Join Kevin Skoglund for an in-depth discussion in this video Updating records, part of Ruby on Rails 4 Essential Training.
…In the last movie we learned to create records using Active Record.…In this movie we'll learn to update those records.…Like creating record there are two techniques for updating records.…One where you set the attributes one at a time and then…save and one where you hit the attributes and save all at once.…The first is the Find/save.…So, we're going to find the record, set all the values for…the attributes that we want them to be, and then save it.…Very similar to what we had for New Save.…The second version is going to be find and then update the attributes.…
We're still going to need to find the…record before we can do any updating to it.…Then, we'll set the values and save it all in…one step, by using an active record method called Update_Attributes.…We'll pass in a hash of values to it just like we did for Create.…Let's go to the console and try both of these out.…If you're still in the console, from the last movie, that's fine.…There's no need to exit and go back again.…If not, you'll just type Rails console, and you'll be inside your Rails console.…
- 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 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
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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