Hi there,

I have a form that is supposed to post data to an external url and it does...but for some reason form validation does not work. If i add the domyform function in, the form does validate, but it does not post to the external url.

function myform() {
	$fields = new FieldSet(
	 new TextField('name_first','First Name'),
	 new TextField('name_last','Last Name'),
	 new EmailField('email_address','Email Address')
	 );
     // Create actions
	 $validator = new RequiredFields('name_first', 'name_last','email_address');
     	 $actions = new FieldSet(
         new FormAction('domyform', 'Pay Now')
        );
        $form = new Form($this, 'myform', $fields, $actions, $validator);
	 $form->setFormAction('http://www.blah.com');
	 return $form;
         /////this works, but validation fails
    }

the following validates...but does not post to external url

function myform() {
	$fields = new FieldSet(
	 new TextField('name_first','First Name'),
	 new TextField('name_last','Last Name'),
	 new EmailField('email_address','Email Address')
	 );
     // Create actions
	 $validator = new RequiredFields('name_first', 'name_last','email_address');
     	 $actions = new FieldSet(
         new FormAction('domyform', 'Pay Now')
        );
        $form = new Form($this, 'myform', $fields, $actions, $validator);
	 $form->setFormAction('http://www.blah.com');
	 return $form;
    }
  function domyform($data,$form) {
  return $form;
  }

Validation happens server side, not client side, so unless your external handler is validating the request, you'll have to do the validation with javascript. Alternatively, you can post to a local URL, e.g. your myform() handler, and forward the data to your external URL using cURL.

Thanks UncleCheese. I tried the following with the CURL option. It posts the data but the page that i am posting to is one of those payment gateways where the client completes the transaction on the gateway itself (client has to register etc). With the CURL option, i cant get the page to redirect to the new url, seems like CURL handles the entire POST transaction in my site. I did the following:

function domyform($form, $data) {
	$mydata = http_build_query($form); // Build POST string with form variables

	if (!function_exists('curl_init')) {
         echo "Error: $error\n";
         }
      // Create cURL
      $ch = curl_init();
      
      if (curl_error($ch) != "") {
          echo "Error: $error\n";
         }
		// Set URL
		curl_setopt($ch, CURLOPT_URL, 'http://www.blah.com');
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
		curl_setopt($ch, CURLOPT_MAXREDIRS, 1);
		curl_setopt($ch, CURLOPT_POSTFIELDS, $mydata);
		curl_exec($ch);
		curl_close($ch); 		
		}

The following works...but i dont know if from a security point of view if it is a bad practice:

function domyform($form, $data) {
$mydata = http_build_query($form);
$url = 'http://www.blah.com';
header ('Location:'.$url.'?'.$mydata);
}