Add Campaign Progress Bar Shortcode

/**

 * Add a new shortcode to display the progress bar for a particular campaign.

 *

 * After adding this, you can display a particular campaign's progress bar with

 * the following:

 *

 * [charitable_progress_bar campaign_id=123]

 */

add_shortcode( 'charitable_progress_bar', function( $atts ) {

	if ( ! isset( $atts['campaign_id'] ) ) {

		return;

	}

	ob_start();

	charitable_template_campaign_progress_bar( charitable_get_campaign( $atts['campaign_id'] ) );

	return ob_get_clean();

} );