Help - Validate & Repopulate a Dropdown?

[eluser]hawthornpublications[/eluser]
I've used the form_dropdown function to generate a dropdown menu using an array of options. After the form fails validation, I want the dropdown to maintain the selection but can't figure out how to do it.

Code:

$meals = array(
'select_one' => 'Select One',
'breakfast' => 'Breakfast',
'lunch' => 'Lunch',
'dinner' => 'Dinner'
);

...

<?= form_dropdown('meals', $meals, 'select_one') ?>

In the form_dropdown function I have the default currently set to

Code:

'select_one'

but I imagine that's where I might put

Code:

$this->validation->meals

or something similar.. but it doesn't work.

Any ideas?