WP SNIPPET: OnePage wp_query

WP SNIPPET: OnePage wp_query

<?php
	global $wp_query;
	// is Page a parent page
	if ( $post->post_parent == 0 ) {
		// on a parent page, get child pages
		$pages = get_pages( 'hierarchical=0&parent=' . $post->ID );
		// loop through child pages
		foreach ( $pages as $post ){
			setup_postdata( $post );
			// get the template name for the child page
			$template_name = get_post_meta( $post->ID, '_wp_page_template', true );
			$template_name = ( 'default' == $template_name ) ? 'page.php' : $template_name;
			// default page template_part content-page.php
			$slug = 'page';
			// check if the slug exists for the child page
			if ( locate_template( basename( $template_name ) , $load, $require_once ) != '' ) {
				$slug = pathinfo( $template_name, PATHINFO_FILENAME );
			}
			// load the content template for the child page
			get_template_part( $slug );
		}
	}
?>