Question

I created a helper for returning a user’s username if the user’s unique id is known.

if ( ! function_exists('get_username'))
{
    function get_username($user_id)
    {
        $ci=& get_instance();
        $ci->load->database(); 

        if (empty($user_id))
        {
            return FALSE;
        }

        $ci->db->select('username');
        $ci->db->where('id', $user_id);
        $ci->db->where('activated', 1);
        $ci->db->where('banned', 0);
        $ci->db->limit(1);
        $query = $ci->db->get('users');

        if ($query->num_rows() > 0) //if user exists
        {
            $row = $query->row();
            return $row->username;
        }
        else
        {
            return FALSE;
        }
    }
}

This works in my view if for instance I try:

echo get_username($this->uri->segment(3)); //uri segment 3 is a user id. 

However want to send the username to my view via controller. I tried the following in my controller:

function write_message($user_id = '') //function parameter is 3rd uri segment
{
    $data['username'] = get_username($user_id);
    $this->load->view('my_view', $data);
}

Then in my view I have

echo $username which echoes array instead of the username. What am I doing wrong here?

Answer 1

Your criteria should be clear, and the usrname should be unique i think, so…

if ($query->num_rows() == 1) //if user exists, and unique
{
    $res = $query->result_array();
    return $res[0]['username'];
}
else
{
    return FALSE;
}