CodeIgniter搜索结果分页

Question

我到处找了又找，但还是找不到解决问题的办法。我还不熟悉php和codeigniter，所以可能我已经错过了答案，但不管怎样，下面是我要做的。

这是我的控制器（c_index.php）-调用搜索函数并对结果数组执行分页。

<?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);

}

}

这是我的视图（index.php）-基本上只是显示分页结果

<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>

我的模型（m_search.php）-基本上搜索数据库并返回结果数组。

<?php

类M_搜索扩展了CI_模型{

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();
    }

}

}

现在我的问题是保留分页的结果。

第一个页面很好，但每当我单击页面链接时，表上的结果都会显示整个数据库，并且不限于我的搜索结果。

我在某个地方读到过，我需要使用会话来保持我的search_term，这样当我切换页面时它就可以工作，但我不知道把它放在哪里。任何意见或建议将不胜感激。谢谢。

Answer 1

您可以在控制器中使用以下代码，所有查询字符串都将显示在分页链接中。

$config['reuse_query_string']=TRUE;

对于分页链接中的其他参数，可以在下面两行中取消注释。

//$getData = array('s'=>$search);

//$config['suffix'] = '?'.http_build_query($getData,'',"&");

$this->pagination->initialize($config);

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();

} 

}

只是为了减少模型代码，如果您不想使用“会话”并希望复制、粘贴链接/url并在搜索中获得相同的结果，那么您应该在控制器中使用uri类。

Answer 3

根据您的需要，有几种不同的方法来处理搜索和分页。基于你现有的代码，这就是我要做的。

改变

$search_term = $this->input->post('word');

到

$search_term = ''; // default when no term in session or POST
if ($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');
}