我正在使用WP_List_Table来创建自定义插件。我正在使用从其他源复制的代码，一切正常，除非根据ID列或订单号列对表进行排序，这是在我的SQL数据库中定义的“int”。
这是继承WP_List_Table的类代码类：
<?php
if(!class_exists('WP_List_Table')){
require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}
class TT_Example_List_Table extends WP_List_Table {
function __construct(){
global $status, $page;
//Set parent defaults
parent::__construct( array(
'singular' => 'movie', //singular name of the listed records
'plural' => 'movies', //plural name of the listed records
'ajax' => false //does this table support ajax?
) );
}
function column_default($item, $column_name){
switch($column_name){
case 'id':
case 'name_english':
case 'name_arabic':
case 'ordering_number':
return $item[$column_name];
default:
return print_r($item,true); //Show the whole array for troubleshooting purposes
}
}
function column_id($item){
//Build row actions
$actions = array(
'edit' => sprintf('<a href="?page=%s&action=%s&movie=%s">Edit</a>',$_REQUEST['page'],'edit',$item['id']),
'delete' => sprintf('<a href="?page=%s&action=%s&movie=%s">Delete</a>',$_REQUEST['page'],'delete',$item['id']),
);
//Return the title contents
return sprintf('%1$s <span style="color:silver">%2$s</span>%3$s',
/*$1%s*/ $item['id'],
/*$2%s*/ $item['ID'],
/*$3%s*/ $this->row_actions($actions)
);
}
function column_cb($item){
return sprintf(
'<input type="checkbox" name="%1$s[]" value="%2$s" />',
/*$1%s*/ $this->_args['singular'], //Let's simply repurpose the table's singular label ("movie")
/*$2%s*/ $item['id'] //The value of the checkbox should be the record's id
);
}
function get_columns(){
$columns = array(
'cb' => '<input type="checkbox" />', //Render a checkbox instead of text
'id' => 'ID',
'name_english' => 'English Name',
'name_arabic' => 'Arabic Name',
'ordering_number' => 'Order Number'
);
return $columns;
}
function get_sortable_columns() {
$sortable_columns = array(
'id' => array('id',true), //true means it's already sorted
'name_english' => array('name_english',true),
'name_arabic' => array('name_arabic',true),
'ordering_number' => array('ordering_number',true)
);
return $sortable_columns;
}
function get_bulk_actions() {
$actions = array(
'delete' => 'Delete'
);
return $actions;
}
function process_bulk_action() {
//Detect when a delete action is being triggered...
if( 'delete'===$this->current_action() ) {
if( is_array ($_GET['movie'])) {
foreach ($_GET['movie'] as $value) {
global $wpdb;
$wpdb->query($wpdb->prepare ("DELETE FROM " .$GLOBALS['categoriestables']. " WHERE id = " .$value));
if (file_exists(plugin_dir_path( __FILE__ ) . 'appfiles/images/categories/' . $value . '.jpg' )) {
unlink(plugin_dir_path( __FILE__ ) . 'appfiles/images/categories/' . $value . '.jpg');
}
}
echo '<div class="updated"> <p>Many Categories have been deleted.</p></div>';
} else{
global $wpdb;
$wpdb->query($wpdb->prepare ("DELETE FROM " .$GLOBALS['categoriestables']. " WHERE id = " .$_GET['movie']));
if (file_exists(plugin_dir_path( __FILE__ ) . 'appfiles/images/categories/' . $_GET['movie'] . '.jpg' )) {
unlink(plugin_dir_path( __FILE__ ) . 'appfiles/images/categories/' . $_GET['movie'] . '.jpg');
}
echo '<div class="updated"> <p>One Category has been deleted.</p></div>';
}
}
//Detect when a edit action is being triggered...
