public async Task <IHttpActionResult> GetEvaluation(int profid, int bookid)
{
BookUserLike bookUserLike = await db.BookUserLike.FindAsync(bookid, profid);
if (bookUserLike == null)
{
return(NotFound());
}
return(Ok(bookUserLike));
}
public async Task <IHttpActionResult> UpDateRate(int bookid, int profid, BookUserLike bookUserLike)
{
if (bookid.Equals(0) && profid.Equals(0))
{
return(BadRequest());
}
if (bookid.Equals(0) || profid.Equals(0))
{
//check if model state contains only Foreign Ids
var pid = bookUserLike.Profile.F_Id;
var bid = bookUserLike.Book.F_Id;
if (pid != null && bid != null)
{
bookUserLike.BookId = _booksController.GetBookId(bid);
bookUserLike.ProfileId = _profilesController.GetProfileId(pid);
//update also the parameters
bookid = bookUserLike.BookId;
profid = bookUserLike.ProfileId;
bookUserLike.Profile = null;
bookUserLike.Book = null;
}
else
{
return(BadRequest(ModelState));
}
}
if (bookid != bookUserLike.BookId)
{
return(BadRequest());
}
if (profid != bookUserLike.ProfileId)
{
return(BadRequest());
}
db.Entry(bookUserLike).State = EntityState.Modified;
try
{
await db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!BookUserLikeExists(bookid) || !BookUserLikeExists(profid))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public async Task <IHttpActionResult> PostBookUserLike(BookUserLike bookUserLike)
{
if (bookUserLike.BookId.Equals(0) && bookUserLike.ProfileId.Equals(0))
{
//check if model state contains only Foreign Ids
var pid = bookUserLike.Profile.F_Id;
var bid = bookUserLike.Book.F_Id;
if (pid != null && bid != null)
{
bookUserLike.BookId = _booksController.GetBookId(bid);
bookUserLike.ProfileId = _profilesController.GetProfileId(pid);
bookUserLike.Profile = null;
bookUserLike.Book = null;
}
else
{
return(BadRequest(ModelState));
}
}
db.BookUserLike.Add(bookUserLike);
try
{
await db.SaveChangesAsync();
}
catch (DbUpdateException exception)
{
var msg = exception.Message;
if (BookUserLikeExists(bookUserLike.BookId))
{
return(Conflict());
}
else
{
throw;
}
}
return(CreatedAtRoute("DefaultApi", new { id = bookUserLike.BookId }, bookUserLike));
}
private List <BookUserLike> GetRecommendations(int id)
{
var pathToDataFile =
Path.Combine(System.Web.HttpRuntime.AppDomainAppPath, "data/ratings.txt");
//create the reccomend engine
var recommender = CreateRecommender(pathToDataFile);
//fetch results for specific user 7results
var recommendedItems = recommender.Recommend(id, 7);
var recomendList = new List <BookUserLike>();
foreach (var ritem in recommendedItems)
{
var userlike = new BookUserLike
{
BookId = (int)ritem.GetItemID(),
ProfileId = id,
Value = (int)Math.Round(ritem.GetValue(), MidpointRounding.AwayFromZero),
Scale = 5
};
recomendList.Add(userlike);
}
return(recomendList);
}
