Daily Lunch Lab

Objectives

• Build a domain model with class relations using JavaScript iterator methods
• Use JavaScript to answer questions about data stored in our application
• In this lab, we're using a global store variable to manage application state; it's our frontend 'database'.

Instructions

In this lab, we will be creating a meal delivery service.

The Domain

• A meal has many customers
• A delivery belongs to a meal, belongs to a customer, and belongs to a neighborhood
• A customer has many deliveries
• A customer has many meals through deliveries
• A customer belongs to a neighborhood
• A neighborhood has many deliveries
• A neighborhood has many customers through deliveries
• A neighborhood has many meals through deliveries

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Please note: the tests do not check these methods in order. Some of these methods rely on the relationships between classes to be working already. Use the tests as a guide and refer to this reading if you need more information about what a method is supposed to be doing.

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You will be modeling the following:

Neighborhood class:

• new Neighborhood() - initialized with name. It returns an object that has attributes of id and name
• deliveries() - returns a list of all deliveries placed in a neighborhood
• customers() - returns all of the customers that live in a particular neighborhood
• meals() - returns a unique list of meals that have been ordered in a particular neighborhood (you might want to do this one last)

Customer class:

• new Customer() — should expect to be initialized with a name and a neighborhoodId. It returns an object that has attributes of id, neighborhoodId, and name.
• deliveries() — returns all of the deliveries that customer has received
• meals() - returns all meals that a customer has ordered
• totalSpent() - returns the total amount that the customer has spent on food.

Meal class:

• new Meal() — initialized with title and price. It returns an object that has attributes of title, price, and id. Meal Ids should automatically increment.
• deliveries() - returns all of the deliveries associated with a particular meal.
• customers() - returns all of the customers who have had the meal delivered. Be careful not to return the same customer twice if they have ordered this meal multiple times.
• byPrice() - A class method that orders all meal instances by their price in descending order. Use the static keyword to write a class method.

Delivery class:

• new Delivery() — initialized with mealId, neighborhoodId, and customerId. It returns an object that has attributes of mealId, neighborhoodId, customerId, and id
• meal() - returns the meal associated with a particular delivery
• customer() - returns the customer associated with a particular delivery
• neighborhood() - returns the neighborhood associated with a particular delivery