CodeIgniter - Checking to see if a value already exists in the database

Question

Im running CodeIgniter for a project of mine ... Im fairly new to this, i have the standard form validation checks for my form, except im unsure of how to check if the value

Answer 1

You just edit your validation rule

$this->form_validation->set_rules('rolename', 'Role Name', 'trim|required|xss_clean|is_unique[table_name.rolename]');