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This coding exercise comes from Upcase, the online learning platform we run. It's part of the Refactoring course and is just one small sample of all the great material available on Upcase, so be sure to visit and check out the rest.
In this exercise, you'll be cleaning up controller called ExpensesController. This controller has a number of responsibilities:
- List out existing expenses for a user
- Filter expenses by amount and approval status
- Create a new expense
- Email an admin after expenses are created
- Change name or amount unapproved expenses
- Mark expenses as deleted
That's quite a bit! Time to slim things down.
To start, you'll want to clone and run the setup script for the repo
git clone [email protected]:thoughtbot-upcase-exercises/cleaning-up-a-controller.git
cd cleaning-up-a-controller
bin/setup
Before you get started, make sure you run ./bin/setup to install gems
and set up your database.
You're going to want to do a few things to the existing controller code:
- All public methods should be as RESTful as possible
- Make sure the only logic that lives in your controller is related to handling your requests and responses
- Apply other techniques from previous exercises and tutorials to clean up this controller as much as possible
Make sure to write tests for any new classes you create during this exercise.
Also, make sure all tests pass before submitting by running rake.
Check out the featured solution branch to see the approach we recommend for this exercise.
If you find yourself stuck, be sure to check out the associated Upcase Forum discussion for this exercise to see what other folks have said.
When you've finished the exercise, head on back to the Refactoring course to find the next exercise, or explore any of the other great content on Upcase.
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