#Wordpress add media meta box verification#

add_action( 'load-$page-new.php', 'load_our_environment _for_new_posts' ) Īdd_action ( 'current_screen', 'adding_metaboxes_to_editPosts', 10, 1 ) Īs you can see, if we use the action current_screen we can easily introduce all kinds of check and verification points in our code that help us to construct specific environtments for each case, ie, for example, in case of new item, in case of old item, in case of special post type, in case of etc. if ( $screen->action = 'add' ) return Īdd_action( 'load-$page.php', 'load_our_environment' ) // for old postĪdd_action( 'load-$page-new.php', 'load_our_environment' ) // for new post Or for distinguishing between a new post and an old post for controling that this new metabox is just loaded in case of posts. Obviously, we could go straightly to the second step but sometimes, in a more complex situations probably we want to control the load of metaboxes from the beginning so that’s the real beginning: the action current_screen. The first part of this step is attaching a new function adding_metaboxes_to_editPosts to the action current_screen that controls the load of all screens in WordPress environment and always receives one parameter: the current screen as a WP_Screen Object. In this first step, we have to inform to WordPress that we want to include a new metabox in the edit screen of posts and that there is a new function that controls this new metabox… For doing this step, there are some ways, in fact it’s possible to do this step with just a couple of code lines however, in this example we’ll see the official long way. To inform that a new metabox has to be included in the Posts Edit Module To write a function for saving the new data (color and size) with the rest of common post data as two new meta values.To write the metabox function (for example two simple fields for selecting among 5 different colors and sizes).To inform that a new metabox has to be included in the Posts Edit Module.The complete method for developing a new metabox has these three steps: So thanks to this modular design, we can create our metaboxes for adding new functionalities or data to the WordPress Posts. The Edit Screen of Posts and its different Metaboxes The reason of this modular design is to allow developers to introduce easily new boxes (or remove some ones) in the Edit Screen. A little module controls the title, another one controls the visual editor, another one defines the publishing options and actions, another one is for the Post Format… the Categories, the Author’s post, etc. The WordPress posts edit Tool is not an unique compact module that shows all the boxes that appear on the screen but it’s a set of different little modules –called metaboxes– working together.

Wordpress add media meta box