Setting Hidden Field in Webfom from cck value

Looks like you have two separate requests. To allow the user to see and delete the submission but not edit it... that's an existing feature request. #269709: Add separate "delete" permissions, add "any" to distiguish from "own" permissions

You may be having trouble with hidden fields if you're setting the default value via a %get variable. It's an existing bug here: #223388: %get[], tokens do not work in disabled or hidden fields

Webform creates 2 arrays: $form_values['submitted'] and $form_values['submitted_tree']. The "submitted_tree" is useful because it contains a hierarchical representation of the form ordered by the field keys. However, Webform uses the "submitted" key to actually save data. The "submitted" array is not hierarchical, instead, all the values are keyed by the unique internal component ID. So you'll need to do something like:

$form_values['submitted'][1] = $output[10];   

I'm struggling with this too. I'm trying to populate a request_id field with a value. I can get the value in the emails, but nothing is stored in the database. Any help would be great. Thanks

  <?php
global $user;

$token = str_pad($user->uid,3,'0',STR_PAD_LEFT) . date("YmdHis");

   //if ($form_values['submitted_tree']['request_id'] == '') {  //Not Working - prevent overwrite on edit
    $form_values['submitted_tree']['request_id'] = $token;  //works in email, but no data saved.
    //$form_values['submitted'][23] = $token;  //Not working
  //}
 
?>

I also vitally need the ability to set the value of a hidden field, programmatically, via the Additional Validation hook. I can use form_set_value and it appears to work fine - pumping the $form_state variable into a drupal_set_message immediately after calling form_set_value shows the values updated correctly - but those changed values don't show up in the submit hook.

Could it possibly be that $form_state isn't passed by reference to the Additional Validation hook?

I'm perfectly willing to patch this myself, just need to know where to start. Any help would be appreciated.

Well... that was easy. As I suspected, the validation hook wasn't passing $form or $form_state by reference. I changed line 1588 of webform.module from:

function webform_client_form_validate($form, $form_state) {

To:

function webform_client_form_validate(&$form, &$form_state) {

And it works. Patch attached.

Thanks, I converted the $form_state to be passed by reference in the in _validate handler (though I left $form as not-by-reference).

I had to roll back the change in #9, since it effectively broke all submissions. :P

It can't be passed by reference, since the $form_state['values']['submitted'] value must not be flattened before the submit handler. So the the $form_state value will continue to not be passed by reference. Please open a new issue with a patch if you've found a suitable work around.

quicksketch,
is there then no known solution yet or is your last comment specific to using a $form_state solution (because $form_state can't be passed by reference)?
or is it then not possible to change or add values to fields through the $form_values['submitted'] array during validation??

or even worse, no value alteration whatsoever during validation?

I changed status back to active since patch did not work and no solution has been offered, sorry in advance if I'm mistaken.

I'm very much interested in a fix or workaround as well.

That's right, currently there's no way to change $form_state values in the validation handler.

Thanks for this thread.
It seems to me that I can use only drupal_set_message or drupal_set_error to interract with user when I use webform module.
Anybody found solution hot to change a field values in Additional Validation or Processing handlers and send changed values back to end user?
Or do I have to create custom module for it?

I use $form_values['submitted_tree']['name_of_the_component'] and $form_values['submitted']['name_of_the_component']
when i want to see the values of the submitted webform fields, send emails and print screens of confirmation (pretty similar to email confirmations: http://drupal.org/node/399064). I put these in the Additional Processing box.

but I only found that $form_state[values][submitted][sid] works for storing the data in the database... (http://drupal.org/node/396168#comment-1392978) I think this could be a bug...

Subscribing

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After hours of struggling with this I was finally able to set the value of a hidden field called 'contact_email' using this set up:

In mymodule.module:

    function mymodule_form_form_id_alter(&$form, &$form_state) {
    $form['#validate'][] = 'mymodule_custom_validate';
}

function mymodule_custom_validate(&$form, &$form_state) {
  $email = 'xxx@yyy.com';
  form_set_value($form['submitted']['contact_email'], $email, $form_state);
}

The important thing here is the ['submitted'] key. Seems like webforms generates the form fields with the 'submitted' array.

I put that same form_set_value code .i.e.

  $email = 'xxx@yyy.com';
  form_set_value($form['submitted']['contact_email'], $email, $form_state);

into the Additional Validation text area of the webform edit and it failed to have any effect, presumably because of the 'pass by reference' issue mentioned earlier in this thread.

Hope this helps.

Thanks for the update ShaunLaws. As noted in the submission guidelines, support for writing custom code is no longer provided in the Webform issue queue, so I'm closing this issue.

For those still pulling your hair out with this, I hammered a good while on it and the following works in the 'additional processing' section of a webform - even for hidden fields:

$form_values['submitted_tree']['phone_number'] = $phone;
$form_values['submitted_tree']['source_address'] = $address;

$form_values['submitted'][13] = $phone;
$form_values['submitted'][11] = $address;

If you turn on 'Full Debug' mode in Webform settings you will get a dump of what each of your submitted id #'s are.

Thank you, Todd! I used this to save a session variable with the form. Only the 'submitted' value appears to be necessary for saving the data to the database, but I went ahead and added both lines in case it makes a difference elsewhere.

<?php
$example_variable = $_SESSION['example_session_variable'];

$form_values['submitted'][example_field_id] = $example_variable;
$form_values['submitted_tree']['example_field_name'] = $example_variable;
?>

This note will pertain to version 3. In this version, the additional processing field has gone away for security reasons. I added a custom submit handler in a hook_form_alter that did some additional processing and that worked just fine. However, when I tried to populate a hidden field in the webform the data was not showing up in the results.

After looking into the webform_php.module file, I realized that any additional submits need to occur between the two webform submit handlers.

So, these lines are key when adding submit handlers in webform v3 in a hook_form_alter:

<?php
    // Add the submit handler after the existing Webform submit handler,
    // but before the second Webform handler. Pop off the first one and add
    // ours second.
    $first = array_shift($form['#submit']);
    array_unshift($form['#submit'], $first, 'my_custom_submit_handler');
?>

Subscribing. Thanks

For the ones of us who still have people on D6:
here is a code that may help... new module name = "webform_val"

there is a lot of stuff out there that can help all though for cck field

Create a link to node/X (in my case 10) with a get var
Example: node/10?n=100 , node 100 has a cck field " field_email_send_to"

function webform_val_form_alter(&$form, &$form_state, $form_id) {   
        if($form_id =='webform_client_form_10')
        {    
// adapted        
            $new_value = "THIS SUCKS";

			if($_GET['n']){
				
				$nid = $_GET['n']; 
				// load the node 
				$node = node_load($nid);
				// cck feild  field_email_send_to
				$email_tosendt0 = $node->field_email_send_to[0]['value'];
				
				$new_value = $email_tosendt0;  
			}
            $form['submitted']['send_email_to']['#default_value']=$new_value;               
        }
}