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我的插件代碼如下，我有一個數據庫中的圖像列無法顯示數據庫中的圖像作爲表記錄中的縮略圖。Worpdress無法顯示數據庫中的圖像列wp_list_table
我應該怎麼做，任何人都可以幫助我。
如果您需要任何其他細節，您肯定會問，我會提供。
在此先感謝。
<?php
/*
Plugin Name: form-test-1
Author: Ari Parker
*/
if (!class_exists('WP_List_Table')) {
require_once(ABSPATH . 'wp-admin/includes/class-wp-list-table.php');
}
/**
* Custom_Table_Example_List_Table class that will display our custom table
* records in nice table
*/
class CC_Custom_Table_Example_List_Table extends WP_List_Table
{
/**
* [REQUIRED] You must declare constructor and give some basic params
*/
function __construct()
{
global $status, $page;
parent::__construct(array(
'singular' => 'person',
'plural' => 'persons',
));
}
/**
* [REQUIRED] this is a default column renderer
*
* @param $item - row (key, value array)
* @param $column_name - string (key)
* @return HTML
*/
function column_default($item, $column_name)
{
return $item[$column_name];
}
/**
* [OPTIONAL] this is example, how to render specific column
*
* method name must be like this: "column_[column_name]"
*
* @param $item - row (key, value array)
* @return HTML
*/
function column_age($item)
{
return '<em>' . $item['age'] . '</em>';
}
/**
* [OPTIONAL] this is example, how to render column with actions,
* when you hover row "Edit | Delete" links showed
*
* @param $item - row (key, value array)
* @return HTML
*/
function column_name($item)
{
// links going to /admin.php?page=[your_plugin_page][&other_params]
// notice how we used $_REQUEST['page'], so action will be done on curren page
// also notice how we use $this->_args['singular'] so in this example it will
// be something like &person=2
$actions = array(
'edit' => sprintf('<a href="?page=persons_form&id=%s">%s</a>', $item['id'], __('Edit', 'custom_table_example')),
'delete' => sprintf('<a href="?page=%s&action=delete&id=%s">%s</a>', $_REQUEST['page'], $item['id'], __('Delete', 'custom_table_example')),
);
return sprintf('%s %s',
$item['name'],
$this->row_actions($actions)
);
}
/**
* [REQUIRED] this is how checkbox column renders
*
* @param $item - row (key, value array)
* @return HTML
*/
function column_cb($item)
{
return sprintf(
'<input type="checkbox" name="id[]" value="%s" />',
$item['id']
);
}
/**
* [REQUIRED] This method return columns to display in table
* you can skip columns that you do not want to show
* like content, or description
*
* @return array
*/
function get_columns()
{
$columns = array(
'cb' => '<input type="checkbox" />', //Render a checkbox instead of text
'name' => __('Name', 'custom_table_example'),
'email' => __('E-Mail', 'custom_table_example'),
\t 'country' => __('Country', 'custom_table_example'),
\t 'photo1_subject' => __('Photo Subject', 'custom_table_example'),
\t 'about_yourself' => __('Description', 'custom_table_example'),
\t 'create_on' => __('Created On', 'custom_table_example'),
\t
\t
\t
\t
);
return $columns;
}
/**
* [OPTIONAL] This method return columns that may be used to sort table
* all strings in array - is column names
* notice that true on name column means that its default sort
*
* @return array
*/
function get_sortable_columns()
{
$sortable_columns = array(
'name' => array('name', true),
'email' => array('email', false),
\t 'country' => array('country', false),
\t 'photo1_subject' => array('photo1_subject', false),
\t 'about_yourself' => array('about_yourself', false),
\t 'create_on' => array('create_on', false),
\t
\t
);
return $sortable_columns;
}
/**
* [OPTIONAL] Return array of bult actions if has any
*
* @return array
*/
function get_bulk_actions()
{
$actions = array(
'delete' => 'Delete'
