【发布时间】：2014-01-21 10:43:45
【问题描述】：
我想在 CodeignIter 分页中添加一个下拉菜单，以便用户可以自己选择每页的项目。
但$config['per_page'] 的值没有改变。在我点击第 2 页后，会考虑默认值。
任何帮助我怎么能做到这一点。将来我还想在这个网格中添加搜索和按名称排序。所以解决方案应该是合适的。
这是我的文件。
控制器：
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
class products extends CI_Controller {
public $ipp = 5;
/**
* Index Page for this controller.
*
* Maps to the following URL
* http://example.com/index.php/welcome
* - or -
* http://example.com/index.php/welcome/index
* - or -
* Since this controller is set as the default controller in
* config/routes.php, it's displayed at http://example.com/
*
* So any other public methods not prefixed with an underscore will
* map to /index.php/welcome/<method_name>
* @see http://codeigniter.com/user_guide/general/urls.html
*/
public function __construct(){
parent::__construct();
/*if(!$this->session->userdata('user_id')){
redirect(base_url('login'));exit;
}*/
$this->load->model('productmodel');
// $this->load->model(array('usermodel','categorymodel'));
}
public function index()
{
$config['base_url'] = BASE_URL('products/index');
$config['total_rows'] = $this->db->count_all_results('products');
echo $this->ipp;
if($this->input->post('sel') != ''){
$this->ipp = $this->input->post('sel');
$config['per_page'] = $this->input->post('sel');
$this->pagination->initialize($config);
}else{
$config['per_page'] = $this->ipp;
$this->pagination->initialize($config);
}
$start = end($this->uri->segments);
$end = $config['per_page'];
//$start = 0;
if($start == '' || $start == 1){
$start = 0;
}
$this->pagination->initialize($config);
$data['product_data'] = $this->productmodel->getAllProducts($end, $start);
//$data['categories'] = $this->cateogorymodel->getAllCategories();
//echo '<pre>'; print_r($data);
if($this->session->userdata('username') && $this->session->userdata('password')){
$this->load->view('admin/products/manage', $data);
}else{
$this->load->view('admin/login');
}
}
public function add(){
$this->load->view('admin/products/add');
}
public function edit($product_id){
$row = $this->productmodel->getProductInfo($product_id);
//var_dump($row->product_id);
$data['product_id'] = $row->product_id;
$data['product_name'] = $row->product_name;
$data['product_details'] = $row->product_details;
$data['product_price'] = $row->product_price;
$this->load->view('admin/products/add', $data);
}
public function save(){
$this->load->library('form_validation');
$this->form_validation->set_rules('product_name', 'Product Name', 'trim|required');
$this->form_validation->set_rules('product_details', 'Product Details', 'trim|required');
$this->form_validation->set_rules('product_price', 'Product Price', 'trim|required');
if ($this->form_validation->run() == FALSE)
{
$this->load->view('admin/products/add');
}
else
{
$product_id = $this->input->post('product_id');
$data['product_name'] = $_POST['product_name'];
$data['product_details'] = $_POST['product_details'];
$data['product_price'] = $_POST['product_price'];
if($product_id == 0){
//Add
$this->db->insert('products', $data);
}else{
//Edit
$this->db->where('product_id', $product_id);
$this->db->update('products', $data);
}
redirect(BASE_URL('products'));
}
}
public function delete($product_id){
$data['product_id'] = $product_id;
$this->db->delete('products',$data);
redirect(BASE_URL('products'));
}
}
/* End of file welcome.php */
/* Location: ./application/controllers/welcome.php */
查看：
<?php $this->load->view('header'); ?>
<a href="<?php echo BASE_URL('user/logout'); ?>">Logout</a><br>
<a href="<?php echo BASE_URL('products/add'); ?>">Add New Product</a>
<?php
echo form_open(BASE_URL('products/index'));
$options = array(
'' => 'Select',
'2' => '2',
'50' => '50',
'100' => '100');
echo form_dropdown('sel',$options,'');
echo form_submit('submit','Submit');
?>
<table border="3">
<tr>
<td>
Product ID
</td>
<td>
Product Name
</td>
<td>
Product Detail
</td>
<td>
Product Price
</td>
<td>
Actions
</td>
</tr>
<?php
for($i = 0;$i<count($product_data);$i++){
?>
<tr>
<td>
<?php echo $product_data[$i]['product_id']; ?>
</td>
<td>
<?php echo $product_data[$i]['product_name']; ?>
</td>
<td>
<?php echo $product_data[$i]['product_details']; ?>
</td>
<td>
<?php echo $product_data[$i]['product_price']; ?>
</td>
<td>
<a href="<?php echo BASE_URL('products/edit/'.$product_data[$i]['product_id']); ?>">Edit</a>
<a href="<?php echo BASE_URL('products/delete/'.$product_data[$i]['product_id']); ?>">Delete</a>
</td>
</tr>
<?php
}
?>
</table>
<?php echo $this->pagination->create_links(); ?>
<?php $this->load->view('footer'); ?>
型号：
<?php
class productmodel extends CI_Model {
var $title = '';
var $content = '';
var $date = '';
function __construct()
{
// Call the Model constructor
parent::__construct();
}
function getAllProducts($limit = '',$start = '')
{
if($limit != '' && $start != '' && $start != 0){
$this->db->limit($limit, $start);
}else if($limit != '' && $start == 0){
$this->db->limit($limit);
}
$result = $this->db->get('products');
$data = $result->result_array();
return $data;
}
function getProductInfo($product_id)
{
$result = $this->db->query('SELECT * FROM products WHERE product_id='.$product_id);
$row = $result->row();
return $row;
}
}
?>
【问题讨论】：
-
首先检查 $this->ipp 的值是否在选择下拉列表时是否更改，然后检查 getAllProducts 方法及其参数限制并启动
-
我已经检查了值不要留在 $config['per_page'] 中...但是 $this->ipp 的值发生了变化...当我转到任何其他页面时会出现问题.. . 然后显示默认行数！！！
-
我写了关于 Codeigniter 分页的教程。 cloudways.com/blog/pagination-in-codeigniter。看看并提出您的建议
标签： php codeigniter pagination