Rails Routing Basics Lab

Learning Goals

• Create a route
• Map a route to a controller/action
• Send JSON data as a response

Introduction

We'll continue building our API for viewing student data. In this lesson, we'll add some routes and controller logic for displaying data about our students.

To get set up, run:

$ bundle install
$ rails db:migrate db:seed

This will download all the dependencies for our app and set up the database.

Instructions

Index Route

• Create a route for making a GET request to /students
• Generate a StudentsController with an index action for handling the route; don't forget to pass the --no test framework argument!
• In the index action, return JSON data representing a list of all students

Grades Route

• Create a route for making a GET request to /students/grades
• Add a grades action in the StudentsController for handling that route
• In the grades action, return JSON data representing a list of all students, ordered by grade from highest to lowest

Bonus: Highest Grade Route

Un-comment out the last test in /spec/requests/students_spec.rb to complete the bonus.

• Create a route for making a GET request to /students/highest-grade
• Add a highest_grade action in the StudentsController for handling that route
• In the highest_grade action, return JSON data representing the one student with the highest grade
• Note: while the other two routes should return an array of data, this route should return just one student object!

Resources

• Rails Routing
• Active Record Query Interface