A WordPress widget to generate random Testimonials from the Testimonials Custom Post Type

random_testimonial_widget.php

<?php if( ! class_exists( 'Testimonials_Widget' ) ) :
/**
 * Create a widget to display a random testimonial post.
 * Refer to https://gist.github.com/1971046 and https://gist.github.com/1971054 for the Custom Post Type and Meta Box Setup
 *
 * @since 1.0
 */
class Testimonials_Widget extends WP_Widget {

	function Testimonials_Widget() {
		$widget_ops = array( 'description' => __( 'Displays a random testimonial.'  ), 'classname' => 'testimonials_widget' );
		$this->WP_Widget( 'testimonials_widget', __( 'Testimonial' ), $widget_ops );
	}

	function widget( $args, $instance ) {
    	extract( $args );

    	$title = ( $instance['title'] != '' ) ? esc_attr( $instance['title'] ) : __( 'Testimonials' );

		echo $before_widget;
		echo $before_title . $title . $after_title;

		$testimonial = new WP_Query( array( 'post_type' => 'testimonial', 'post_status' => 'publish', 'orderby' => 'rand', 'showposts' => 1 ) );

		if ( $testimonial->have_posts() ) : while ( $testimonial->have_posts() ) : $testimonial->the_post();
			$details[] = ucfirst( get_post_meta( get_the_ID(), 'parent_name', true ) );
			$details[] = ucfirst( get_post_meta( get_the_ID(), 'child_name', true ) ) . "'s " . get_post_meta( get_the_ID(), 'parent_type', true );
			$details[] = ucfirst( get_post_meta( get_the_ID(), 'parent_location', true ) );

			echo '<blockquote>';
			the_content();
			echo '</blockquote>';
			echo '<p id="testimonial_details"><strong>';
			echo implode( ', ', $details );
			echo '</strong></p>';
		endwhile; endif;

		echo $after_widget;
	}

	function form( $instance ) {
		$title = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : __( 'Testimonials' );
		?>
		<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e( 'Title:' ); ?></label>
		<input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo $title; ?>" /></p>
		<?php
 	}

	function update( $new_instance, $old_instance ){
		$instance          = $old_instance;
		$instance['title'] = strip_tags($new_instance['title']);
		return $instance;
	}
}
endif;?>