I have a custom field plugin. It's widget looks somewhat like this:
function mymodule_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
...
$main_widget = $element + array(
'#test' => 'test',
'#type' => 'textarea',
'#attributes' => array('item_capacity' => 3),
'#theme'=>'mymodule_theme'
);
...
}
I need to get a value of another field, attached to current node, and pass it to this widget's theme file. Can i somehow get at least an id of a node that contains current field from hook_field_widget_form()?