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TylerDurden
Smarty n00b
Joined: 24 Jul 2003
Posts: 4
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 Posted: Thu Jul 24, 2003 2:03 pm Post subject: template_exists () problem |
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Hi all,
I have a problem with the template_exists () function. Im trying to use it in an if statement to check whether a template file exists before trying to parse it to avoid getting error-messages.
My syntax:
| Code: | {if template_exists("myname.tpl")}
...
{/if}
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However I get a "Call to undefined function: template_exists()" error. What am I doing wrong?
Later I want to use something like:
| Code: | | {if template_exists(`$values[i].category`.tpl)} |
What would be the correct syntax for this?
Thanks in advance.
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AZTEK
Smarty Pro
Joined: 16 Apr 2003
Posts: 235
Location: Purdue University
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| Posted: Thu Jul 24, 2003 3:09 pm Post subject: |
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template_exists is ment to be used outside a template in a PHP file like $smarty->template_exists('blah.tpl'); you could if you wanted to put [php:1:a8bad71318]function template_exists($tpl) {
global $smarty;
return $smarty->template_exists($tpl);
}[/php:1:a8bad71318] in your calling PHP file and make sure to change $smarty to whatever var you called to hold the class and that would work.
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TylerDurden
Smarty n00b
Joined: 24 Jul 2003
Posts: 4
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| Posted: Thu Jul 24, 2003 3:35 pm Post subject: |
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Brilliant, that worked.
Inside my template I'm now calling:
| Code: | | {if template_exists("`$values[i].category`.tpl")} |
Works as intended.
Thanks.
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boots
Administrator
Joined: 16 Apr 2003
Posts: 5611
Location: Toronto, Canada
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| Posted: Thu Jul 24, 2003 5:19 pm Post subject: Re: template_exists () problem |
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| TylerDurden wrote: | | I have a problem with the template_exists () function. Im trying to use it in an if statement to check whether a template file exists before trying to parse it to avoid getting error-messages. |
Tyler, what do you mean by that? Smarty already checks for template existence before it compiles the template. If you don't want the error mesage, you can write an error handler to catch the error. You may also consider writing a Smarty class wrapper that overrides the existing display() and fetch() but include your checking algorithm before delegating to the native methods. I'm not sure what you intend to do in the case that the template doesn't exisit, though. Is that something you want in the users control or do you have a policy for that? |
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TylerDurden
Smarty n00b
Joined: 24 Jul 2003
Posts: 4
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| Posted: Thu Jul 24, 2003 7:22 pm Post subject: |
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Thanks, but AZTEK already provided an answer. If the template doesn't exist it simply isn't parsed. I use this for embedding some static html-pages. However, for future projects, what smarty functions/variables could I use to catch smarty errors for writing, as you suggest, an error-handler.
Thanks.
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AZTEK
Smarty Pro
Joined: 16 Apr 2003
Posts: 235
Location: Purdue University
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| Posted: Thu Jul 24, 2003 7:35 pm Post subject: |
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http://www.php.net/manual/en/function.set-error-handler.php allows you to send PHP and Smarty (and since Smarty uses trigger_error) errors to a custom error function for logging/display.
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TylerDurden
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