if( 'edit'===$this->current_action() ) {
global $wpdb;
$english_name = $wpdb->get_var( $wpdb->prepare("select name_english from " .$GLOBALS['categoriestables']. " where id= " .$_GET['movie']) );
$arabic_name = $wpdb->get_var( $wpdb->prepare("select name_arabic from " .$GLOBALS['categoriestables']. " where id= " .$_GET['movie']) );
$order_number = $wpdb->get_var( $wpdb->prepare("select ordering_number from " .$GLOBALS['categoriestables']. " where id= " .$_GET['movie']) );
echo "<h1> Edit Category </h1><br><br><br><br><br>"; ?>
<form class="cp-club-form" method="POST" enctype="multipart/form-data" action="<?PHP echo admin_url( 'admin.php?page=categories-tropicana-plugin&action=editing' ); ?>">
<table style="width:50%">
<tr> <td>Category ID:</td> <td><input name="editID" type="text" value='<?PHP echo $_GET['movie']; ?>' readonly> </td> <td> Do not Touch</td></tr>
<tr> <td>English Name:</td> <td><input name="english_name" type="text" value='<?PHP echo $english_name; ?>'> </td> <td> First Language</td></tr>
<tr> <td>Arabic Name:</td> <td><input name="arabic_name" type="text" value='<?PHP echo $arabic_name; ?>'> </td><td> Second Language</td></tr>
<tr> <td>Order Number:</td> <td><input name="order_number" type="number" value='<?PHP echo $order_number; ?>'> </td><td> Its Order in appearance in the mobile app</td></tr>
<tr><td>Assigned Image</td><td> <img src="<?php echo plugins_url(); ?>/tropicana-delivery/appfiles/images/categories/<?php echo $_GET['movie'] ?>.jpg" alt="Category Image" style="width:150px;"> </td><td>Best Dimensions: </td></tr>
<tr> <td></td><td><input type="file" name="file" id="file"></td><td> <input type="submit" name="submitediting" value='Save'> </td>
</table>
</form>
<?php
wpdie();
}
// Detect if editing is saved & done
if ('editing'===$this->current_action()) {
if(isset($_POST['submitediting'])) {
if ($_FILES['file']['size'] != 0) {
// Check filetype
if($_FILES['file']['type'] != 'image/jpeg'){
die('Unsupported filetype uploaded. Only JPEG is allowed for Mobile Technical Reasons');
}
// Upload file
if(!move_uploaded_file($_FILES['file']['tmp_name'], plugin_dir_path( __FILE__ ) . 'appfiles/images/categories/' . $_POST['editID'] . '.jpg')){
die('Error uploading file - check destination is writeable.!!!');
}
}
global $wpdb;
$wpdb->query($wpdb->prepare ("UPDATE " .$GLOBALS['categoriestables']. " SET name_english= '".$_POST['english_name']."', name_arabic = '". $_POST['arabic_name']."', ordering_number= ".$_POST['order_number']." WHERE id = " .$_POST['editID']));
echo '<div class="updated"> <p>Edited Successfully</p></div>';
}}
// If Add new Button is Pressed
if ('new'===$this->current_action()) {
echo "<h1> Add New Category </h1><br><br><br><br><br>"; ?>
<form class="cp-club-form" method="POST" enctype="multipart/form-data" action="<?PHP echo admin_url( 'admin.php?page=categories-tropicana-plugin&action=newadded' ); ?>">
<table style="width:50%">
<tr> <td>Category ID:</td> <td><input name="editID" type="text" value='Automatic' readonly> </td> <td> Do not Touch</td></tr>
<tr> <td>English Name:</td> <td><input name="english_name" type="text" value=''> </td> <td> First Language</td></tr>
<tr> <td>Arabic Name:</td> <td><input name="arabic_name" type="text" value=''> </td><td> Second Language</td></tr>
<tr> <td>Order Number:</td> <td><input name="order_number" type="number" value=''> </td><td> Its Order in appearance in the mobile app</td></tr>
<tr><td>Assigned Image</td><td> </td><td>Best Dimensions: </td></tr>
<tr> <td></td><td><input type="file" name="filenew" id="file"></td><td> <input type="submit" name="submitnew" value='Save'> </td>
</table>
</form>
<?php
wpdie();
}
// Handling New Category insert
if ('newadded'===$this->current_action()) {
