public MenuViewModel()
{
Headers = new List<Header>();
if (IsInDesignMode)
{
var header = new Header {Title = "Header"};
var meal = new Meal {Title = "Meal"};
header.Meals.Add(meal);
Headers.Add(header);
Meals = new List<Meal>(header.Meals);
Header = header;
}
else
{
using (var entities = new HillStationEntities())
{
foreach (var header in entities.Headers.Include(h => h.Meals).OrderBy(h => h.DisplayOrder).ToList())
{
Headers.Add(new Header(header));
}
}
}
Cancel = new RelayCommand(CancelUpdate);
SaveData = new RelayCommand(Save);
Decrement = new RelayCommand<string>(p => AdjustPrice(p, -0.05m));
Increment = new RelayCommand<string>(p => AdjustPrice(p, 0.05m));
}
public void RemoveCustomer(Customer customer)
{
using (var entities = new HillStationEntities())
{
var customerEntity = entities.Customers.Find(customer.Id);
entities.Customers.Remove(customerEntity);
entities.SaveChanges();
}
}
public Customer AddCustomer(Customer customer)
{
using (var entities = new HillStationEntities())
{
entities.Customers.Add(customer);
entities.SaveChanges();
entities.Entry(customer).Reload();
return customer;
}
}
public void UpdateCustomer(Customer customer)
{
using (var entities = new HillStationEntities())
{
var customerEntity = entities.Customers.Find(customer.Id);
customerEntity.Name = customer.Name;
customerEntity.Address = customer.Address;
customerEntity.Postcode = customer.Postcode;
customerEntity.Phone = customer.Phone;
entities.SaveChanges();
}
}
private void Save()
{
using (var entities = new HillStationEntities())
{
foreach (var header in Headers)
{
entities.Headers.Attach(header);
entities.Entry(header).State = EntityState.Modified;
foreach (var meal in header.Meals)
{
entities.Meals.Attach(meal);
entities.Entry(meal).State = EntityState.Modified;
}
}
entities.SaveChanges();
OnMenuOpdated(new MenuUpdatedEventArgs {UpdateOperation = UpdateOperation.Updated});
}
}
private Task<bool> Initialise()
{
return Task.Factory.StartNew(() =>
{
using (var entities = new HillStationEntities())
{
Headers =
new List<Header>(
entities.Headers.OrderBy(h => h.DisplayOrder).ToList().Select(header => new Header(header)));
Customers = new List<Customer>(entities.Customers.OrderBy(c => c.Name));
}
return true;
});
}