// Usuwanie znajomego
private void RemoveFriend__Task(string friendId)
{
// Sprawdzanie, czy użytkownicy są znajomymi
UserFriendshipModel friendship;
try
{
friendship = ApplicationDbContext.Create().AspNetUserFriendships.Where(c => (
(c.User1_ID == friendId && c.User2_ID == this.Id) ||
(c.User1_ID == this.Id && c.User2_ID == friendId) &&
(c.IsActive == true)))
.Single();
}
catch (InvalidOperationException)
{
friendship = null;
}
if (friendship != null)
{
ApplicationDbContext db = new ApplicationDbContext();
Friend friend = new Friend(friendship, this.Id);
friendship.IsActive = false;
db.AspNetUserFriendships.Attach(friendship);
var entry = db.Entry(friendship);
entry.Property(m => m.IsActive).IsModified = true;
db.SaveChanges();
Friends.Remove(friend);
}
return;
}
// Dodawanie nowego użytkownika
private void AddFriend__Task(string friendId)
{
// Sprawdzanie, czy użytkownicy nie są już znajomymi
UserFriendshipModel test;
try
{
test = ApplicationDbContext.Create().AspNetUserFriendships.Where(c => (
(c.User1_ID == friendId && c.User2_ID == this.Id) ||
(c.User1_ID == this.Id && c.User2_ID == friendId) &&
(c.IsActive == true)))
.First();
}
catch (InvalidOperationException)
{
test = null;
}
// Jeżeli nie, dodawanie nowej znajomości do bazy danych i do bieżącego modelu
if (test == null)
{
UserFriendshipModel newFriendship = new UserFriendshipModel(this.Id, friendId);
Friend newFriend = new Friend(newFriendship, this.Id);
Friends.Add(newFriend);
}
return;
}