/// <summary>
/// 找到该用户发现house被赞的数目
/// </summary>
/// <param name="ownerId"></param>
/// <returns></returns>
public int FindHouseLikedCountByUser(Guid ownerId)
{
var query = this.getNewQueryObject();
var dict = new Dictionary <string, object>
{
{ "OwnerId", ownerId }
};
query.AppendQuery(dict, QueryLogic.And);
var houses = EntityRepository.FindAsQueryable(query);
int housesLikedCount = 0;
foreach (var house in houses)
{
housesLikedCount += LrfService.GetLRFCount(house.Id, LRFType.Like);
}
return(housesLikedCount);
}
//rate
/// <summary>
/// rate the entity, make sure you have the RateTimes and Rating field in you entity, it will update the ratings in the entity
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="entityService"></param>
/// <param name="targetId"></param>
/// <param name="userId"></param>
/// <param name="lrfService"></param>
/// <param name="rating"></param>
/// <returns></returns>
public static float Rate <T>(this EntityService <T> entityService, Guid targetId, Guid userId,
LikeRateFavService lrfService, float rating) where T : Entity
{
var doIRate = lrfService.DoILikeRateFav(userId, targetId, LRFType.Rate);
//calc new rating
Dictionary <string, object> queryDict = new Dictionary <string, object>();
queryDict.Add("_id", targetId);
QueryObject <T> query = new QueryObject <T>(entityService.EntityRepository);
query.AppendQuery(queryDict, QueryLogic.And);
var entity = entityService.FindOneById(targetId);
var oldRating = (float)entity.GetType().GetProperty("Rating").GetValue(entity, null);
var oldRateTimes = lrfService.GetLRFCount(targetId, LRFType.Rate);
if (!doIRate)
{
//my first time rating
var newRating = (oldRating * oldRateTimes + rating) / (oldRateTimes + 1);
lrfService.Rate(userId, targetId, rating);
((MongoDBRepository <T>)entityService.EntityRepository).Update(query,
Update.Set("Rating", newRating));
return(newRating);
}
else
{
//get my old rating
var myOldRating = lrfService.GetMyRatingFor(userId, targetId);
//calc the new one
var newRating = (oldRating * oldRateTimes - myOldRating + rating) / (oldRateTimes);
lrfService.Rate(userId, targetId, rating);
((MongoDBRepository <T>)entityService.EntityRepository).Update(query,
Update.Set("Rating", newRating));
lrfService.Rate(userId, targetId, rating);
return(newRating);
}
}