WordPress の User Role Editor 等で、カスタム投稿タイプに独自に権限設定する場合に、カスタム投稿タイプ用の権限を自動的に追加する。

add_custom_post_type_role.php

<?php
function add_custom_post_type_role( $post_type ,$arg ) {

    $role = get_role('administrator');
	if( "post" != $arg->capability_type and !$arg->_builtin ) {

		$role->add_cap( "edit_{$arg->name}" );
		$role->add_cap( "read_{$arg->name}" );
		$role->add_cap( "delete_{$arg->name}" );
		$role->add_cap( "delete_{$arg->name}s" );
		$role->add_cap( "edit_{$arg->name}s" );
		$role->add_cap( "edit_others_{$arg->name}s" );
		$role->add_cap( "delete_others_{$arg->name}s" );
		$role->add_cap( "publish_{$arg->name}s" );
		$role->add_cap( "edit_published_{$arg->name}s" );
		$role->add_cap( "delete_published_{$arg->name}s" );
		$role->add_cap( "delete_private_{$arg->name}s" );
		$role->add_cap( "edit_private_{$arg->name}s" );
		$role->add_cap( "read_private_{$arg->name}s" );
	}

}
add_action( "registered_post_type", "add_custom_post_type_role", 10, 2 );

?>