Shortcode within a shortcode

shortcode_within_a_shortcode.php

/**
 * wps_nested_shortcodes_products_display
 *
 * Place this in functions.php
 */
function wps_nested_shortcodes_products_display( $atts ) {

   $a = shortcode_atts( array(
   	  'types_shortcode' => '',
      'show_featured_only' => '',
      'excludes' => '',
      'hide_quantity' => '',
      'page_size' => '',
   ), $atts );

   /**
    * Retrieve the value from your "types" shortcode (types_shortcode attribute)
    */
   $field = do_shortcode('[types field="' . $a['types_shortcode'] . '"][/types]');

   // build the shortcode with the desired options
   $wps_products = do_shortcode('[wps_products product_id="' . $field . '" show_featured_only="' . $a['show_featured_only'] . '" excludes="' . $a['excludes'] . '" hide_quantity="' . $a['hide_quantity'] . '" page_size="' . $a['page_size'] . '"]');

   return $wps_products;
}

add_shortcode( 'wps_dynamic_products_id', 'wps_nested_shortcodes_products_display' );