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Need Help with Count...

I would like to display the number of comments that have been posted within each link on my site. For example, my site displays a list of videos and a person selects a video, they are then redirected to the page displaying the video where there they can then comment. In the initial list I would like to display the number of comments for each video. The code below is what I got, but all that is being displayed is the number of comments for the first video on every video on the list.

function getCount() {
        $this->db->select('videos.*, count(comments.entry_id) as num_comments');
    $this->db->join('comments', 'comments.entry_id = videos.id');
    $query = $this->db->get();
    return $query->row();

function index() {
        $data['count'] = $this->videos_model->getCount();
        $this->load->view('videos', $data);

        <div class="totalComments">Comments: &lt;?php echo $count->num_comments; ?&gt;</div>

What should I do?

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