Just a quick snippet.
In case you need to make a custom post type screen be one column, you need to add/modify two filters. This example uses CPT_Core:
<?php
class My_Site_Posts_CPT extends CPT_Core {
/**
* Register Custom Post Types. See documentation in CPT_Core, and in wp-includes/post.php
*/
public function __construct() {
// Register this cpt
// First parameter should be an array with Singular, Plural, and Registered name
parent::__construct(
array( __( 'Site Post', 'wds-reports' ), __( 'Site Posts', 'wds-reports' ), 'site-posts' ),
array(
'public' => false,
'publicly_queryable' => true,
'show_ui' => true,
'show_in_menu' => 'edit.php?post_type=report',
'rewrite' => false,
'capability_type' => 'post',
'has_archive' => false,
'hierarchical' => false,
'menu_position' => null,
'supports' => array( 'title', 'author', 'thumbnail' ),
)
);
add_filter( 'screen_layout_columns', array( $this, 'set_column_num_max_to_one' ), 10, 3 );
add_filter( 'get_user_option_screen_layout_site-posts', array( $this, 'make_one_col' ) );
}
public function set_column_num_max_to_one( $empty_columns, $screen_id, $screen ) {
if ( $this->post_type() == $screen_id ) {
$empty_columns[ $screen_id ] = 1;
}
return $empty_columns;
}
public function make_one_col( $result ) { return 1; }
}
new My_Site_Posts_CPT();
