# 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 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. 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**](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/static) 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 [![paul rudd delivers food](https://camo.githubusercontent.com/ece5d61d7bd3a5ab498b5a1d0ff2f2f82fb9fa18/68747470733a2f2f6d656469612e67697068792e636f6d2f6d656469612f336f7a3878756f7858665862314f4e7573382f67697068792e676966)](https://camo.githubusercontent.com/ece5d61d7bd3a5ab498b5a1d0ff2f2f82fb9fa18/68747470733a2f2f6d656469612e67697068792e636f6d2f6d656469612f336f7a3878756f7858665862314f4e7573382f67697068792e676966) Clone: --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://certil-remy.gitbook.io/learn/javascript/oop/untitled-14.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.