public Pet Update(Pet pet)
{
List <PetColor> allPetColors = _context.PetColors.ToList();
allPetColors.ForEach(pc =>
{
if (!pet.PetColors.Exists(
petColor => petColor.ColorId == pc.ColorId))
{
_context.PetColors.Remove(pc);
}
});
pet.PetColors.RemoveAll(
pc => allPetColors.Exists(
petColor => petColor.ColorId == pc.ColorId &&
petColor.PetId == pet.Id));
pet.PetColors.ForEach(pc =>
{
_context.PetColors.Add(new PetColor()
{
ColorId = pc.ColorId, PetId = pet.Id
});
});
pet.PetColors = null;
_context.Attach(pet).State = EntityState.Modified;
_context.Entry(pet).Reference(p => p.Owner).IsModified = true;
_context.SaveChanges();
return(pet);
}
public Owner Update(Owner owner)
{
_context.Attach(owner).State = EntityState.Modified;
_context.Entry(owner).Collection(o => o.Pets).IsModified = true;
_context.SaveChanges();
return(owner);
}
public Color Update(Color color)
{
_context.Attach(color).State = EntityState.Modified;
_context.Entry(color).Collection(c => c.PetColors).IsModified = true;
_context.SaveChanges();
return(color);
}