public ActionResult Submit(LikeButtonBlockViewModel likeButtonBlock)
{
var targetPageRef = Reference.Create(PermanentLinkUtility.FindGuid(likeButtonBlock.Link).ToString());
var raterUserRef = GetRaterRef();
try
{
// Add the rating using the Episerver Social Rating service
var addedRating = _ratingService.Add(
new Rating(
raterUserRef,
targetPageRef,
new RatingValue(LikedRating)
)
);
}
catch (Exception)
{
// The rating service may throw a number of possible exceptions
// should handle each one accordingly -- see rating service documentation
}
return(Redirect(UrlResolver.Current.GetUrl(likeButtonBlock.Link)));
}
/// <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));
}