Join Kevin Skoglund for an in-depth discussion in this video Delete actions: Delete/destroy, part of Ruby on Rails 3 Essential Training.
Now that we've seen how to create, read, and update records from the controller,…the last part of CRUD is going to be delete.…We'll see how to add that to the controller in this movie.…You'll remember that delete can be defined by two standard Rails actions.…Delete and destroy.…Like the other form actions we've seen, delete displays a form and destroy…processes that form.…There are couple of other key points you need to be aware of.…Delete also is going to want to always have an ID value.…Of course, it makes sense that we can't destroy a record in the database if we can't find it.…We need to have something that will allow us to reference the record that we want.…
And when it processes the form, destroy is going to use the find and then the…destroy method on it.…One footnote is that back in the active record section, you'll remember that…there's also a method called delete.…We want to make sure that we're using destroy.…But into the destroy action, we call the destroy method on the instance that…
- 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
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.Cancel
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.