如何将不同模型的两个不同ID从控制器传递到视图

Question

I am having an issue with passing two ids in blog posts. The first id displays a single post and the second one counts the number of posts. Each works well separately but on integrating the two, it selects a wrong post.

This is my code for the first model that fetches the comments

class News_model extends CI_Model {    
     function get_comment($id)
     {
         $this->db->select('comments.*,users.username');
         $this->db->from('comments');
         $this->db->join('users','users.id = comments.user_id', 'left');
         $this->db->where('post_id',$id);
         $this->db->order_by('date_added','asc');
         $query = $this->db->get();
         return $query->result_array();
     }
} 

This is the model that fetches the posts

class News_model extends CI_Model {  
  function get_one_news($news_id)
     {
        $this->db->select('*, news.id as id');
         $this->db->from('news');
         $this->db->join('users' , 'users.id = news.user_id');
         $this->db->where('news.id' , $news_id);
         $query = $this->db->get();
         return $query->first_row('array');
     } 
  function latestnews()     {
        $this->db->select("
        news.*,users.*,comments.*,COUNT(comments.post_id) AS num_comments");
         $this->db->from('news');
         $this->db->join('users' , 'users.id = news.user_id'); 
         $this->db->join('comments' , 'comments.post_id = news.id');
         $this->db->group_by('comments.post_id');
         $this->db->order_by('news.date_added','desc');     
         $this->db->limit(4);
         $query = $this->db->get();
         return $query->result_array(); 
    }
 }

And here is my controller

function view($id)
     {       
        $data['news'] = $this->news_model->get_one_news($id);
        $data["latest_news"] = $this->news_model->latestnews();         
        $data['comments'] = $this->m_comment->get_comment($id);    

        $data['content'] = 'single'; // template part
        $this->load->view('includes/template',$data);
     }

And finally the view file

<div id="sidebar" class="col-md-3 fix-left">
                <!---- Start Widget ---->
                <div class="widget wid-vid">
                    <div class="heading">
                        <h4>Latest News</h4>
                    </div>
                    <div class="content">

                        <div class="tab-content">

                            <div id="most" class="tab-pane fade in active">


                                <div class="post wrap-vid">
                                <?php if(count($latest_news)) { 
                             foreach($latest_news as $l_news){ ?>
                                    <div class="zoom-container">
                                        <div class="zoom-caption">
                                        <a href="<?php echo base_url()?bulletins/view/<?php echo $l_news['id']?>"></a>
                                        </div>
                                    <img src="<?php echo base_url('assets/images/'.$l_news['image'])?>"
 style="height:80px;width:100px;"/>

                                    </div>
                                    <div class="wrapper">
                                    <h5 class="vid-name"><a href="<?php echo  base_url('bulletins/view/'.$l_news['id'])?>"><?php echo 
 substr(strip_tags($l_news['title']), 0, 15).'..';?></a></h5>
                                            <div class="info">  
                                            <h6>By <a href="#"><?php echo $l_news['username']?></a></h6>
                                            <span><i class="fa fa-calendar"></i><?php echo date( 'F jS, Y' , strtotime($l_news['date_added']))?></span>
                                             <span><i class="fa fa-comment-o">/i><?php echo
 $l_news['num_comments'];?></span>                                          
                                            &nbsp;
                                            </div>
                                        &nbsp;
                                    </div>
                                        <?php }}?>

                                </div>

                                </div>

                        </div>
                    </div>
                </div> 

Answer 1

Please check below mentioned solution. You have error in your select cause . When you want data from multiple table in CI and if columnName is same than CI query builder will overwrite value of that column. In this case you need to give alias to columnName . Please check below.

$this->db->select('news.id as newsId,users.id as userId,news.*,users.*,comments.*, COUNT(comments.post_id) as num_comments');

And in your view file you need to change below code.

Find $l_news['id'] and replace with $l_news['newsId']

This will resolve your issue. Let me know if it not works for you.