Codeigniter - Update email only if the email doesn't exist in the database

Question

I have an update page for my users where they can edit their name, email and other info.

So far, they can edit everything. Including their email. They can enter an e

Answer 1

You can try the following code :

$this->form_validation->set_rules('email', 'lang:email', 'trim|required|valid_email|callback__is_unique_email[email]');

and the callback function should look like this :

public  function _is_unique_email($value, $field){
    $result = $this->db->where('uid !=', $this->session->userdata('uid'))
                    ->where($field, $value)
                    ->get('users')
                    ->row_array();

    if ($result) {
        $this->form_validation->set_message('_is_unique_email', $this->lang->line('_is_unique_'));
        return false;
    }

    return true;
}