public IEnumerable <ReviewStatisticsViewModel> GetRatings(IEnumerable <string> productCodes)
{
//ResultPage<Composite<RatingStatistics, Review>> statistics = null;
ResultPage <RatingStatistics> statistics = null;
var statisticsCriteria = new Criteria <RatingStatisticsFilter>
{
Filter = new RatingStatisticsFilter
{
Targets = productCodes.Select(x => Reference.Create($"product://{x}"))
},
PageInfo = new PageInfo
{
PageSize = productCodes.Count()
}
};
try
{
statistics = _ratingStatisticsService.Get(statisticsCriteria);
if (!statistics.Results.Any())
{
return(new List <ReviewStatisticsViewModel>());
}
}
catch (SocialAuthenticationException ex)
{
throw new SocialRepositoryException("The application failed to authenticate with Episerver Social.",
ex);
}
catch (MaximumDataSizeExceededException ex)
{
throw new SocialRepositoryException(
"The application request was deemed too large for Episerver Social.", ex);
}
catch (SocialCommunicationException ex)
{
throw new SocialRepositoryException("The application failed to communicate with Episerver Social.", ex);
}
catch (SocialException ex)
{
throw new SocialRepositoryException("Episerver Social failed to process the application request.", ex);
}
return(statistics.Results.Select(x => ViewModelAdapter.Adapt(x)));
}
/// <summary>
/// Gets the rating statistics, if any, from the Episerver Social rating
/// repository for the specified target reference.
/// </summary>
/// <param name="target">The target reference by which to filter ratings statistics</param>
/// <returns>The rating statistics if any exist, null otherwise.</returns>
/// <exception cref="SocialRepositoryException">
/// Thrown when errors occur communicating with
/// the Social cloud services.
/// </exception>
public PageRatingStatistics GetRatingStatistics(string target)
{
PageRatingStatistics result = null;
try
{
var ratingStatisticsPage = _ratingStatisticsService.Get(new Criteria <RatingStatisticsFilter>
{
Filter = new RatingStatisticsFilter
{
Targets = new List <Reference> {
Reference.Create(target)
}
},
PageInfo = new PageInfo {
PageSize = 1
}
});
if (ratingStatisticsPage.Results.Any())
{
var statistics = ratingStatisticsPage.Results.ToList().FirstOrDefault();
if (statistics.TotalCount > 0)
{
result = new PageRatingStatistics
{
Average = (double)statistics.Sum / statistics.TotalCount,
TotalCount = statistics.TotalCount
};
}
}
}
catch (SocialAuthenticationException ex)
{
throw new SocialRepositoryException("The application failed to authenticate with Episerver Social.",
ex);
}
catch (MaximumDataSizeExceededException ex)
{
throw new SocialRepositoryException(
"The application request was deemed too large for Episerver Social.", ex);
}
catch (SocialCommunicationException ex)
{
throw new SocialRepositoryException("The application failed to communicate with Episerver Social.", ex);
}
catch (SocialException ex)
{
throw new SocialRepositoryException("Episerver Social failed to process the application request.", ex);
}
return(result);
}
/// <summary>
/// Render the Like button block frontend view.
/// </summary>
/// <param name="currentBlock">The current block instance.</param>
/// <returns>Result of the redirect to the current page.</returns>
public override ActionResult Index(LikeButtonBlock currentBlock)
{
var pageLink = _pageRouteHelper.PageLink;
var targetPageRef = Reference.Create(PermanentLinkUtility.FindGuid(pageLink).ToString());
var anonymousUser = User.Identity.GetUserId() == null ? true : false;
// Create a rating block view model to fill the frontend block view
var blockModel = new LikeButtonBlockViewModel(currentBlock)
{
Link = pageLink
};
try
{
// Using the Episerver Social Rating service, get the existing rating for the current
// user (rater) and page (target). This is done only if there's a user identity. Anonymous
// users will never match a previously submitted anonymous Like rating as they are always
// uniquely generated.
if (!anonymousUser)
{
var raterUserRef = GetRaterRef();
var ratingPage = _ratingService.Get(
new Criteria <RatingFilter>
{
Filter = new RatingFilter
{
Rater = raterUserRef,
Targets = new List <Reference>
{
targetPageRef
}
},
PageInfo = new PageInfo
{
PageSize = 1
}
}
);
// Add the current Like rating, if any, to the block view model. If the user is logged
// into the site and had previously liked the current page then the CurrentRating value
// should be 1 (LIKED_RATING). Anonymous user Likes are generated with unique random users
// and thus the current anonymous user will never see a current rating value as he/she
// can Like the page indefinitely.
if (ratingPage.Results.Count() > 0)
{
blockModel.CurrentRating = ratingPage.Results.ToList().FirstOrDefault().Value.Value;
}
}
// Using the Episerver Social Rating service, get the existing Like statistics for the page (target)
var ratingStatisticsPage = _ratingStatisticsService.Get(
new Criteria <RatingStatisticsFilter>
{
Filter = new RatingStatisticsFilter
{
Targets = new List <Reference>
{
targetPageRef
}
},
PageInfo = new PageInfo
{
PageSize = 1
}
}
);
// Add the page Like statistics to the block view model
if (ratingStatisticsPage.Results.Count() > 0)
{
var statistics = ratingStatisticsPage.Results.ToList().FirstOrDefault();
if (statistics.TotalCount > 0)
{
blockModel.TotalCount = statistics.TotalCount;
}
}
}
catch (Exception)
{
// The rating service may throw a number of possible exceptions
// should handle each one accordingly -- see rating service documentation
}
return(PartialView("~/Features/Blocks/Views/LikeButtonBlock.cshtml", blockModel));
}
