I have a node form for a specific content type that has many fields. I want to move these fields into field sets, and wrap that in a class to make it work with my theme. I've done this with hook_form_alter(), and everything is fine, for the most part. I am able to save fields, and the form is displayed correctly.
However, whenever I submit the node edit form, the title flips back to 'Array' and gives me the following errors:
Warning: mb_strlen() expects parameter 1 to be string, array given in drupal_strlen() (line 478 of mysite/includes/unicode.inc).
Notice: Array to string conversion in devel_watchdog() (line 531 of mysite/sites/all/modules/devel/devel.module).
Warning: htmlspecialchars() expects parameter 1 to be string, array given in check_plain() (line 1565 of mysite/includes/bootstrap.inc).
Here is my implementation of hook_form_alter(). It's very simple; all it does is set up the fieldsets, copy the needed form elements into them, and then unset the original element:
/**
* Implements hook_form_id_alter()
**/
function my_module_form_alter(&$form, &$form_state, $form_id) {
switch ($form_id) {
case 'my_content_type_node_form':
$form['fieldset1'] = array(
'#type' => 'fieldset',
'#title' => t('Fieldset 1'),
'#collapsible' => TRUE,
'#collapsed' => FALSE,
'#prefix' => '<div class="grid_4">',
'#suffix' => '</div>',
);
$form['fieldset2'] = array(
'#type' => 'fieldset',
'#title' => t('Fieldset 2'),
'#collapsible' => TRUE,
'#collapsed' => FALSE,
'#prefix' => '<div class="grid_4">',
'#suffix' => '</div>',
);
$form['fieldset3'] = array(
'#type' => 'fieldset',
'#title' => t('Fieldset 3'),
'#collapsible' => TRUE,
'#collapsed' => FALSE,
'#prefix' => '<div class="grid_4">',
'#suffix' => '</div>',
);
//move elements into fieldset1
$form['fieldset1']['title'] = $form['title'];
unset($form['title']);
$form['fieldset1']['field_origin_location'] = $form['field_origin_location'];
unset($form['field_origin_location']);
$form['fieldset1']['field_task_override'] = $form['field_task_override'];
unset($form['field_task_override']);
//move elements into fieldset2
$form['fieldset2']['field_equipment'] = $form['field_equipment'];
unset($form['field_equipment']);
//move elements into fieldset3
$form['fieldset3']['field_additional_troubles'] = $form['field_additional_troubles'];
unset($form['field_additional_troubles']);
$form['fieldset3']['field_resolution'] = $form['field_resolution'];
unset($form['field_resolution']);
$form['fieldset3']['field_repair_parts'] = $form['field_repair_parts'];
unset($form['field_repair_parts']);
$form['seperator'] = array(
'#type' => 'markup',
'#markup' => '<div class="clearfix"></div>',
);
break;
}
}
When I run a debugger and step through it at the time of the error, I see that $form_state['node']->title is set to 'Array', but otherwise I can't determine what is setting it to an array.
The error disappears when this form_alter function is commented out or the module is disabled, so I know that something within this function is triggering the error.
Does anyone have clues of where to start looking to solve this issue? Is there, perhaps, some other thing that I need to do in order to move the form elements? Maybe I am missing a step? Or, is this maybe coming from another module's code and if so, is there a method to find that module?
