Using whatever resources you like (e.g., Google, Stack Overflow, lectures, labs, notes, etc.), answer the following questions.

1. Write the command to create a new Rails application in API mode with a Postgresql database.

2. What are 5 other options that can be passed in to the rails new command and what do they do?

3. What one line of code can be put into routes.rb to get all the RESTful routes for a given resource (e.g., dogs)?

4. In the context of API development, what is versioning? How do we implement versioning in a Rails API?

5. What is serialization in reference to a Rails API?

6. Imagine a dog walking domain in which a walker has many dogs. Write the index action from the WalkersController. Remember, your endpoint should return JSON.

7. Change the code from the question above so that the walkers' dogs get embedded in the JSON being returned from the index endpoint.

8. Again, change the code above to exclude the timestamps from the data being returned in the JSON.

9. What does CORS mean? Why do we have to think about it when making an API?

10. What changes do we have to make in our application to allow CORS?

11. In our dog walking app, what needs to be added to the following class to allow method calls like Dog.create(name: "Neikko", breed: "mostly rat", age: 13) and Dog.find_by(name: "Neikko") to function properly?

class Dog < ApplicationRecord
end