The why part can be found in ticket #24889. Let me quote @azaozz: When support for multi-use widgets was introduced, a lot of widgets got converted from “single” to “multi” at the same time. To keep backward compatibility and not break the existing widgets, there was some conversion code that would set the “single” widgets … Read more
Your problem is that you’re calling the wrong method for generating the name attribute. It should be $this->get_field_name(‘via_cat’) Also, you can use wp_dropdown_categories(), no need to reinvent the wheel: wp_dropdown_categories(array( ‘name’ => $this->get_field_name(‘via_cat’), ‘selected’ => (int)$instance[‘via_cat’], ));
Filter the arguments for the blogroll: add_filter( ‘widget_links_args’, ‘wpse_76521_filter_blogroll’ ); function wpse_76521_filter_blogroll( $args ) { $li_start = isset ( $args[‘before’] ) ? $args[‘before’] : ‘<li>’; $args[‘before’] = $li_start . ‘<i class=”icon-ok”></i>’; return $args; } Explanation The blogroll is created by the widget class WP_Widget_Links. This class calls wp_list_bookmarks() with some prepared widget arguments which we … Read more
I was experiencing a similar problem with one of my custom widgets. It seems that dynamically inserted field values do not trigger the widget form to update. I wound up adding the following to the js that inserts the dynamic value: $(input).trigger(‘change’); where input is the field you are updating. Not sure if there is … Read more
WP_Query goes only through posts by default. Try adding page as your post type: $the_query = new WP_Query(array( ‘post_type’ => ‘page’, /* overrides default ‘post’ */ ‘meta_key’ => ‘_wp_page_template’, ‘meta_value’ => ‘templates/_partner.php’ )); See: WP_Query – Type Parameters
The cart widget isn’t showing because it’s configured to not show on the cart and checkout page. If you want to change that take a look at class-wc-widget-cart.php, there you find the following line: if ( is_cart() || is_checkout() ) return; Change it to: if ( is_cart() ) return; To show the widget on the … Read more
Add a widget area to your single.php, front-page.php, home.php or whatever you want.. template’s theme file. Than at the back-end go to Appearance > Widgets and move the widget to the widget area you just created.
The Widgets API is the quickest way to make a widget that’s reusable. Example use: class My_Widget extends WP_Widget { /** * PHP4 constructor */ function My_Widget() { My_Widget::__construct(); } /** * PHP5 constructor */ function __construct() { // actual widget processes } /** * Echo the settings update form * * @param array $instance … Read more
The error isn’t actually caused by your PHP version (PHP 4 constructors won’t be removed until PHP 7) – it’s a warning produced by WordPress in preparation for this. Each repetition of the error represents a plugin using the outdated code. Until your plugins’ authors update them, you can run the following shell command on … Read more
Put simply: not inherently. If you have a widget that does NOTHING at all…like, literally you add it and there’s no code for the widget outside of registering it, you’ll see SUCH a small performance hit from adding it that you would need to be looking at microtime() numbers to notice anything. That said, as … Read more