if(isset($_POST['submitnew'])) {
global $wpdb;
$wpdb->query($wpdb->prepare ("INSERT INTO " .$GLOBALS['categoriestables']. " (name_english,name_arabic,ordering_number) VALUES ( '".$_POST['english_name']."', '".$_POST['arabic_name']."', ".$_POST['order_number'].")"));
if ($_FILES['filenew']['size'] != 0) {
// Check filetype
if($_FILES['filenew']['type'] != 'image/jpeg'){
die('Unsupported filetype uploaded. Only JPEG is allowed for Mobile Technical Reasons');
}
// Upload file
if(!move_uploaded_file($_FILES['filenew']['tmp_name'], plugin_dir_path( __FILE__ ) . 'appfiles/images/categories/' . $wpdb->insert_id . '.jpg')){
die('Error uploading file - check destination is writeable.!!!');
}
}
echo '<div class="updated"> <p>Added Successfully</p></div>';
}}
}
function prepare_items() {
global $wpdb; //This is used only if making any database queries
$per_page = 10;
$columns = $this->get_columns();
$hidden = array();
$sortable = $this->get_sortable_columns();
$this->_column_headers = array($columns, $hidden, $sortable);
$this->process_bulk_action();
global $wpdb;
$data = $wpdb->get_results( "SELECT * FROM " .$GLOBALS['categoriestables'], ARRAY_A);
if( isset($_GET['s']) ){ echo $_GET['s'];
$data = $wpdb->get_results( "SELECT * FROM " .$GLOBALS['categoriestables']. " WHERE name_english LIKE '%".$_GET['s']."%' OR name_arabic LIKE '%".$_GET['s']."%'" , ARRAY_A);
}
function usort_reorder($a,$b){
$orderby = (!empty($_REQUEST['orderby'])) ? $_REQUEST['orderby'] : 'id'; //If no sort, default to title
$order = (!empty($_REQUEST['order'])) ? $_REQUEST['order'] : 'asc'; //If no order, default to asc
$result = strcmp($a[$orderby], $b[$orderby]); //Determine sort order
return ($order==='asc') ? $result : -$result; //Send final sort direction to usort
}
usort($data, 'usort_reorder');
$current_page = $this->get_pagenum();
$total_items = count($data);
$data = array_slice($data,(($current_page-1)*$per_page),$per_page);
$this->items = $data;
$this->set_pagination_args( array(
'total_items' => $total_items, //WE have to calculate the total number of items
'per_page' => $per_page, //WE have to determine how many items to show on a page
'total_pages' => ceil($total_items/$per_page) //WE have to calculate the total number of pages
) );
}
}
以下是我们如何使用此类
//Create an instance of our package class...
$testListTable = new TT_Example_List_Table();
//Fetch, prepare, sort, and filter our data...
$testListTable->prepare_items();
?>
<div class="wrap">
<!-- Forms are NOT created automatically, so you need to wrap the table in one to use features like bulk actions -->
<form id="movies-filter" method="get">
<div id="icon-users" class="icon32"></div>
<h2>Manage Your App Categories <a href="<?PHP echo admin_url( 'admin.php?page=categories-tropicana-plugin&action=new' ); ?>" class="add-new-h2"><?php echo esc_html_x('Add New', 'link'); ?></a></h2>
<!-- For plugins, we also need to ensure that the form posts back to our current page -->
<input type="hidden" name="page" value="<?php echo $_REQUEST['page'] ?>" />
<?php $testListTable->search_box('Search Table', 'your-element-id'); ?>
<!-- Now we can render the completed list table -->
<?php $testListTable->display() ?>
</form>
</div>
<?php
但是当我点击ID时，我会以这种方式排序行
1 10 11 12 13 2 21 ..等等。
我该如何解决这个问题？
答案 0 :(得分：4)
我找到了解决方案。只需在函数usort_reorder中用strnatcmp替换strcmp
function usort_reorder($a,$b){
$orderby = (!empty($_REQUEST['orderby'])) ? $_REQUEST['orderby'] : 'id'; //If no sort, default to title
$order = (!empty($_REQUEST['order'])) ? $_REQUEST['order'] : 'asc'; //If no order, default to asc
$result = strnatcmp($a[$orderby], $b[$orderby]); //Determine sort order
return ($order==='asc') ? $result : -$result; //Send final sort direction to usort
}