How to send hidden field value to db on webform submit

Question

I am using Drupal 7 webform api, have a created a field in my _form_alter hook in a custom module, but while on page load the hidden field contains the correct value, when I submit the form it does not save to the mysql table, and gives me an empty cell

$form['State'] = array(
  '#type' => 'hidden',
  '#value' => 'Unread',
  '#attributes' => array('id' => array('stateform')),    
);

How can I make it save to the mysql table on submit?

UPDATE:

$form['State'] = array(
'#type' => 'hidden',
'#title' => t('Hidden'),    
'#attributes' => array('id' => array('state')),
);
drupal_add_js(drupal_get_path('module','mymodule') . '/js/custom.js');

Answer 1

You also will need to write a hook_form_submit for your form. In the _form_submit() you will take the hidden value and store it where you like.

That is the simple answer for your question. If you provide more details there could be other ways of handling the data. What is your form action?

Answer 2

You do not need any hooks to do this. You can simply create an element via the webform UI of type "hidden." and it will save when the webform is submitted.

Answer 3

This value should be stored in

$form_state['values']

You can access that in your hook_form_submit. It wouldn't hurt to do a drupal_set_message on $form_state['values'], so that you can see exactly what values are stored there.