Join Kevin Skoglund for an in-depth discussion in this video Read action: Show, part of Ruby on Rails 3 Essential Training.
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In this movie, we'll learn to implement the show action that makes up the read…portion of CRUD in our controllers.…As we saw earlier, reading records from the database is typically handled by two Rails actions:…list and show, and in the last movie, we saw how to implement list to return a…list of records. In that list, we had a link that we have clicked that would…take us to the show action and the Show template.…Now we need to see to put that in place.…One thing that's different about show from list is that show is going to require…an id and the id must exist in the database.…
Otherwise Rails would return a record not found error and that makes sense.…We can't very well view a record and view its detail page if we don't have a…valid id for it, but you'll just want to keep that point in mind, that whenever…we're going to view a record, we need to have the id of that record as a…starting point, so that we can go to the database and look it up.…Let's switch back to our application.…Now I'm also switch up my work environment a little bit here because I'm using TextMate.…
- 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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