private void UpdateMovieMovies(string[] selectedMovies, Rental rentalToUpdate)
{
if (selectedMovies == null)
{
rentalToUpdate.MovieAssigns = new List <MovieAssign>();
return;
}
var selectedMovieHS = new HashSet <string>(selectedMovies);
var rentalMovies = new HashSet <int>
(rentalToUpdate.MovieAssigns.Select(c => c.Movie.MovieID));
foreach (var movie in _context.Movies)
{
if (selectedMovieHS.Contains(movie.MovieID.ToString()))
{
if (!rentalMovies.Contains(movie.MovieID))
{
rentalToUpdate.MovieAssigns.Add(new MovieAssign {
RentalID = rentalToUpdate.RentalID, MovieID = movie.MovieID
});
}
}
else
{
if (rentalMovies.Contains(movie.MovieID))
{
MovieAssign movieToRemove = rentalToUpdate.MovieAssigns.FirstOrDefault(i => i.MovieID == movie.MovieID);
_context.Remove(movieToRemove);
}
}
}
}
private void UpdateMovieGenres(string[] selectedGenres, Movie movieToUpdate)
{
if (selectedGenres == null)
{
movieToUpdate.GenreAssigns = new List <GenreAssign>();
return;
}
var selectedGenreHS = new HashSet <string>(selectedGenres);
var movieGenres = new HashSet <int>
(movieToUpdate.GenreAssigns.Select(c => c.Genre.GenreID));
foreach (var genre in _context.Genres)
{
if (selectedGenreHS.Contains(genre.GenreID.ToString()))
{
if (!movieGenres.Contains(genre.GenreID))
{
movieToUpdate.GenreAssigns.Add(new GenreAssign {
MovieID = movieToUpdate.MovieID, GenreID = genre.GenreID
});
}
}
else
{
if (movieGenres.Contains(genre.GenreID))
{
GenreAssign genreToRemove = movieToUpdate.GenreAssigns.FirstOrDefault(i => i.GenreID == genre.GenreID);
_context.Remove(genreToRemove);
}
}
}
}