Recipe App is a rails application that keeps track of all your recipes and ingredients creates recipes and generates a shopping list based on what you have and what they are missing on a recipe. You can also make your favorite recipes public.
Show the list of food that is missing for all recipes of the logged-in user (compare the list of food for all recipes with the general food list of that user)
Count the total food items and total price of the missing food
General shopping list view should: