public RecipeIngredientViewModel(RecipeIngredientViewModel other, int portion)
{
this._ingredient = other._ingredient;
this._relation = new RecipeIngredientRelation {
IngredientId = other.IngredientId, Quantity = other.Quantity * portion, Unit = other.Unit
};
}
private ObservableCollection <RecipeIngredientViewModel> loadIngredients()
{
_ingredients = new ObservableCollection <RecipeIngredientViewModel>();
foreach (var menuItem in this)
{
int portion = menuItem.Portion;
foreach (var ingredient in menuItem.Recipe.Ingredients)
{
var previous = _ingredients.FirstOrDefault(x => x.IngredientId.Equals(ingredient.IngredientId));
if (previous != null)
{
previous.Quantity += portion * ingredient.Quantity;
}
else
{
RecipeIngredientViewModel newIngredient = new RecipeIngredientViewModel(ingredient, portion);
_ingredients.Add(newIngredient);
}
}
}
return(_ingredients);
}