If your custom page template filename is foobar.php, you can use get_post_meta(): global $post; if ( ‘foobar.php’ == get_post_meta( $post->ID, ‘_wp_page_template’, true ) ) { // The current page has the foobar template assigned // do something } Personally, I like calling this inside my add_meta_boxes_page callback, and wrapping it around the add_meta_box() call itself. … Read more
Here is the solution. Hope it will help you const { registerPlugin } = wp.plugins; const { PluginDocumentSettingPanel } = wp.editPost; const MyDocumentSettingTest = () => ( <PluginDocumentSettingPanel className=”my-document-setting-plugin” title=”My Panel”> <p>My Document Setting Panel</p> </PluginDocumentSettingPanel> ); registerPlugin( ‘document-setting-test’, { render: MyDocumentSettingTest } ); https://github.com/WordPress/gutenberg/blob/master/packages/edit-post/src/components/sidebar/plugin-document-setting-panel/index.js#L86
Just add the class to the markup you are generating in the callback.
The best way would be using JavaScript to inject the element. Here’s the gist of the markup for that page: <div id=”poststuff”> <div id=”post-body” class=”metabox-holder columns-2″> <div id=”post-body-content”> <div id=”titlediv”> … other stuff … </div> <div id=”postdivrich” class=”postarea”> … other stuff … </div> </div> </div> </div> The titlediv is the title. The postdivrich is the … Read more
You can use jQuery as it already loaded on posts. The idea is to stop the form submit action. I have two html elements in my meta: <select name=”cars” class=”required”> <option value=”-1″>Choose a car</option> <option value=”volvo”>volvo</option> <option value=”saab”>saab</option> <option value=”bmw”>bmw</option> </select> <input type=”text” class=”required” placeholder=”Type year”> The form has an id of “post”. So with … Read more
I’m sure there is a more elegant approach (I’d love to know about!). Anyhow: I’d like to offer a solution. You could create a default sidebar with default widgets and a custom sidebar with all available custom widgets. Then you use a combination of the following plugins: simple fields and widget logic to only show … Read more
It’s informative to check out the /wp-admin/post.php file, that contains the edit_post() function that calls wp_update_post(), which is a wp_insert_post() wrapper. Here’s a skeleton for saving the assigned category terms: /** * Saving assigned category terms (skeleton) */ add_action( ‘admin_action_editpost’, function() { add_filter( ‘wp_insert_post_data’, function( $data, $parr ) { add_action( ‘save_post_post’, function( $post_ID, $post ) … Read more
You cannot use a real metabox to do that, hook into edit_form_after_title instead. Here is a simple example: add_action( ‘edit_form_after_title’, ‘wpse_87478_pseudo_metabox’ ); add_action( ‘save_post’, ‘wpse_87478_save_metabox’ ); function wpse_87478_pseudo_metabox() { global $post; $key = ‘_wpse_87478’; if ( empty ( $post ) || ‘post’ !== get_post_type( $GLOBALS[‘post’] ) ) return; if ( ! $content = get_post_meta( $post->ID, … Read more
The way your code is setup is just wrong, you are making two database calls for each custom field and if you have between 2-30 fields like this then that means you make over 60 calls to the database which can be done with a single call using get_post_custom() for ex: $custom_fields = get_post_custom($post->ID); for … Read more
Define an array of post types, and register the metabox for each one separately: function add_custom_meta_box() { $post_types = array ( ‘post’, ‘page’, ‘event’ ); foreach( $post_types as $post_type ) { add_meta_box( ‘custom_meta_box’, // $id ‘Custom Meta Box’, // $title ‘show_custom_meta_box’, // $callback $post_type, ‘normal’, // $context ‘high’ // $priority ); } }