In this episode, we're making our book updating feature come to life! First, we spruce up the UI by fixing the 'My Books' link and adding an 'Edit' link for each book so users can actually get to the update page. Once that's set up, we start focusing on the backend to make sure everything works smoothly and securely.
We dive straight into test-driven development: writing tests to ensure only the book's owner can edit it, checking that all the necessary info (like title and author) is validated, and making sure the status updates as expected. We also cover the scenarios for when the book doesn't exist or when the wrong user tries to make changes—making sure our app is protected from accidental or unwanted updates.
After the groundwork with tests, we implement the update logic in the controller, updating both the book info and the pivot table that tracks reading status. Step by step, we run the tests, watch them fail, then update our code until everything passes. By the end, we have a fully working book update flow!
In short, this episode is all about building out the book editing functionality, writing comprehensive tests to cover all edge cases, making sure only the right users can update their own books, and ensuring our database stays in sync with the UI. Next up, we'll do some refactoring to clean up the code and keep our app solid.