Because widget_name::__construct() calls WP_Widget::WP_Widget(), which in turn calls widget_name::__construct() etc. A simple solution would be to make widget_name::__construct() call WP_Widget::__construct() directly. Also see http://core.trac.wordpress.org/ticket/16768#comment:9
I wouldn’t use that hook. Here’s why Try something like this using admin_notices. function wpsites_admin_notice() { $screen = get_current_screen(); if( ‘post’ == $screen->post_type && ‘edit’ == $screen->base ){ ?> <div class=”error”> <p><?php _e( ‘Updated Demo Message!’, ‘wpsites’ ); ?></p> </div> <?php }} add_action( ‘admin_notices’, ‘wpsites_admin_notice’ ); Untested.
The issue if that your conditional is trying to convert an Object into things that it cannot be converted to. WP_Query returns a WP_Query Object so when it’s tested against Object == 0 – it tries to convert the object into a number during the comparison but cannot. You instead need to test against $results->have_posts() … Read more
This usually happens when you are trying to do admin navigation stuff and you aren’t hooked into admin_menu. If you hook in before that, $menu hasn’t been created yet. add_action(‘admin_menu’, ‘my_plugin_add_menu’); function my_plugin_add_menu(){ $ptype=”my_post_type”; $ptype_obj = get_post_type_object( $ptype ); add_submenu_page( ‘my-menu-item’, $ptype_obj->labels->name, $ptype_obj->labels->all_items, $ptype_obj->cap->edit_posts, “edit.php?post_type=$ptype” ); }
This is a bug (one that I’ve encountered before) and could do with a ticket in trac (since I never took the time to submit one!) The trouble starts with requests that set multiple is_* query flags as true (specifically flags that represent objects, such as single posts, pages, and post type & term archives). … Read more
There is a section that should look like this: defined( ‘ABSPATH’ ) || define( ‘ABSPATH’, __DIR__ . “https://wordpress.stackexchange.com/” ); require_once( ABSPATH . ‘wp-settings.php’ ); add_filter() is available after that, you are probably using it too early.
Since version 3.4 (or earlier?) WordPress sends a special HTTP header (not in HTML) on login and admin pages: X-Frame-Options: SAMEORIGIN So your browser will show you some text built into the browser, not sent from WordPress. From wp-includes/default-filters.php: add_action( ‘login_init’, ‘send_frame_options_header’, 10, 0 ); add_action( ‘admin_init’, ‘send_frame_options_header’, 10, 0 ); You could create a … Read more
You need to match the $priority you used to hook the action: remove_action( ‘save_post’, array( $this, ‘save_box’ ), 20 /* Same as add_action call */ ); http://codex.wordpress.org/Function_Reference/remove_action Make sure you take the $post_id argument in your save_box method too: function save_box( $post_id ) { … }
Registering custom posts is a plugin territory. It means that you need to remove them from the theme’s functionality and register them via a plugin (usually recommended when installing the theme using TGM Plugin Activation or something else). Here are the recommendations of the Theme Review Team. Themes must not incorporate the following, Plugin-territory functionality. … Read more
This issue is as a result of your server not supporting the utf8mb4_unicode_520_ci collation type. To resolve this you should convert the collation for all tables with utf8mb4_unicode_520_ci to utf8_general_ci If you’re exporting through phpmyadmin, you can: Click the “Export” tab for the database Click the “Custom” radio button Go the section titled “Format-specific options” … Read more