Code for Star Ratings in Now Reading Reloaded

To get the starred ratings like you see on my book review and info pages just upload three images to the now-reading folder in your template directory: one representing a no star, one representing a half star, and one representing a full star (I’ve included my images in the download). Then add the following code to your functions.php file.

/**
 * Rating icons for the library
 *
 * @param mixed | $this_book | The id of the desired book; defaults to current book within the `have_books` loop
 */
function star_rating($this_book = NULL) {
	global $book;
	if ($this_book == NULL) $this_book = $book;
	$rate = $this_book->rating;
	$no_star = '<img class="star" src="'.get_bloginfo('template_directory').'/now-reading/no-star.png" alt="" width="18" />';
	$full_star = '<img class="star" src="'.get_bloginfo('template_directory').'/now-reading/full-star.png" alt="" width="18" />';
	$half_star = '<img class="star" src="'.get_bloginfo('template_directory').'/now-reading/half-star.png" alt="" width="18" />';

	if ($rate) :
		switch ($rate) {
			case 1:
				echo '<span title="½ star">'.$half_star.$no_star.$no_star.$no_star.$no_star.'</span>';
			break;
			case 2:
				echo '<span title="1 star">'.$full_star.$no_star.$no_star.$no_star.$no_star.'</span>';
			break;
			case 3:
				echo '<span title="1½ stars">'.$full_star.$half_star.$no_star.$no_star.$no_star.'</span>';
			break;
			case 4:
				echo '<span title="2 stars">'.$full_star.$full_star.$no_star.$no_star.$no_star.'</span>';
			break;
			case 5:
				echo '<span title="2½ stars">'.$full_star.$full_star.$half_star.$no_star.$no_star.'</span>';
			break;
			case 6:
				echo '<span title="3 stars">'.$full_star.$full_star.$full_star.$no_star.$no_star.'</span>';
			break;
			case 7:
				echo '<span title="3½ stars">'.$full_star.$full_star.$full_star.$half_star.$no_star.'</span>';
			break;
			case 8:
				echo '<span title="4 stars">'.$full_star.$full_star.$full_star.$full_star.$no_star.'</span>';
			break;
			case 9:
				echo '<span title="4½ stars">'.$full_star.$full_star.$full_star.$full_star.$half_star.'</span>';
			break;
			case 10:
				echo '<span title="5 stars">'.$full_star.$full_star.$full_star.$full_star.$full_star.'</span>';
			break;
		}
		echo '

';
	else :
		echo "Not Rated";
	endif;
}

Now add <?php star_rating($book_id); ?> where you want it to display. If you’re using it inside the have_books you don’t need the book id. Setting it will override the default, which is the current book. I use a custom field (“Book ID”…creative, I know) to set the book id for the post, and put it in a variable for my templates.

That’s it. You can use any set of images, just use the proper file names or adjust the functions.php code as needed.

Download [download id=”4”]