Codeigniter: Pass variable to the View - php

Question

I have to table article and table comment. In the home page I want to see how many comment for earch article.
Model
function show_latest_article($start,$display,$cate)
{
$query= $this->db->get_where('news_news', array('News_Cate_ID'=>$cate),$start,$display);
if($cate==0)
{
$query= $this->db->get_where('news_news',$start,$display);
}
return $query->result();
}
function count_comment($id)
{
$query = $this->db->get_where('comment',array('comment_article_id'=>$id) );
return $query->num_rows();
}
Controller
function index() {
$this->load->model('article');
$data=array('article'=>$this->article->show_latest_article(0,8,1),
'sidebar'=>$this->article->side_bar(9),
'count_comment'=> $this->article->count_comment($id),
);
$this->load->view('page/index',$data);
}
In the view I have this
foreach($article as $art)
{
echo $art->title."<br>";
$id= $art->id;
// I want to echo number of comment here.
// Or I want to call function count_comment($id)
}

Answer 1

$this->load->model('article');
$data['article'] = $this->article->show_latest_article(0, 8, 1);
$data['sidebar'] => $this->article->side_bar(9);
$data['count_comment'] => $this->article->count_comment($id);
$this->load->view('page/index', $data);
And it should work.

Answer 2

It's not so clear, where the $id variable come from, but I suggest to join the comments table to your article. It's not a best practice to make queries within loops.
In your model:
public function show_latest_article($ids = array())
{
return $this->db
->select('articles.*, COUNT(comments.id) as comment_count')
->where_in('articles.id', $ids) // You can skip this
->join('comments', 'comments.article_id = articles.id', 'left')
->group_by('articles.id')
->get('articles')
->result();
}
In your controller:
public function index()
{
$data['articles'] = $this->article->show_latest_article(array(0, 8, 1));
$this->load->view('page/index', $data);
}
Just change the field name according to database columns. Also you can skip the where_in condition. (I'm not sure what the three number stands for).
Then in your view, you can simply access the field:
$art->comment_count
EDIT: According to your comment:
$this->db
->select('a.*, (SELECT COUNT(*) FROM comment c WHERE c.comment_article_id = a.News_News_ID ) as counta')
->get('news_news')
->result();

Answer 3

I am writing this answer as you provided code. It could be more simpler if you give more database details. Try below code
function index() {
$this->load->model('article');
$articles = $this->article->show_latest_article(0,8,1);
foreach($articles as $article)
{
$article->comment_count = $this->article->count_comment($article->id);
$all_article[] = $article;
}
$data=array('article'=>$all_article,
'sidebar'=>$this->article->side_bar(9)
);
$this->load->view('page/index',$data);
}
On view
foreach($article as $art)
{
echo $art->title."<br>";
$id= $art->id;
echo $art->comment_count;
}

Answer 4

Controller :
function index() {
$this->load->model('article');
$articles = $this->article->show_latest_article(0,8,1);
$count_comments = Array();
for($i=0;$i<count($articles);$i++){
$count_comments[$i] = $this->article->count_comment($articles->$id);
}
$count_comments =
$data=array('article'=>$articles,
'sidebar'=>$this->article->side_bar(9),
'count_comment'=> $count_comments);
$this->load->view('page/index',$data);
}
In the View :
$i=0;
foreach($article as $art)
{
echo $art->title."<br>";
$id= $art->id;
echo $count_comment[$i];
$i++;
}

Answer 5

Data is passed from the controller to the view by way of an array or an object in the second parameter of the view loading function. Here is an example using an array:
$data = array(
'title' => 'My Title',
'heading' => 'My Heading',
'message' => 'My Message'
);
$this->load->view('blogview', $data);
Also below is the example for object
$data = new Someclass();
$this->load->view('blogview', $data);
PLEASE NOTE: Note: If you use an object, the class variables will be turned into array elements.
You can find out more from below ref URL
Ref: https://ellislab.com/codeigniter/user-guide/general/views.html

Answer 6

First of all in your controller you get count_comment only for specific article ID and not for all articles so you cant do foreach to display comment count of each article.
You need to setup you model better and in model function show_latest_article to use JOIN comments table and do count comment in query.
I will help you with query if you provide me more info about database table of article and comments.
SELECT
article.*,
COUNT(comment.id),0) AS numberOfCommments
FROM article
LEFT JOIN comment
ON comment.article_id = article.id
GROUP BY article.id