SiteFinity Retrieve RateValue Content Block from Shortcode

gistfile1.cs

public static class RateValueShortcodeProcessor
{
   /// <summary>
   /// Expands all RateValue shortcodes in the specified text
   /// </summary>
   /// <param name="inputText">The input text.</param>
   /// <returns>String with replaced short code values</returns>
   public static string Expand(object inputText)
   {
      if (inputText == null) return string.Empty;
      var result = inputText.ToString();

      // use regex to find matches
      const string regex1 = @"\[RateValue:(?<title>.*?)\]";
      var matches = Regex.Matches(result, regex1);

      foreach (Match match in matches)
      {
         // Get Rate Title
         var rateTitle = match.Groups["title"].Value;

         // Replace shortcode text with retrieved Rate value from shared 
         // content blocks. Filter by the RateValues category so that we don't
         // get things mixed up with any actual content blocks.
         var taxManager = TaxonomyManager.GetManager();
         var catManager = taxManager
                           .GetTaxonomies<HierarchicalTaxonomy>()
                           .SingleOrDefault(s => s.Name == "Categories");

         var rateValuesCategory = catManager.Taxa.FirstOrDefault(c => c.Title == "RateValues");
         var singleCategoryId = rateValuesCategory.Id;

         var manager = ContentManager.GetManager();
         var contentItem = manager
                              .GetContent()
                              .FirstOrDefault(x => x.GetValue<TrackedList<Guid>>("Category").Contains(singleCategoryId)
                                                   && x.Title == rateTitle
                                                   && x.Status == ContentLifecycleStatus.Live);

         var rateValue = contentItem != null ? contentItem.Content.ToString() : "RATE VALUE NOT FOUND";
         result = result.Replace(match.Value, rateValue);
      }

      return result;
   }
}