Join Kevin Skoglund for an in-depth discussion in this video Errors in the development environment, part of Ruby on Rails 3 Essential Training.
Bugs and errors are a fact of life in programming. There is no way around them.…But in this chapter we'll look at tools and techniques to be able to work through them.…Of course most bugs happen during development, and in development errors show…up in three places.…In the browser, in the Rails Server console or the WEBrick console that we…launch from the command line, and the application log files.…Let's create some errors in our demo_controller and then take a look at all…three of these to see the differences.…So I'm going to open up the demo_ controller right here, and I am going to…create a new method.…
I'm just going to paste in called make_ error and in it I'm going to put code…for what are my guesses for the 3 most common errors.…I've got them all commented out just so that we can look at them one at a time.…The first one is a syntax error.…I don't have a closing parenthesis here.…I should have a parenthesis and I don't.…That's very common mistake is not to close something that you ought to.…
- Understanding MVC (Model View Controller ) architecture
- Routing browser requests through the framework
- Responding to requests with dynamic content
- Defining associations and database relationships
- Creating, reading, updating and deleting records
- Working with forms
- Validating form data
- Reviewing built-in security features
- Authenticating users and managing user access
- Debugging and error handling
Skill Level Beginner
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
12. Data Validation
13. User Authentication
14. Improving the Simple CMS
15. Debugging and Error Handling
16. Introducing More Advanced Topics
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