public static void IsUnique <TOwnerVM, TItemVM>(
this CollectionValidatorBuilder <TOwnerVM, TItemVM> builder,
string errorMessage,
object details = null
)
where TOwnerVM : IViewModel
where TItemVM : IViewModel
{
IsUnique(
builder,
x => x,
errorMessage,
details
);
}
public static void IsUnique <TOwnerVM, TItemDescriptor, T>(
this CollectionValidatorBuilder <TOwnerVM, TItemDescriptor, T> builder, // TODO
string errorMessage,
object details = null
)
where TOwnerVM : IViewModel
where TItemDescriptor : IVMDescriptor
{
builder.Custom <IViewModel <TItemDescriptor> >((args) => {
args
.Items
.GroupBy(x => x.Kernel.GetValue(args.TargetProperty))
.Where(g => g.Count() > 1)
.SelectMany(g => g)
.ForEach(item => {
args.AddError(item, errorMessage, details);
});
});
}
public static void IsUnique <TOwnerVM, TItemVM, TKey>(
this CollectionValidatorBuilder <TOwnerVM, TItemVM> builder,
Func <TItemVM, TKey> keySelector,
string errorMessage,
object details = null
)
where TOwnerVM : IViewModel
where TItemVM : IViewModel
{
builder.Custom(args => {
args
.Items
.GroupBy(keySelector)
.Where(g => g.Count() > 1)
.SelectMany(g => g)
.ForEach(item => {
args.AddError(item, errorMessage, details);
});
});
}
