Having trouble updating my database with CodeIgniter

[eluser]cvandal[/eluser]
I want to use the same form to create and update content.

I've updated the form as follows:

Code:

<?=form_open('welcome/create_page', 'welcome/update_page');?>

I no longer get the "Cannot modify header information" error, but I still get the "Undefined index: title" and "Undefined index: content".

I have also added the following ID paramter:

Code:

$this->db->where('id', $this->uri->segment(3));