Codeigniter pagination giving 404 error - php

Question

Could you help me with my problem about pagination in Codeigniter? I have a view that lists books. I wrote some code and now I see the buttons but the content is not limited as I wished. Can't find what is wrong with the code.
That is the updated code:
Controller:
public function index($offset=0){
$config['base_url'] = 'http://localhost/myLibrary/books/index';
//$config['total_rows'] = 200;
$config['total_rows'] = $this->db->get('books')->num_rows();
$config['per_page'] = 1;
$config['uri_segment']= 3;
$config['attributes'] = array('class' => 'pagination-link');
$config['page_query_string'] = TRUE;
$this->pagination->initialize($config);
$book_list = $this->Books_model->list_books();
$genre_list= $this->Books_model->list_genres();
$author_list= $this->Books_model->list_authors();
$view_data = array(
"book_list" => $book_list,
"genre_list" => $genre_list,
"author_list" => $author_list
);
$this->db->get('books', $config['per_page'], $this->uri->segment(3));
$start = isset($_GET['start']) ? $_GET['start'] : 0;
$book_list = $this->Books_model->list_books($start, $config['per_page']);
$this->load->view("book_list",$view_data);
$this->load->library('pagination');
$this->load->library('table');
}
Model:
public function list_books($limit = FALSE, $offset = FALSE){
if($limit)
{
$this->db->limit($offset, $limit);
}
$list=$this->db->get("books")->result();
return $list;
}
View:
<?php echo $this->pagination->create_links(); ?>
I'd be so happy if you could help and thanks in advance

Answer 1

You can't use base_url() function as a base_url for pagination unless this index function belongs to your default site controller.
Instead change your line to this:
$config['base_url'] = site_url('controller/method/');
Also the reason your data isn't limited is because you're sending start parameter as false to model
It should be:
$data['records'] = $this->Books_model->list_books($this->uri->segment(3), $config['per_page'], $offset);
By looking at your code, the list of books being sent to the view file is stored in the $book_list variable, so in order to limit the number of books returned alter your line to this:
$start = isset($_GET['start']) ? $_GET['start'] : 0;
$book_list = $this->Books_model->list_books($start, $config['per_page']);
And add this you your pagination config array:
$config['page_query_string'] = TRUE;
And in your model function change this line:
$this->db->limit($limit, $offset);
To:
$this->db->limit($offset, $limit);
as stated in the CI documentation
$this->db->limit(10, 20); // Produces: LIMIT 20, 10 (in MySQL. Other databases have slightly different syntax)
Check here for more reference CI Limiting
Also as a side note, by looking at your code the $query and $data['records'] variables are assigned values but are never used or passed to the view file, so they don't do anything
This is how an index method in your controller should look like now:
Controller:
public function index($offset=0){
$config['base_url'] = site_url('books/index');
//$config['total_rows'] = 200;
$config['total_rows'] = $this->db->get('books')->num_rows();
$config['per_page'] = 1;
$config['uri_segment']= 3;
$config['attributes'] = array('class' => 'pagination-link');
$config['page_query_string'] = TRUE;
$this->pagination->initialize($config);
$start = isset($_GET['start']) ? $_GET['start'] : 0;
$book_list = $this->Books_model->list_books($start, $config['per_page']);
$genre_list= $this->Books_model->list_genres();
$author_list= $this->Books_model->list_authors();
$view_data = array(
"book_list" => $book_list,
"genre_list" => $genre_list,
"author_list" => $author_list
);
$this->load->view("book_list",$view_data);
$this->load->library('pagination');
$this->load->library('table');
}
Model:
public function list_books($limit = FALSE, $offset = FALSE){
if($limit !== FALSE)
{
$this->db->limit($offset, $limit);
}
$list=$this->db->get("books")->result();
return $list;
}

Answer 2

$config['base_url'] = 'http://example.com/controller/index/page/'
Try to add index as method name config['base_url]. so that whenever your pagination url created it contains method name.
this happens due to index method call automatically i.e. we don't need to mention method name but in pagination url we have to pass offset parameter we must have to use full url.