public MenuGroupsViewModel(List <FoodItem> foodItems)
{
MenuGroups = new List <MenuGroup>();
var groupsNames = foodItems.Select(mi => mi.Category).Distinct().OrderBy(mi => mi);
foreach (var groupName in groupsNames)
{
var foodItemsInGroup = foodItems.Where(t => t.Category == groupName);
var newGroup = new MenuGroup()
{
Title = groupName == null ? "Brak" : groupName,
ShortTitle = groupName == null ? "Brak" : groupName,
};
newGroup.AddRange(foodItemsInGroup);
MenuGroups.Add(newGroup);
}
}