Part 1 of 6

1. Building Web Apps with Rails

2. Hello

6. What about you?

7. The Course

8. Hello Ruby!
Hello Rails

9. Try Ruby!
Http://tryruby.org
Stop when you see
"summary 4" or stuff
about file operations.
Skip to challenge on
Classes.

10. Ruby, Ruby, Ruby
● Everything is an object
● Chain methods to your heart's content
●
Bang! Or no bang?
● Hashes and :symbols
● Key value pairs :key => 'value'
●
Blocks { } / do end
● @instance variables

11. A Ruby Class

12. Our app: FirstFM

13. FirstFM
Users StationLists Stations

14. FirstFM
Users StationLists Stations

15. Let's get going
rails new firstfm
rails generate scaffold Station name:string
description:text url:string
cd firstfm
rake db:migrate
rails server

16. What? How did this happen?

17. Rails has generated
●
Application defaults, files and settings
●
A model to represent the 'Station' entity
●
A database table to store stations
●
A controller to respond to requests
●
Views to show them

18. Rails has generated
●
Application defaults, files and settings
●
A model to represent the 'Station' entity
rails new firstfm
●
A database table to store stations
●
A controller to respond to requests
●
Views to show them

19. Rails has generated
●
Application defaults, files and settings
●
A model to represent the 'Station' entity
●
A database table to store stations
●
A controller to respond to requests
●
Views to show them
rails generate scaffold Station name:string
description:text url:string

20. Rails has generated
●
Application defaults, files and settings
●
A model to represent the 'Station' entity
●
A database table to store stations
●
A controller to respond to requests
●
Views to show them
rake db:migrate

21. EVERYONE IS
ENTITLED TO MY
OPINION

22. EVERYONE IS
Convention
ENTITLED over TO MY
Configuration
OPINION

23. EVERYONE IS
Convention
over
ENTITLED TO MY
Configuration
(Not loved by all...)
OPINION

24. rake db:migrate
How does it work?
In your app directory, navigate to:
db/migrate/

25. The Station Migration

26. The Station Model

27. The Stations Controller

28. CRUD actions in the controller
●
Create – new, create
● Read – index, show
● Update – edit, update
●
Destroy - destroy

29. The 'Show' Action (Controller)
# GET /stations/1
# GET /stations/1.json
def show
@station = Station.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: @station }
end
end

30. The 'Show' Action (View)
Action / View name convention