Topics:

• Databases
• MongoDB
• ORMs
• Mongoose
• Create/Read/Update/Delete operations

You'll write a server that lets you create and read Bears through MongoDB. Much of the knowledge from Node and Express will carry over to this mini project, where you'll interface with a database in your route handlers.

• Install MongoDB.
• cd into your project directory.
• Run npm install to download the dependencies.
• Run mongod --dbpath data and keep it running in a separate terminal.
• Write your implementation, as per the instructions below.
• To test your application at any point, run npm start to start the server. Then, you can make requests to http://localhost:3000 in Postman or in your browser! To make POST requests, you'll need to use Postman. Craft the correct requests to test your implementation!

Create a schema for the Bears collection. A schema is a description of the format of documents within a collection. In this case, each Bear is a document of the form:

{
  species: "American Black Bear",
  latinName: "Ursus americanus",
  createdAt: Mon Aug 14 2017 12:50:16 GMT-0700 (PDT)
}

In models.js, write the schema for the Bears collection. Make the field createdAt default to the current date.

When the client makes a POST request to /bears:

• Ensure the client passes species and latinName parameters in the request body. If there's an error, respond with an appropriate status code, and send a JSON response of the form { error: "Some useful error message" }.

• Create and save a new Bear document. If there's an error while saving, send that error as a JSON response, and set the status code to STATUS_SERVER_ERROR (Internal Server Error).

• Otherwise, if everything is successful, send the Bear document as a JSON response.

When the client makes a GET request to /bears, read all the Bear documents from MongoDB as an array. Send that array as a JSON response to the client.

If there's an error in retrieving the documents, send that error to the client in a JSON response. Set the status code to STATUS_SERVER_ERROR (Internal Server Error), as the server couldn't fetch the documents for some reason.

When the client makes a GET request to /bears/:id (remember, :id is a parameter embedded in the URL, not in the query-string):

• Find the Bear document associated with the given id. If there's an error, send that error as a JSON response, and set the status code to STATUS_SERVER_ERROR (Internal Server Error).

• Otherwise, if everything is successful, send the Bear document as a JSON response.