select joins and group by in codeigniter - join

Question

In Codeigniter3, I have the following select join model:
public function get_post()
{
$q = $this->db->select('posts.id, posts.active, posts.title, posts.close_date, users.name')
->from('posts')
->join('users', 'posts.user_id = users.id', 'left')
->where('posts.active','1')
->where(['posts.active' => '1', 'posts.close_date >=' => date('Y-m-d')])
->order_by('posts.updated_at', 'DESC')->get();
return $q;
}
How can I list all posts with count posts for each user (count only posts where posts.active = 1 and posts.close_date >= current date)?
If CI can't do the job, please give me the sql query.

Answer 1

Here you go:
With complex queries like this, the best way is to store the sql script in a string variable and use $this->db->query() to execute it.
This query is in MySQL:
public function get_posts() {
$sql = "
SELECT `posts`.`id`, `posts`.`active`, `posts`.`title`, `posts`.`close_date`, users.name, COUNT(`posts`.`user_id`) AS `active_post_count`
FROM `posts`
LEFT JOIN `users` ON `posts`.`user_id` = `users`.`id`
WHERE `posts`.`active` = ?
AND `posts.close_date` >= ?
ORDER BY `posts`.`updated_at` DESC;
";
$now = new DateTime('now');
$binds = [1, $now->format('Y-m-d H:i:s')];
return $this->db->query($sql, $binds)->result_array();
}
Here's a sample code on how to access the post count:
$this->Your_model->get_posts()[0]['active_post_count'];
See CodeIgniter's docs on Generating Query Results:
If you want the result as an object instead, use result_object() over result_array().