Can't load a specific page on codeigniter "slug" - php

Question

I'm trying to load a specific page within a controller. I followed the Codeigniter tutorial and the main pages work but the individual page (loaded with view) doesn't load according to the given slug.
blog.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Blog extends CI_Controller {
/**
* Index Page for this controller.
*
* Maps to the following URL
* http://example.com/index.php/index
* - or -
* http://example.com/index.php/Index/index
* - or -
*/
function __construct()
{
parent::__construct();
$this->load->model('blog_model');
$this->load->helper('url_helper');
}
public function index()
{
$data['post'] = $this->blog_model->get_posts();
$data['title'] = 'Blog archive';
$this->load->view('header', $data);
$this->load->view('blog', $data);
$this->load->view('footer', $data);
}
public function view($slug = NULL)
{
$data['post'] = $this->blog_model->get_posts($slug);
if (empty($data['post']))
{
show_404();
}
$data['title'] = $data['post']['title'];
$this->load->view('header', $data);
$this->load->view('post', $data);
$this->load->view('footer', $data);
}
}
blog_model.php
<?php
class Blog_model extends CI_Model {
public function __construct()
{
$this->load->database();
}
public function get_posts($slug = FALSE)
{
if ($slug === FALSE)
{
$this->db->select('*');
$this->db->from('blog_posts');
$this->db->join('category', 'category.id = blog_posts.category_id');
$this->db->join('author', 'author.id = blog_posts.author_id');
$query = $this->db->get();
return $query->result_array();
}
$this->db->select('*');
// $this->db->from('blog_posts');
$this->db->join('category', 'category.id = blog_posts.category_id');
$this->db->join('author', 'author.id = blog_posts.author_id');
// $this->db->where('slug', $slug);
$query = $this->db->get_where('blog_posts', array('slug' => $slug));
return $query->row_array();
}
}
As you can see I tried a few combinations because I'm not sure it's retrieving the table in get_posts when slug is not false.

Answer 1

try like this
call url_helper helper in __construct like following
$this->load->helper('url');
Now, update the routes.php like following
If your URL like
http://www.example.com/blog/view/slug
Your ruote should be like this
$route['blog/view/(:any)'] = 'blog/view/$1';
If your URL like
http://www.example.com/view/slug
Your ruote should be like this
$route['view/(:any)'] = 'blog/view/$1';
And, your get_posts model function repeating queries, use it simply like below
public function get_posts($slug = FALSE){
$this->db->select('*');
$this->db->from('blog_posts');
$this->db->join('category', 'category.id = blog_posts.category_id');
$this->db->join('author', 'author.id = blog_posts.author_id');
if($slug){
$this->db->where(compact('slug'));
}
$query = $this->db->get();
return ($query->num_rows() > 1) ? $query->result_array() : $query->row_array();
}

Answer 2

In the end I solved it by modifying the routes:
At first I had:
$route['default_controller'] = 'Index';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;
$route['blog'] = 'blog';
$route['blog/(:any)'] = 'blog/$1';
So I changed it to:
$route['default_controller'] = 'Index';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;
$route['blog'] = 'blog';
$route['blog/(:any)'] = 'blog/view/$1';
And changed the method name in blog.php from blog to view. "view" looks more standard than "blog" so I left it that way. In 'blog/view/$1' represents the controller, view the method and of course $1 is the first param. Actually if I try Blog/view/hello-world it works too.