Get post type on edit page

Question

I am writing the backend for my theme and have 4 custom post types. I have registered them all and now I am writing the metaboxes and handlers.

My question is: in WordPress admin, is there a way of determining which custom post type you’re editing? i.e. lets say I have a custom post type of Testimonials, I click Add New and am presented with various fields. Is there a function in WordPress that will tell me what this post type is?

I’ve tried get_post_type(), but it returns nothing.

in progress 0
Steve Clark 11 years 2010-12-23T05:45:00-05:00 0 Answer 86 views 0

Answer ( 1 )

    0
    2021-08-01T10:19:02-05:00

    There are hooks and variables set that will allow you determine post type pretty easily, so you can hook onto actions specific to a given type, i’m going to provide some examples below.

    Examples

    If wanted to add a metabox to the post creation screen for the book post type, then i’d probably use a hook along the lines of..

    add_action( 'add_meta_boxes_book', 'my_callback_defining_metaboxes' );
    function my_callback_defining_metaboxes() {
        add_meta_box( ... );
    }
    

    You can replace book with an appropriate post type, eg. post, page, or a custom one.

    If i wanted to enqueue scripts onto the edit or add new posts screen for the book post type, i might use..

    add_action( 'admin_print_scripts-edit.php', 'my_func_to_enqueue_scripts' );
    add_action( 'admin_print_scripts-post-new.php', 'my_func_to_enqueue_scripts' );
    function my_func_to_enqueue_scripts() {
        global $typenow;
        if( 'book' == $typenow )
            wp_enqueue_script( ... );
    }
    

    If i wanted to go a step further and hook onto every page that deals with the book post type i’ll use a more generic hook and perform conditional logic on one of the admin variables..(as long as you don’t hook in really early you can reference these vars reliably).

    add_action( 'admin_print_scripts', 'enqueue_scripts_on_specific_posttype_pages' );
    function enqueue_scripts_on_specific_posttype_pages() {
        global $parent_file;
        if( 'edit.php?post_type=book' == $parent_file )
            wp_enqueue_script( ... );
    }
    

    $parent_file is always the link or URL of the parent menu item for the given post type, which you’ll notice is different to the generic $hook_suffix that’s appended to the admin_print_scripts- hook, eg. admin_print_scripts-edit.php ..

    The above example would hook the enqueue onto any page for the book post type, that includes the taxonomy management screens.

    Hope the above is helpful.

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