);
return $actions;
}
/**
* [OPTIONAL] This method processes bulk actions
* it can be outside of class
* it can not use wp_redirect coz there is output already
* in this example we are processing delete action
* message about successful deletion will be shown on page in next part
*/
function process_bulk_action()
{
global $wpdb;
$table_name = $wpdb->prefix . 'form_test_1'; // do not forget about tables prefix
if ('delete' === $this->current_action()) {
$ids = isset($_REQUEST['id']) ? $_REQUEST['id'] : array();
if (is_array($ids)) $ids = implode(',', $ids);
if (!empty($ids)) {
$wpdb->query("DELETE FROM $table_name WHERE id IN($ids)");
}
}
}
/**
* [REQUIRED] This is the most important method
*
* It will get rows from database and prepare them to be showed in table
*/
function prepare_items()
{
global $wpdb;
$table_name = $wpdb->prefix . 'form_test_1'; // do not forget about tables prefix
$per_page = 20; // constant, how much records will be shown per page
$columns = $this->get_columns();
$hidden = array();
$sortable = $this->get_sortable_columns();
// here we configure table headers, defined in our methods
$this->_column_headers = array($columns, $hidden, $sortable);
// [OPTIONAL] process bulk action if any
$this->process_bulk_action();
// will be used in pagination settings
$total_items = $wpdb->get_var("SELECT COUNT(id) FROM $table_name");
// prepare query params, as usual current page, order by and order direction
$paged = isset($_REQUEST['paged']) ? max(0, intval($_REQUEST['paged']) - 1) : 0;
$orderby = (isset($_REQUEST['orderby']) && in_array($_REQUEST['orderby'], array_keys($this->get_sortable_columns()))) ? $_REQUEST['orderby'] : 'name';
$order = (isset($_REQUEST['order']) && in_array($_REQUEST['order'], array('asc', 'desc'))) ? $_REQUEST['order'] : 'asc';
// [REQUIRED] define $items array
// notice that last argument is ARRAY_A, so we will retrieve array
$this->items = $wpdb->get_results($wpdb->prepare("SELECT * FROM $table_name ORDER BY $orderby $order LIMIT %d OFFSET %d", $per_page, $paged), ARRAY_A);
// [REQUIRED] configure pagination
$this->set_pagination_args(array(
'total_items' => $total_items, // total items defined above
'per_page' => $per_page, // per page constant defined at top of method
'total_pages' => ceil($total_items/$per_page) // calculate pages count
));
}
}
/**
* PART 3. Admin page
* ============================================================================
*
* In this part you are going to add admin page for custom table
*
* http://codex.wordpress.org/Administration_Menus
*/
/**
* admin_menu hook implementation, will add pages to list persons_2 and to add new one
*/
function custom_table_example_admin_menu_2()
{
add_menu_page(__('Lomo Form Test 1 Users', 'custom_table_example'), __('Lomo Form Test 1 Users', 'custom_table_example'), 'activate_plugins', 'persons_2', 'custom_table_example_persons_page_handler_2');
//add_submenu_page('persons_2', __('View List', 'custom_table_example'), __('View List', 'custom_table_example'), 'activate_plugins', 'persons_2', 'custom_table_example_persons_page_handler_2');
// add new will be described in next part
//add_submenu_page('persons_2', __('Add new', 'custom_table_example'), __('Add new', 'custom_table_example'), 'activate_plugins', 'persons_form', 'custom_table_example_persons_form_page_handler_2');
}
add_action('admin_menu', 'custom_table_example_admin_menu_2');
/**
* List page handler
*
* This function renders our custom table
* Notice how we display message about successfull deletion
* Actualy this is very easy, and you can add as many features
* as you want.
