Convert form request data to xml in cakephp - php

Question

I'm trying to convert all the form data in a cakephp request object to xml and then convert that to a string so that I can place it in a (blob) column in a mysql table.
I'm trying to do this current using the buildin xml builders in CakePHP 2.x.x as shown below but am getting an error.
if ($this->request->is('post')) {
$this->Survey->create();
$xml = Xml::build($this->request->data);
}
The form is shown below
<?php echo $this->Form->create('Survey'); ?>
<fieldset>
<legend><?php echo __('Add Survey'); ?></legend>
<?php
echo $this->Form->input('Question 1');
echo $this->Form->input('Question 2');
echo $this->Form->input('Question 3');
?>
</fieldset>
<?php echo $this->Form->end(__('Submit')); ?>
The error I'm getting seems to be due to the DOCDocument->createElement(string,string) in the stacktrace. I've also used other methods including building it manually like so:
$doc = new DOMDocument('1.0');
$doc->formatOutput = true;
$doc->loadHTML($this->request->data);
$data = $this->request->input('Xml::build',
array('return' => 'domdocument'));
while(list($key,$value) = each($this->request->data)){
$data = $data . $key . $value;
}
if(isset($this->request->data)){
$doc = new DOMDocument('1.0');
$doc->formatOutput = true;
$root = $doc->appendChild($doc->createElement('survey'));
$post = $this->request->data['Survey'];
unset($post['submit']);
foreach($post as $key => $value){
$node = $doc->createElement($key,$value);
$root->appendChild($node);
}
$test1 = $doc->saveXML();
Any help would be appreciated. Thank you.

Answer 1

See the transforming an array into a string of XML section.