public Expression <Func <DemoContext, Person> > AddActor(DemoContext db, AddActorArgs args)
{
var person = new Person {
Id = (uint)new Random().Next(),
FirstName = args.FirstName,
LastName = args.LastName,
};
db.People.Add(person);
var actor = new Actor {
MovieId = args.MovieId,
Person = person,
};
db.Actors.Add(actor);
db.SaveChanges();
return((ctx) => ctx.People.First(p => p.Id == person.Id));
}
public Expression <Func <DemoContext, Person> > AddActor(DemoContext db, [MutationArguments] AddActorArgs args, GraphQLValidator validator)
{
if (string.IsNullOrEmpty(args.FirstName))
{
validator.AddError("Name argument is required");
}
if (db.Movies.FirstOrDefault(m => m.Id == args.MovieId) == null)
{
validator.AddError("MovieId not found");
}
// ... do more validation
if (validator.HasErrors)
{
return(null);
}
// we're here and valid
var person = new Person
{
Id = (uint)new Random().Next(),
FirstName = args.FirstName,
LastName = args.LastName,
};
db.People.Add(person);
var actor = new Actor
{
MovieId = args.MovieId,
Person = person,
};
db.Actors.Add(actor);
db.SaveChanges();
return((ctx) => ctx.People.First(p => p.Id == person.Id));
}
public Expression <Func <DemoContext, IEnumerable <Person> > > AddActor2(DemoContext db, [MutationArguments] AddActorArgs args)
{
var person = new Person
{
Id = (uint)new Random().Next(),
FirstName = args.FirstName,
LastName = args.LastName,
};
db.People.Add(person);
var actor = new Actor
{
MovieId = args.MovieId,
Person = person,
};
db.Actors.Add(actor);
db.SaveChanges();
return((ctx) => ctx.People.Where(p => p.FirstName == person.FirstName));
}