*
* Look into /wp-admin/includes/class-wp-*-list-table.php for examples
*/
function custom_table_example_persons_page_handler_2()
{
global $wpdb;
$table = new CC_Custom_Table_Example_List_Table();
$table->prepare_items();
$message = '';
if ('delete' === $table->current_action()) {
$message = '<div class="updated below-h2" id="message"><p>' . sprintf(__('Items deleted: %d', 'custom_table_example'), count($_REQUEST['id'])) . '</p></div>';
}
?>
<div class="wrap">
<div class="icon32 icon32-posts-post" id="icon-edit"><br></div>
<h2><?php _e('Lomo Form Test 1 Users', 'custom_table_example')?> <a class="add-new-h2"
href="<?php echo get_admin_url(get_current_blog_id(), 'admin.php?page=persons_form');?>"><?php _e('Add new', 'custom_table_example')?></a>
</h2>
<?php echo $message; ?>
<form id="persons_2-table" method="GET">
<input type="hidden" name="page" value="<?php echo $_REQUEST['page'] ?>"/>
<?php $table->display() ?>
</form>
</div>
<?php
}
/**
* PART 4. Form for adding andor editing row
* ============================================================================
*
* In this part you are going to add admin page for adding andor editing items
* You cant put all form into this function, but in this example form will
* be placed into meta box, and if you want you can split your form into
* as many meta boxes as you want
*
* http://codex.wordpress.org/Data_Validation
* http://codex.wordpress.org/Function_Reference/selected
*/
/**
* Form page handler checks is there some data posted and tries to save it
* Also it renders basic wrapper in which we are callin meta box render
*/
function custom_table_example_persons_form_page_handler_2()
{
global $wpdb;
$table_name = $wpdb->prefix . 'cte'; // do not forget about tables prefix
$message = '';
$notice = '';
// this is default $item which will be used for new records
$default = array(
'id' => 0,
'name' => '',
'email' => '',
'age' => null,
);
// here we are verifying does this request is post back and have correct nonce
if (wp_verify_nonce($_REQUEST['nonce'], basename(__FILE__))) {
// combine our default item with request params
$item = shortcode_atts($default, $_REQUEST);
// validate data, and if all ok save item to database
// if id is zero insert otherwise update
$item_valid = custom_table_example_validate_person_2($item);
if ($item_valid === true) {
if ($item['id'] == 0) {
$result = $wpdb->insert($table_name, $item);
$item['id'] = $wpdb->insert_id;
if ($result) {
$message = __('Item was successfully saved', 'custom_table_example');
} else {
$notice = __('There was an error while saving item', 'custom_table_example');
}
} else {
$result = $wpdb->update($table_name, $item, array('id' => $item['id']));
if ($result) {
$message = __('Item was successfully updated', 'custom_table_example');
} else {
$notice = __('There was an error while updating item', 'custom_table_example');
}
}
} else {
// if $item_valid not true it contains error message(s)
$notice = $item_valid;
}
}
else {
// if this is not post back we load item to edit or give new one to create
$item = $default;
if (isset($_REQUEST['id'])) {
$item = $wpdb->get_row($wpdb->prepare("SELECT * FROM $table_name WHERE id = %d", $_REQUEST['id']), ARRAY_A);
if (!$item) {
$item = $default;
$notice = __('Item not found', 'custom_table_example');
}
}
}
// here we adding our custom meta box
add_meta_box('persons_form_meta_box', 'Person data', 'custom_table_example_persons_form_meta_box_handler_2', 'person', 'normal', 'default');
?>
<div class="wrap">
<div class="icon32 icon32-posts-post" id="icon-edit"><br></div>
<h2><?php _e('Person', 'custom_table_example')?> <a class="add-new-h2"
href="<?php echo get_admin_url(get_current_blog_id(), 'admin.php?page=persons_2');?>"><?php _e('back to list', 'custom_table_example')?></a>
</h2>
<?php if (!empty($notice)): ?>
<div id="notice" class="error"><p><?php echo $notice ?></p></div>
