Drupal hook_form_alter Not redirecting - drupal

Question

I am using hook form_alter and setting the $form['#redirect'] = 'dir1/dir2/mypage'. But the form refuses to go there.
Form seems to work otherwise, but keeps sending back to the original form instead of the redirect.
The form I am altering is from the root user module.
mymodule_form_alter( ){
... code...
$form['account']['pass'] = array(
'#type' => 'password_confirm',
'#size' => 25, '#description' => t(''),
'#required' => TRUE
);
unset($form['Birthdate']['profile_birthdate']);
unset($form['Birthdate']);
unset($form['#action']);
$form['#validate'] = array('_mymodule_school_registration_validate');
$form['#submit'] = array( '_mymodule_school_registration_submit');
$form['#redirect']= "dir1/dir2/mypage";
}
Please help trying to meet an overdue dead line!! : (
Thanks in advance.

Answer 1

Your hook_form_alter() implementation is not correct:
Without parameters, you're aren't modifying anything, so none of your changes get registered,
$form['#submit'] and $form['#validate'] are already arrays with content, so you should not be resetting them with array(),
unsetting $form['#action'] causes the form to do nothing when submitted,
setting $form['#redirect'] in hook_form_alter() will get overridden by other handlers, and
your hook_form_alter() implementation would affect (and break) every form.
More info: Forms API Reference
Instead, try the following:
function mymodule_form_alter(&$form, $form_state, $form_id) {
if ($form_id === 'form_id_goes_here') {
// Code here
$form['account']['pass'] = array(
'#type' => 'password_confirm',
'#size' => 25,
'#description' => t(''),
'#required' => TRUE
);
unset($form['Birthdate']['profile_birthdate']);
unset($form['Birthdate']);
$form['#validate'][] = '_mymodule_school_registration_validate';
$form['#submit'][] = '_mymodule_school_registration_submit';
}
}
function _mymodule_school_registration_submit($form, &$form_state) {
// Code here
$form_state['redirect'] = 'dir1/dir2/mypage';
}

Answer 2

Try
$form_state['redirect'] = "dir1/dir2/mypage";

Answer 3

If you've only got one handler for your submit you could easily redirect with
function _mymodule_school_registration_submit(..args...) {
...
drupal_goto('somewhere');
}
I think the functionality is the same.
http://api.drupal.org/api/function/drupal_goto/6
I tend to avoid redirects so once you have met your deadline I would refactor your code. You can usually get away with out redirecting.