UPenn on Rails pt 1

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  • UPenn on Rails pt 1

    1. 1. UPenn on Rails Lesson 1: Data and Views
    2. 2. DataViews
    3. 3. Data
    4. 4. class Team• name• (id, created_at, updated_at)
    5. 5. class Location• name• address• (id, created_at, updated_at)
    6. 6. class Game• starts_at• ends_at• location• home_team• away_team• (id, created_at, updated_at)
    7. 7. class Game• starts_at• ends_at class Location• location• home_team• away_team• (id, created_at, updated_at)
    8. 8. class Game• starts_at• ends_at class Location• location• home_team class Team• away_team• (id, created_at, updated_at)
    9. 9. CODE!
    10. 10. Database Migrations• live in db/migrate• ordered• Abstracted SQL column types• includes id and timestamps by default
    11. 11. MORE CODE!
    12. 12. RESTful Routes• GET /locations (show all locations)• GET /locations/3 (show one location)• POST /locations (make a location)• PUT /locations/3 (update one location)
    13. 13. Can also be nested• GET /locations/3/games (show games for one location)
    14. 14. ‘public’ folder• For all static files• Rails looks here first• Offers caching options
    15. 15. Views
    16. 16. ERB• Like JSP/ASP, but in ruby• lots of helper functions for forms, etc.• layout → view → partials
    17. 17. VIEW CODE!
    18. 18. ActiveRecord Associations• 1 to 1 (belongs_to - has_one)• 1 to many (belongs_to - has_many)• many to many (has_many :through)
    19. 19. Other points• Controllers• Next class: User stories and testing!
    20. 20. Homework• Make a Player scaffold• Show the players for a given team on that team’s page• (bonus) assign players on the team edit page• Help at http://railsforzombies.org/

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