Question

Within CodeIgniter, I’m doing a select, retrieving some blogposts. But I also want the total reactions of a blogpost with the count() function. But when I’m doing this, it only returns one record.

Example:

    $this->db->select('idee_id, titel, omschrijving, type, top_idee, tbl_users.foto as user_foto');
    $this->db->from('tbl_idee');
    $this->db->join('tbl_types', 'tbl_idee.type_id = tbl_types.type_id');
    $this->db->join('tbl_users', 'tbl_idee.user_id = tbl_users.user_id');
    $this->db->join('tbl_comments', 'tbl_users.user_id = tbl_comments.user_id');
    $this->db->order_by('post_datum', 'DESC');
    $this->db->limit(10);
    $q = $this->db->get();

Now I only get the blogposts without total reactions of one blogpost.
How can I fix this? With a select in a select.?

Thanks

Answer 1

First you need to make the database select the number of each blog post’s comments

$this->db->select('idee_id, titel, omschrijving, type, top_idee,
      tbl_users.foto as user_foto, COUNT(*) AS comments',FALSE);

note the second parameter, it prevents codeigniter from parsing the COUNT() function

you are retrieving data from a blog post together with its comments, so you need to GROUP BY the data which makes a blogpost unique:

$this->db->group_by('idee_id,titel, omschrijving, type,
      top_idee, tbl_users.foto');

the rest of your query should be correct