How to use restrict_manage_posts action in WordPress

restrict_manage_posts action

Looking to add more filters in your post or page listing page in the WordPress back end? If yes, you can use the restrict_manage_posts action to do this.

To use restrict_manage_posts action, first you have to register it using add_action. You can write this code into functions.php of your activated theme or in a custom WordPress Plugin.

We at WePlugins always prefer to create a custom WordPress Plugin while using hooks so nothing breaks when you update your WordPress Theme in the future.

In the below live example, we have defined a function execute_on_restrict_manage_posts_event which takes 2 parameters and we registered using add_action. The first parameter restrict_manage_posts is the name of the hook, the second parameter execute_on_restrict_manage_posts_event is the name of the function which needs to be called, the third parameter is the priority of calling the hook if the same hook is used multiple times, and the last parameter is the number of arguments (if any) to be passed in the registered function.

Sometimes, you have to remove a registered hook so you can use remove_action to remove restrict_manage_posts action.

Parameters

Below are the 2 parameters required to use this hook.

• $post_type : (string) The post type slug.
• $which : (string) The location of the extra table nav markup: ‘top’ or ‘bottom’ for WP_Posts_List_Table, ‘bar’ for WP_Media_List_Table.

Live Example

Example 1: Add Admin Filters

This snippet demonstrates how to add a dropdown filter for post tags in the admin posts listing page.

    function weplugins_add_admin_filters( $post_type ) {
        if( 'post' !== $post_type ) {
            return;
        }
        $taxonomies_slugs = array( 'post_tag' );
        foreach( $taxonomies_slugs as $slug ) {
            $taxonomy = get_taxonomy( $slug );
            $selected = isset( $_REQUEST[ $slug ] ) ? $_REQUEST[ $slug ] : '';
            wp_dropdown_categories( array(
                'show_option_all' => $taxonomy->labels->all_items,
                'taxonomy'        => $slug,
                'name'            => $slug,
                'orderby'         => 'name',
                'value_field'     => 'slug',
                'selected'        => $selected,
                'hierarchical'    => true,
            ));
        }
    }
    add_action( 'restrict_manage_posts', 'weplugins_add_admin_filters', 10, 1 );
    

Example 2: Remove a Hook Callback

This snippet shows how to remove a previously added hook callback.

    remove_action( 'restrict_manage_posts', 'weplugins_execute_on_restrict_manage_posts_event', 10, 2 );
    

Example 3: Add Custom Post Type Filter

This snippet adds a filter for a custom post type in the admin listing page.

    function weplugins_add_cpt_filter( $post_type ) {
        if( 'custom_post' !== $post_type ) {
            return;
        }
        $taxonomy = 'custom_taxonomy';
        $selected = isset( $_REQUEST[ $taxonomy ] ) ? $_REQUEST[ $taxonomy ] : '';
        wp_dropdown_categories( array(
            'show_option_all' => 'All Items',
            'taxonomy'        => $taxonomy,
            'name'            => $taxonomy,
            'orderby'         => 'name',
            'value_field'     => 'slug',
            'selected'        => $selected,
            'hierarchical'    => true,
        ));
    }
    add_action( 'restrict_manage_posts', 'weplugins_add_cpt_filter', 10, 1 );
    

Contact Us

If you need any customization or have trouble using this hook, please contact us.