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Smarty & Ajax

 
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mellowonpsx
Smarty Rookie


Joined: 03 Jan 2008
Posts: 5

PostPosted: Fri Jan 04, 2008 11:34 am    Post subject: Smarty & Ajax Reply with quote

Stavo iniziando a lavorare con ajax e smarty. Siccome xajax funziona bene (di solito) ho pensato di integrare le due classi.

Il codice prodotto è questo:

index.php
Code:
<?php

include_once("common_smarty.php");
include_once("common_xajax.php");

//--xajax--//
$xajax  =  inizializzaXajax();

$xajax->registerFunction("myFunction");

$xajax->processRequest();

//--smarty--//
$smarty = inizializzaSmarty();

$smarty->assign("title","Benvenuto");

$smarty->assign("xajax_javascript",$xajax->getJavascript("xajax/"));

$smarty->display("index.tpl");

?>


common_ajax.php
Code:

<?php

include_once("config.php");
include_once("auth.lib.php");
include_once("common_page.inc.php");
include_once("common_db.inc.php");

define("XAJAX_DIR", "./xajax/");
require(XAJAX_DIR."xajax.inc.php");

function inizializzaXajax()
{
 $xajax = new xajax();
 
 $xajax->debugOn();
 $xajax->statusMessagesOn();

 return $xajax;
}

function myFunction($arg)
{
 $newContent = "Value of \$arg: ".$arg;

 $objResponse = new xajaxResponse();

 $objResponse->assign("SomeElementId","innerHTML", $newContent);

 return $objResponse;
}

?>


common_smarty.php
Code:
<?php

include_once("config.php");
include_once("auth.lib.php");
include_once("common_page.inc.php");
include_once("common_db.inc.php");

define("SMARTY_DIR", "./Smarty/Libs/");
require(SMARTY_DIR."Smarty.class.php");

function inizializzaSmarty()
{
 $smarty = new Smarty();

 $smarty->template_dir = "templates/";
 $smarty->compile_dir = "templates_c/";
 $smarty->config_dir = "configs/";
 $smarty->cache_dir = "cache/";
 
  return $smarty;
}
?>


index.tlp
Code:
{* Smarty *}
{include file="header.tpl" title="Homepage"}
<div id="SomeElementId">
</div>
<div id="Button">
 <button onclick="xajax_myFunction('It worked!');"> Clicca </button>
</div>
{include file="footer.tpl"}


header.tlp
Code:

{* Smarty Header *}
<html xmlns="http://www.w3.org/1999/xhtml" lang="it">
 <head>
  <title>AX.SY - AjaX SmartY (mellowonpsx project) / page {$title|nl2br} </title>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
  <link rel="stylesheet" type="text/css" href="css/stilebase_ie.css" />
  <!--[if !IE]><!-->
   <link rel="stylesheet" type="text/css" href="css/stilebase.css" />
  <!--<![endif]-->
  {$xajax_javascript}
 </head>
 <body>
  <div id="testa">
   <p class="testo">
    {$title|nl2br}
   </p>
  </div>
{* End of Smarty Header *}


Il footer non ha importanza perchè non fa nulla.

Il problema è che quando schiaccio il bottone viene fuori un errore:
Code:
Received: <br /> <b>Notice</b>: Undefined variable: sResponse in <b>c:\programmi\easyphp1-8\www\ax.sy\xajax\xajax.inc.php</b> on line <b>747</b><br /> <br /> <b>Warning</b>: Cannot modify header information - headers already sent by (output started at c:\programmi\easyphp1-8\www\ax.sy\xajax\xajax.inc.php:747) in <b>c:\programmi\easyphp1-8\www\ax.sy\xajax\xajax.inc.php</b> on line <b>763</b><br /> <?xml version="1.0" encoding="utf-8" ?><xjx><cmd n="as" t="SomeElementId" p="innerHTML">Value of $arg: It worked!</cmd></xjx>


Any idea?
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flatfield
Smarty Rookie


Joined: 30 Apr 2007
Posts: 18
Location: Genova (Italy)

PostPosted: Fri May 23, 2008 4:04 pm    Post subject: Reply with quote

Generalmente l'errore

"Cannot modify header information"

compare quando si è già scritto del codice "a video", cioè HTML o con "print" PHP e si tenta di eseguire un comando PHP di questo tipo

header("location:index.php");

Tale comando, o altri che modificano l'header, devono comparire prima di qualsiasi output
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