<?php endif;?>
<?php if (!empty($message)): ?>
<div id="message" class="updated"><p><?php echo $message ?></p></div>
<?php endif;?>
<form id="form" method="POST">
<input type="hidden" name="nonce" value="<?php echo wp_create_nonce(basename(__FILE__))?>"/>
<?php /* NOTICE: here we storing id to determine will be item added or updated */ ?>
<input type="hidden" name="id" value="<?php echo $item['id'] ?>"/>
<div class="metabox-holder" id="poststuff">
<div id="post-body">
<div id="post-body-content">
<?php /* And here we call our custom meta box */ ?>
<?php do_meta_boxes('person', 'normal', $item); ?>
<input type="submit" value="<?php _e('Save', 'custom_table_example')?>" id="submit" class="button-primary" name="submit">
</div>
</div>
</div>
</form>
</div>
<?php
}
/**
* This function renders our custom meta box
* $item is row
*
* @param $item
*/
function custom_table_example_persons_form_meta_box_handler_2($item)
{
?>
<table cellspacing="2" cellpadding="5" style="width: 100%;" class="form-table">
<tbody>
<tr class="form-field">
<th valign="top" scope="row">
<label for="name"><?php _e('Name', 'custom_table_example')?></label>
</th>
<td>
<input id="name" name="name" type="text" style="width: 95%" value="<?php echo esc_attr($item['name'])?>"
size="50" class="code" placeholder="<?php _e('Your name', 'custom_table_example')?>" required>
</td>
</tr>
<tr class="form-field">
<th valign="top" scope="row">
<label for="email"><?php _e('E-Mail', 'custom_table_example')?></label>
</th>
<td>
<input id="email" name="email" type="email" style="width: 95%" value="<?php echo esc_attr($item['email'])?>"
size="50" class="code" placeholder="<?php _e('Your E-Mail', 'custom_table_example')?>" required>
</td>
</tr>
<tr class="form-field">
<th valign="top" scope="row">
<label for="age"><?php _e('Age', 'custom_table_example')?></label>
</th>
<td>
<input id="age" name="age" type="number" style="width: 95%" value="<?php echo esc_attr($item['age'])?>"
size="50" class="code" placeholder="<?php _e('Your age', 'custom_table_example')?>" required>
</td>
</tr>
</tbody>
</table>
<?php
}
/**
* Simple function that validates data and retrieve bool on success
* and error message(s) on error
*
* @param $item
* @return bool|string
*/
function custom_table_example_validate_person_2($item)
{
$messages = array();
if (empty($item['name'])) $messages[] = __('Name is required', 'custom_table_example');
if (!empty($item['email']) && !is_email($item['email'])) $messages[] = __('E-Mail is in wrong format', 'custom_table_example');
if (!ctype_digit($item['age'])) $messages[] = __('Age in wrong format', 'custom_table_example');
//if(!empty($item['age']) && !absint(intval($item['age']))) $messages[] = __('Age can not be less than zero');
//if(!empty($item['age']) && !preg_match('/[0-9]+/', $item['age'])) $messages[] = __('Age must be number');
//...
if (empty($messages)) return true;
return implode('<br />', $messages);
}
/**
* Do not forget about translating your plugin, use __('english string', 'your_uniq_plugin_name') to retrieve translated string
* and _e('english string', 'your_uniq_plugin_name') to echo it
* in this example plugin your_uniq_plugin_name == custom_table_example
*
* to create translation file, use poedit FileNew catalog...
* Fill name of project, add "." to path (ENSURE that it was added - must be in list)
* and on last tab add "__" and "_e"
*
* Name your file like this: [my_plugin]-[ru_RU].po
*
* http://codex.wordpress.org/Writing_a_Plugin#Internationalizing_Your_Plugin
* http://codex.wordpress.org/I18n_for_WordPress_Developers
*/
function custom_table_example_languages_2()
{
load_plugin_textdomain('custom_table_example', false, dirname(plugin_basename(__FILE__)));
}
add_action('init', 'custom_table_example_languages_2');
是我加入了圖像的名字，但在類中添加此功能後做什麼。 – user2960749
謝謝你，你是偉大的，這就像我的魅力:) – user2960749