How to Add a Custom Field Shortcode to Use Any Custom Field in Posts

In another tutorial I am writing, one for non-coders, I needed a way to pull in custom fields into the post. Currently (and sadly), in Genesis there is no way to do this; however, Genesis does have a great php function that already does this, genesis_get_custom_field(). So turning that into a shortcode is rather easy. Just add the following to your functions.php code:

add_shortcode( 'post_field', 'genesis_post_field_shortcode' );
/**
 * Returns the value of a custom field.
 *
 * Supported shortcode attributes are:
 *   field (field name),
 *
 * @param array $atts Shortcode attributes
 * @return string Shortcode output
 */
function genesis_post_field_shortcode( $atts ) {

	$defaults = array(
		'field'  => '',
	);
	$atts = shortcode_atts( $defaults, $atts );

	return genesis_get_custom_field( $atts['field'] );
}

To use the shortcode, you just insert [ post_field field="my_field_name"] (without the space in the front) and boom! It works!