/**
* removes given ingredient.
*
* @param ingredient
*/
public static void remove(Long id) {
Ingredient i = find.byId(id);
if (i.shoppingLists.isEmpty()) {
i.delete();
} else {
// TODO: add an obsolete-attribute, which could be manipulated here?
throw new RuokalistaException("Ingredient is already referenced from shopping lists.");
}
}
/**
* Saves an ingredient. Before that, it's attached to a recipe.
*
* @param recipe
* @param ingredient
*/
public static Ingredient saveToRecipe(Long recipe, Ingredient ingredient) {
Recipe r = Recipe.findById(recipe);
if (r == null) {
throw new RuokalistaException("Recipe not found.");
}
ingredient.recipe = r;
save(ingredient);
return ingredient;
}
/**
* Saves given ingredient.
*
* @param ingredient
*/
public static void save(Ingredient ingredient) {
ingredient.save();
}