Xataface Forums

I'm new to xataface, but I have followed the getting started and set up a simple single table application which lets me enter new records and list display the contents. So far, so good.

From the main display, there is a list tab and a "copy set". I wanted to see what this default function was, so I clicked it, but the processing of that URL gives me a connection reset from the browser. I did a bit of debugging (with error_log statements) to see that this is invoking the copy_replace.php action. Within that, I have been able to see that the handle() method is invoked and it seems the php processing is crashing near the end (about 5 lines from the end of the handle function) at the line

$form->accept($this->renderer);

I don't really know from here though what the issue would be. I've just got a vanilla single table out of the box app so I would expect the default xataface application behaviors to work as they would. I would think if I had misconfigured any server side paths or such that the other functions like new record would also not function correctly. Any help would be appreciated.

What version of PHP, MySQL, Xataface are you using? Have you tried checking the error log to see what the problem is?

-Steve

I too have this problem in Windows. It works fine, however, in Linux.

What setup on Windows did you have? Was it running Apache or IIS? Version of php/mysql?

Sorry for Omitting this information.

I'm using the Latest Windows WAMPserver, with PHP downgraded from 5.3.0 to 5.2.11

The downgrade was to eliminate these errors that were occuring (based on some googling)

Deprecated: Assigning the return value of new by reference is deprecated in C:\WampServer\www\xataface\dataface-public-api.php on line 508

Deprecated: Function set_magic_quotes_runtime() is deprecated in C:\WampServer\www\xataface\config.inc.php on line 35

WampServer 2.0i [11/07/09]
- Apache 2.2.11
- MySQL 5.1.36
- PHP 5.3.0 -> This I downgraded to 5.2.11

How about the error log. Any clues in there?

nothing in the php error log and I just get this in the apache one

[Thu Jan 28 13:35:57 2010] [notice] Parent: child process exited with status 128 -- Restarting.
[Thu Jan 28 13:35:58 2010] [notice] Apache/2.2.11 (Win32) PHP/5.3.0 configured -- resuming normal operations
[Thu Jan 28 13:35:58 2010] [notice] Server built: Dec 10 2008 00:10:06
[Thu Jan 28 13:35:58 2010] [notice] Parent: Created child process 3384
[Thu Jan 28 13:35:58 2010] [notice] Child 3384: Child process is running
[Thu Jan 28 13:35:58 2010] [notice] Child 3384: Acquired the start mutex.
[Thu Jan 28 13:35:58 2010] [notice] Child 3384: Starting 64 worker threads.
[Thu Jan 28 13:35:58 2010] [notice] Child 3384: Starting thread to listen on port 80.

It was by adding the error-log statements into copy-replace.php I was able to determine that the above line was where things die (because the error-log statement right after it never made it to the php log.

I can try to capture more if there is something you would like me to turn on that would capture additional data.

Great A segfault is very hard to track down because it is a PHP internal error and they usually don't tell us exactly what line is causing the problem. It is hard for me to debug because I can't reproduce the problem on my setup. My usual strategy is to just follow the trail by placing break points (e.g. echo "here";exit;) in various places, to try to narrow it down to a specific spot.

I guess I'll try to debug into QuickForm.php for this method. Which file actually executes, the one under Dataface or the one under lib/HTML?

Also, what function is this copy set selection supposed to provide?

actually, the QuickForm in the Dataface directory does not have an accept method in it I guess that answers that part.

It inherits from HTML quickform which is in the lib drectory.

OK, I see a trail that runs into QuickForm.accept() -> element.render() -> the Default renderer render() -> Default renderer _prepareTemplate()

Here is the altered version of that function, the bold looks to be where we die

/**
* Helper method for renderElement
*
* @param string Element name
* @param mixed Element label (if using an array of labels, you should set the appropriate template)
* @param bool Whether an element is required
* @param string Error message associated with the element
* @access private
* @see renderElement()
* @return string Html for element
*/
function _prepareTemplate($name, $label, $required, $error)
{
error_log("DefaultRenderer - _prepareTemplate1" . $name);
error_log("DefaultRenderer - _prepareTemplate2" . $label);
error_log("DefaultRenderer - _prepareTemplate3" . $required);
error_log("DefaultRenderer - _prepareTemplate4" . $error);
if (is_array($label)) {
$nameLabel = array_shift($label);
} else {
$nameLabel = $label;
}
error_log("DefaultRenderer - _prepareTemplate5");
if (isset($this->_templates[$name])) {
$html = str_replace('{label}', $nameLabel, $this->_templates[$name]);
} else {
$html = str_replace('{label}', $nameLabel, $this->_elementTemplate);
}
error_log("DefaultRenderer - _prepareTemplate6");
if ($required) {
error_log("DefaultRenderer - _prepareTemplate6a");
$html = str_replace('<!-- BEGIN required -->', '', $html);
$html = str_replace('<!-- END required -->', '', $html);
error_log("DefaultRenderer - _prepareTemplate6a1");
} else {
error_log("DefaultRenderer - _prepareTemplate6b");
$html = preg_replace("/([ \t\n\r]*)?<!-- BEGIN required -->(\s|\S)*<!-- END required -->([ \t\n\r]*)?/i", '', $html);
error_log("DefaultRenderer - _prepareTemplate6b1");
}
error_log("DefaultRenderer - _prepareTemplate7");
if (isset($error)) {
$html = str_replace('{error}', $error, $html);
$html = str_replace('<!-- BEGIN error -->', '', $html);
$html = str_replace('<!-- END error -->', '', $html);
} else {
$html = preg_replace("/([ \t\n\r]*)?<!-- BEGIN error -->(\s|\S)*<!-- END error -->([ \t\n\r]*)?/i", '', $html);
}
error_log("DefaultRenderer - _prepareTemplate8");
if (is_array($label)) {
foreach($label as $key => $text) {
$key = is_int($key)? $key + 2: $key;
$html = str_replace("{label_{$key}}", $text, $html);
$html = str_replace("<!-- BEGIN label_{$key} -->", '', $html);
$html = str_replace("<!-- END label_{$key} -->", '', $html);
}
}
error_log("DefaultRenderer - _prepareTemplate9");
if (strpos($html, '{label_')) {
$html = preg_replace('/\s*<!-- BEGIN label_(\S+) -->.*<!-- END label_\1 -->\s*/i', '', $html);
}
return $html;
} // end func _prepareTemplate


PHP log info
[28-Jan-2010 20:51:31] DefaultRenderer - _prepareTemplate1-copy_replace_form:replace[milestone]
[28-Jan-2010 20:51:31] DefaultRenderer - _prepareTemplate2Milestone
[28-Jan-2010 20:51:31] DefaultRenderer - _prepareTemplate3
[28-Jan-2010 20:51:31] DefaultRenderer - _prepareTemplate4
[28-Jan-2010 20:51:31] DefaultRenderer - _prepareTemplate5
[28-Jan-2010 20:51:31] DefaultRenderer - _prepareTemplate6
[28-Jan-2010 20:51:31] DefaultRenderer - _prepareTemplate6b

So it looks like it is dying at the preg_replace call.

Code: Select all

$html = preg_replace("/([ \t\n\r]*)?<!-- BEGIN required -->(\s|\S)*<!-- END required -->([ \t\n\r]*)?/i", '', $html);


What happens if you just comment this out (this isn't our final solution, but worth testing).

-Steve