refresh parent from iframe.

cjkeane · April 8, 2011

hi everyone.

i have content in an iframe. when a delete link in a form, is clicked. i need the parent window to be refreshed.

i currently have the code below. it seems to refresh the page but not the content. for example, if i manually refresh the page, the data will display, but an automatic refresh through javascript doesn't refresh the content in the iframe. i'd appreaciate the assistance. thanks.


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
    
<link href="styles.css" rel="stylesheet" type="text/css" />

<script type="text/javascript">
function refresh_parent(){
    parent.location.reload();
}
</script>

</head>

<body>
<form method="post" enctype="multipart/form-data">
<table width="350" border="0" cellpadding="1" cellspacing="1" class="box">
<tr> 
<td width="246">
<input type="hidden" name="MAX_FILE_SIZE" value="20000000">
<input name="userfile" type="file" id="userfile"> 
</td>
<td width="80"><input name="upload" type="submit" class="box" id="upload" value=" Upload " onclick="refresh_parent()"></td>
</tr>
</table>
</form>

          <table>
            <tr>
                <th align="left" width="300px">Filename: </th>
                <th align="left" width="200px">Type: </th>
                <th align="left" width="60px">Size: </th>
            </tr>
<?php
if (mysql_num_rows($filelist) > 0) {
  		while ($f = mysql_fetch_array($filelist)) {

		 //GET FILE SIZE 
        $fileSize = $f['size'];

        if ($fileSize>999999){ //IF GREATER THAN 999KB, DISPLAY AS MB 
            $theDiv = $fileSize / 1000000; 
            $fileSize = round($theDiv, 1)." MB"; //round($WhatToRound, $DecimalPlaces) 
        } else { //OTHERWISE DISPLAY AS KB 
            $theDiv = $fileSize / 1000; 
            $fileSize = round($theDiv, 1)." KB"; //round($WhatToRound, $DecimalPlaces) 
        } 
?>

            <tr valign="top">
                <td width="300px"><?php echo $f['name']; ?> </td> 
                <td width="200px"><?php echo $f['type']; ?> </td> 
                <td width="60px"><?php echo $fileSize; ?> </td> 
                <td>
                    [<a href="<?php echo $_SERVER['PHP_SELF']; ?>?action=view&id=<?php echo $f['id']; ?>">DNLD</a> |
                    <a href="<?php echo $_SERVER['PHP_SELF']; ?>?action=delete&id=<?php echo $f['id']; ?>" onclick="refresh_parent()">Delete</a>]
                </td>
            </tr>
<?php
}
} else {
?>
		<tr><td colspan="3">No Files!</td></tr>
<?php
}
?>
	</table>

</body>
</html>
</script>

Adam · April 11, 2011

It may be that the browser is caching the page, and refreshing the parent doesn't refresh the frame's cache. What you could do to guarantee the cache-bust, is add a random number on to the src of the iframe, for example:

<iframe src="iframe-page.php?rid=<?php echo rand(); ?>"></iframe>

To the browser that will be a different page, and cache separately.

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refresh parent from iframe.

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