An application that needs debugging can be a frustrating experience, but it's also one that helps you learn and understand your application better. The process of debugging initially involves isolating where the problem is before you can actually begin to fix the problem. In this video, you'll take a look at some of the debugging techniques you can use in Ruby on Rails 4.
…In this movie I want to talk about a couple of techniques that…you can use to help you when you're trying to debug your application.…The first is to break your problems into pieces.…The first step in solving a problem is identifying what the…problem is and figuring out where in your code that problem lies.…Then you can set about in actually solving it.…One of the best ways to do that is to…try and isolate the problem by testing the intermediary steps.…If performing A, B, C and D breaks then try…testing a first and see if it works as expected.…
Then add B to it and try A and be and then A, B and C together.…If all of those work then you know your problem is in D.…Or if you get a failure some where along the line.…You'll be able to zero in and locate the problem.…In Rails, that may mean checking to make sure…that your database query is correct, then checking your…model, make sure everything in your model works, then…looking at your controller, and finally looking at the view.…If you're performing an action that's redirecting to another…
- Why use Ruby on Rails?
- Installing Ruby on Rails on Mac and Windows
- Rendering templates and redirecting requests
- Generating and running database migrations
- Creating, updating, and deleting records
- Understanding association types
- Using layouts, partials, and view helpers
- Incorporating assets using asset pipeline
- Validating form data
- Authenticating users and managing user access
- Architecting RESTful applications
- Debugging and error handing
Skill Level Intermediate
1. What Is Ruby on Rails?
2. Installing Ruby on Rails on a Mac
3. Installing Ruby on Rails on a Windows Machine
4. Getting Started
5. Controllers, Views, and Dynamic Content
6. Databases and Migrations
7. Models, ActiveRecord, and ActiveRelation
9. Controllers and CRUD
10. Layouts, Partials, and View Helpers
13. Data Validation
14. User Authentication
15. Improving the Simple CMS
16. REST and RESTful Routes
17. Debugging and Error Handling
18. Introducing More Advanced Topics
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