Here's a solution that will force a one column screen layout for any posts in the $one_column_layout_overrides array. Per the code in the original question, post type support for the editor is also removed for these posts.
Screen layout options are stored in a user option for each post type. Like standard options, user option values can be filtered on the fly.
This solution uses the dynamic filter get_user_option_{$option}, where {$option} is the name of the user option to filter. In this case the option is named screen_layout_{$post->post_type} where {$post->post_type} is the post type being edited.
So, to override the user option for layout settings for the page post type, the filter would be: get_user_option_screen_layout_page.
Checks are in place to ensure that we only process posts in the $one_column_layout_overrides array because we are overriding an option that applies to all posts of a particular type.
/** * Override the Screen Options > Layout setting for list of defined posts. * These posts will be forced to use a 1 column layout and * will have post type support for the editor removed. */ add_action( 'admin_init', 'wpse_override_screen_layout_columns' ); function wpse_override_screen_layout_columns() { // Get the ID of the current post. Bail if we can't. $post_id = $_GET['post']; if ( ! $post_id ) { return; } // Array of post IDs that will be forced to one column layouts. // Customize array values to fit your needs. $one_column_layout_overrides = [ 13459, ]; // Bail if this post is not one that we want to process. if ( ! in_array( $post_id, $one_column_layout_overrides ) ) { return; } // Get the post object. Bail if this fails. $post = get_post( $post_id ); if ( ! $post ) { return; } /** * Dynamic filter for the option "screen_layout_{$post->post_type}". * * The dynamic portion of the hook name, `$option`, refers to the user option name. * * @param mixed $result Value for the user's option. * @param string $option Name of the option being retrieved. * @param WP_User $user WP_User object of the user whose option is being retrieved. */ add_filter( "get_user_option_screen_layout_{$post->post_type}", function( $result, $option, $user ) { // Override result to 1 column layout. $result = 1; return $result; }, 10, 3 ); // Remove editor support for this post type. remove_post_type_support( $post->post_type, 'editor' ); }
