pm    Post subject: Reply with quote

{eval} is still available: http://www.smarty.net/docs/en/language.function.eval.tpl

for performance reasons you should avoid it whenever possible. Depending on your use-case, {include file="string:{$yourContentToEval}"} may be the better choice. http://www.smarty.net/docs/en/template.resources.tpl
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mpgjunky
Smarty n00b


Joined: 25 Jul 2011
Posts: 4

PostPosted: Mon Jul 25, 2011 2:15 pm    Post subject: Reply with quote

Thanks for the quick reply.

I am actually trying to fix the ArraySmarty renderer for Pear HTML_QuickForm. The renderer was written ages ago, pre version 3 and has not been updated since.

The trouble is with a code snippet that needs evaluating, and returned to the renderer, not displayed immediately.

Specifically:

Code:
   $renderer->setRequiredTemplate(
      '{$label}
         {if $required}
            <span style="color:#FF0000;font-size:16px"><sup>*</sup></span>
         {/if}'
      );


...needs to be evaluated. The end result would be the field label + the "*" to indicate a required field.

Any ideas?

Cheers,
Michael.
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mpgjunky
Smarty n00b


Joined: 25 Jul 2011
Posts: 4

PostPosted: Mon Jul 25, 2011 2:17 pm    Post subject: Reply with quote

PS: This is the code that references the old eval plugin:


Code:
    function _tplFetch($tplSource)
    {
        if (!function_exists('smarty_function_eval')) {
            require SMARTY_DIR . '/plugins/function.eval.php';
        }
      return smarty_function_eval(array('var' => $tplSource), $this->_tpl);
    }// end func _tplFetch
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mohrt
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Joined: 16 Apr 2003
Posts: 7274
Location: Lincoln Nebraska, USA

PostPosted: Mon Jul 25, 2011 2:24 pm    Post subject: Reply with quote

FYI, you can eval a string from PHP like this:

Code:
$output = $smarty->fetch("eval:$string");


Maybe that will be useful for you.
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mpgjunky
Smarty n00b


Joined: 25 Jul 2011
Posts: 4

PostPosted: Mon Jul 25, 2011 2:57 pm    Post subject: Reply with quote

mohrt wrote:
FYI, you can eval a string from PHP like this:

Code:
$output = $smarty->fetch("eval:$string");


Maybe that will be useful for you.


Thanks mohrt, that seems to be just what was needed!
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jrcajdie
Smarty n00b


Joined: 15 Mar 2013
Posts: 1

PostPosted: Fri Mar 15, 2013 2:41 pm    Post subject: Reply with quote

Hello. I need help. I have been searching for hours for a workaround to make PEAR ArraySmarty.php work with Smarty 3 and only had found this.
Could you tell me if you got this to work and tell me how.
Thanks in advance.
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periklis
Smarty n00b


Joined: 17 Mar 2011
Posts: 1

PostPosted: Fri Apr 19, 2013 10:16 am    Post subject: Reply with quote

As mpgjunky and mohrt suggested, here's what you have to do:

Replace the function _tplFetch() inside ArraySmarty.php with:

Code:
    function _tplFetch($tplSource)
    {
        return ($this->_tpl->fetch("eval:$tplSource"));
    }// end func _tplFetch

(You'll have to do other stuff later, like replace _clear_assign() with clearAssign(), but that's easy)
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