CodeIgniter Search Results Pagination - php

Question

Well I've searched and searched all around but I still can't find a solution to my problem. I'm still new to php and codeigniter so maybe I missed the answer already but anyways, here's what I'm trying to do.
This is my Controller (c_index.php) - calls a search function and performs pagination on the resulting array.
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class C_index extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->model('m_search');
$this->load->library("pagination");
$this->load->library("table");
}
/** Index Page for this controller */
public function index()
{
if($this->session->userdata('logged_in')){
$this->load->view('v_user');
}
else{
$this->load->view('index');
}
}
public function search()
{
// start of search
$search_term = $this->input->post('word');
$books = $this->m_search->search_books($search_term);
// start of pagination
$config['base_url'] = "http://localhost/test/index.php/c_index/search";
$config['per_page'] = 5;
$config['num_links'] = 7;
$config['total_rows'] = count($books);
echo $config['total_rows'];
$this->pagination->initialize($config);
$data['query'] = array_slice($books,$this->uri->segment(3),$config['per_page']);
$this->load->view("index",$data);
}
}
Here's my view (index.php) - basically just displays the pagination result
<h3> Search Results </h3>
<!-- table -->
<table class="table table-condensed table-hover table-striped" id="result_table">
<tbody>
<?php
if(isset ($query)){
if(count($query)!=0){
foreach($query as $item){
echo "<tr><td>". $item['title'] ." by " .$item['author'] ."<br/></td></tr>";
}
echo $this->pagination->create_links();
}
else
{
echo "No results found for keyword ' ". $this->input->post('word')." ' .";
}
}
else
{
echo "Start a search by typing on the Search Bar";
}
?>
</tbody>
</table>
My model (m_search.php) - basically searches the database and returns an array of results.
<?php
class M_search extends CI_Model{
function search_books($search_term='default')
{
$filter = $this->input->post('filter');
//echo $filter;
if($filter == 'title')
{
//echo 'title';
$this->db->select('*');
$this->db->from('book');
$this->db->like('title',$search_term);
// Execute the query.
$query = $this->db->get();
return $query->result_array();
}else if($filter == 'author')
{
//echo 'author';
$this->db->select('*');
$this->db->from('book');
$this->db->like('author',$search_term);
// Execute the query.
$query = $this->db->get();
return $query->result_array();
}else if($filter == 'type')
{
//echo 'type';
$this->db->select('*');
$this->db->from('book');
$this->db->like('book_type',$search_term);
// Execute the query.
$query = $this->db->get();
return $query->result_array();
}else if($filter == 'status')
{
//echo 'status';
$this->db->select('*');
$this->db->from('book');
$this->db->like('book_status',$search_term);
// Execute the query.
$query = $this->db->get();
return $query->result_array();
}else
{
//echo 'all';
$this->db->select('*');
$this->db->from('book');
$this->db->like('book_status',$search_term);
$this->db->or_like('book_type',$search_term);
$this->db->or_like('author',$search_term);
$this->db->or_like('title',$search_term);
// Execute the query.
$query = $this->db->get();
return $query->result_array();
}
}
}
Now my problem is keeping the results for the pagination.
The first page is fine but whenever I click on a page link, the results on the table show the whole database and is not limited to my search results.
I've read somewhere that I need to use sessions to keep my search_term so that it works when I switch pages but I don't know where to put it.
Any advice or suggestions would be greatly appreciated. Thanks.

Answer 1

There are several of different ways to handle search and pagination depending on your needs. Based on your existing code, this is what I would do.
Change
$search_term = $this->input->post('word');
to
$search_term = ''; // default when no term in session or POST
if ($this->input->post('word'))
{
// use the term from POST and set it to session
$search_term = $this->input->post('word');
$this->session->set_userdata('search_term', $search_term);
}
elseif ($this->session->userdata('search_term'))
{
// if term is not in POST use existing term from session
$search_term = $this->session->userdata('search_term');
}

Answer 2

function search_books($search_term='default')
{
$filter = $this->input->post('filter');
//echo $filter;
if($filter == 'title')
{
$this->db->like('title',$search_term);
}
else if($filter == 'author')
{
$this->db->like('author',$search_term);
}
else if($filter == 'type')
{
$this->db->like('book_type',$search_term);
}
else if($filter == 'status')
{
$this->db->like('book_status',$search_term);
}
else
{
$this->db->like('book_status',$search_term);
$this->db->or_like('book_type',$search_term);
$this->db->or_like('author',$search_term);
$this->db->or_like('title',$search_term);
// Execute the query.
}
$query = $this->db->get('book');
return $query->result_array();
}
}
Just trying to lessen your Model code, if you don't want to use "session" and want to copy, paste link/url and get same result in your search then you should use uri class in your controller.

Answer 3

you can use following code in your controller all query string will show in pagination links.
$config['reuse_query_string']=TRUE;
for additional parameters in paging link you can un comment following 2 lines.
//$getData = array('s'=>$search);
//$config['suffix'] = '?'.http_build_query($getData,'',"&");
$this->pagination->initialize($config);

Answer 4

Try in this way in your Controller,
public function search()
{
$result=array();
if($this->session->userdata('login_id')!='')
{
$q = trim($this->input->get('q'));
if(strlen($q)>0)
{
$config['enable_query_strings']=TRUE;
$getData = array('q'=>$q);
$config['base_url'] = base_url().'admin/Product/search/';
$config['suffix'] = '?'.http_build_query($getData,'',"&");
$config['first_url'] = $config['base_url'].'?q='.$q;
$config["per_page"] = 10;
$config['use_page_numbers'] = TRUE;
$total_row = $this->Prod_model->search_record_count($q);
$config['total_rows']=$total_row;
$config['num_links'] = $total_row;
$config['cur_tag_open'] = ' <a class="current">';
$config['cur_tag_close'] = '</a>';
$config['next_link'] = 'Next >';
$config['prev_link'] = '< Previous';
if($this->uri->segment(3))
{
$page = $this->uri->segment(3);
}
else
{
$page = 1;
}
$result['search'] = $this->Prod_model->search($q,$config["per_page"],$page);
if(empty($result['search']))
{
echo "no data found";die;
}
else
{
$this->pagination->initialize($config);
$str_links = $this->pagination->create_links();
$result["links"] = explode(' ',$str_links);
$id=$this->session->userdata('login_id');
$result['user']=$this->Home_model->user_details($id);
$this->template->load('prod_table',$result);
}
}
else
{
echo "empty string";die;
}
}
else
{
redirect(base_url()."admin/");
}
}