【问题标题】:CodeIgniter Search Results PaginationCodeIgniter 搜索结果分页
【发布时间】:2014-03-26 18:20:18
【问题描述】:

好吧,我已经四处搜索,但仍然找不到解决问题的方法。我还是 php 和 codeigniter 的新手,所以也许我已经错过了答案,但无论如何,这就是我想要做的。

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);

}

}

这是我的观点 (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一个结果数组。

<?php

M_search 类扩展 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();
    }

}

}

现在我的问题是保留分页的结果。

第一页很好,但是每当我点击页面链接时,表格上的结果会显示整个数据库,并且不限于我的搜索结果。

我在某处读到我需要使用会话来保留我的 search_term,以便在我切换页面时它可以工作,但我不知道该放在哪里。 任何意见或建议将不胜感激。谢谢。

【问题讨论】:

  • 我使用 ajax + jQuery 数据表。对我来说似乎更容易,也许它对你有用? [链接]datatables.net

标签: php codeigniter search pagination


【解决方案1】:

根据您的需要,有几种不同的方法可以处理搜索和分页。根据您现有的代码,这就是我要做的。

改变

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

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

【讨论】:

  • 谢谢。我会尝试一下。希望这能解决我的问题^^
  • @user3348358 是否解决了您遇到的问题
【解决方案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();

} 

}

只是想减少您的模型代码,如果您不想使用“会话”并且想要复制、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。

【讨论】:

    【解决方案3】:

    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,您可以取消注释以下 2 行。

    //$getData = array('s'=>$search);
    
    //$config['suffix'] = '?'.http_build_query($getData,'',"&amp;");
    
    $this->pagination->initialize($config);
    

    【讨论】:

      【解决方案4】:

      在你的Controller中尝试这种方式,

          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,'',"&amp;");
                  $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'] = '&nbsp;<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();
                          $result["links"] = explode('&nbsp;',$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/");
          }
      }   
      

      【讨论】:

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