Test your basic knowledge |

Ruby On Rails Basics

Subject : it-skills

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. to get ascii value of a character
<=> operator
underscore
puts ?x where x is the character (not variable)
nested classes

2. to specify a format like html or xml in routes.rb
CamelCase
.:format
ruby make
puts 12.chr

3. expression that all layouts have
model
the class
f.error_messages
<%= yield %>

4. to include a module inside another class/file
always public
Embedded Ruby (ERb)
include modulename
puts ?x where x is the character (not variable)

5. Rails' application framework
replace the word "scaffold" with the word "model"
ActionPack
include modulename
Embedded Ruby (ERb)

6. the three "magic columns" are:id - _______ - updated_at
underscore
put a $ sign in front. For example $x
polymorphism
created_at

7. Rails' application framework
integration test
Modules
config/routes.rb
ActionPack

8. to generate regular model code (not scaffolding)
replace the word "scaffold" with the word "model"
production
Tweet.find(2).destroy
created_at

9. The three kinds of tests are: unit and functional and _________ tests
<% form_for() %>
Structs
replace the word "scaffold" with the word "model"
integration

10. controller (and table) names are _______
validate
CamelCase
plural
polymorphism

11. to create a migration that adds a "phone" field to the "tickets" table
puts 12.chr
ActionPack
rails generate migration AddPhoneToTickets phone:string
Tweet.find(2).destroy

12. Before it saves or updates data a model object _______
an object-relational mapping library
public
runs its validators
ActiveRecord

13. Converts database records to objects
:controller
data migration (db/migrate/..._create_something.rb)
.:format
an object-relational mapping library

14. You add the filter code right after the line introducing __________ in the controller
f.error_messages
always public
the class
attr_accessor

15. Methods by default are ________
include modulename
plural
public
always public

16. Command to run a migration
rake db:migrate
runs its validators
put a $ sign in front. For example $x
HTTP methods (post - get - put - delete)

17. to get character from ascii value
puts 12.chr
integration test
the class
config/routes.rb

18. to add an error (called "there was an error") in the validate method
replace the word "scaffold" with the word "model"
HTTP methods (post - get - put - delete)
rails generate migration AddPhoneToTickets phone:string
errors.add_to_base("there was an error")

19. A special class whose only job is to have attributes and to hold data
data migration (db/migrate/..._create_something.rb)
runs its validators
f.error_messages
Structs

20. Allows instance variables to be accessible outside the class by defining = operators for variables
model
attr_accessor
validate
underscore

21. This variable changes the environment
always public
the word "private"
integration test
RAILS_ENV (RAILS_ENV=production)

22. This is a comparison operator
<=> operator
created_at
model
the page template

23. to get character from ascii value
puts 12.chr
ruby make
a responder object
Tweet.find(2).destroy

24. This precedes the "check_logged_in" method in a class
config/routes.rb
the word "private"
always public
always public

25. Default Rails environments: development - test - ________
validate
migration
errors.add_to_base("there was an error")
production

26. to run the latest migrations
nested classes
<%= yield %>
rake db:migrate
data migration (db/migrate/..._create_something.rb)

27. Unlike regular erb files partials' names begin with an ________
always public
underscore
public
the class

28. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
underscore
the page template
ActiveRecord
model

29. to create a migration that adds a "phone" field to the "tickets" table
the class
integration
rails generate migration AddPhoneToTickets phone:string
the page template

30. tag that starts a form
<% form_for() %>
always public
nested classes
<%= yield %>

31. Kinds of test you create yourself
integration test
<%= yield %>
ruby make
rake db:migrate

32. Converts database records to objects
put a $ sign in front. For example $x
underscore
an object-relational mapping library
the class

33. to get ascii value of a character
replace the word "scaffold" with the word "model"
validate
puts ?x where x is the character (not variable)
singular

34. to check if an input is numeric
<%= yield %>
HTTP methods (post - get - put - delete)
ActionPack
validates_numericality_of

35. declaring classes inside another class
render :partial
data migration (db/migrate/..._create_something.rb)
nested classes
singular

36. to declare global variables
plural
rake db:migrate
put a $ sign in front. For example $x
production

37. to specify a format like html or xml in routes.rb
polymorphism
.:format
include modulename
migration

38. to destroy a row with id of 2 using only one line...
render :partial
Tweet.find(2).destroy
integration
include modulename

39. Rails' object-relational mapping library
.:format
the page template
puts 12.chr
ActiveRecord

40. the concept of writing code that can work with objects of multiple types and classes at once
rails generate migration AddPhoneToTickets phone:string
polymorphism
the page template
nested classes

41. A search form is not associated with a ______
model
attr_accessor
runs its validators
validates_numericality_of

42. the concept of writing code that can work with objects of multiple types and classes at once
polymorphism
put a $ sign in front. For example $x
data migration (db/migrate/..._create_something.rb)
Tweet.find(2).destroy

43. models have only ______names
singular
ruby make
helper method
<%= yield %>

44. Long form of "rake" which can do more complex things like modifying the database structure and running testsis
ruby make
migration
validates_numericality_of
integration

45. The three kinds of tests are: unit and functional and _________ tests
integration
underscore
helper method
ruby make

46. edit routes
an object-relational mapping library
ActiveRecord
rake db:migrate
config/routes.rb

47. expression that all layouts have
CamelCase
f.error_messages
<%= yield %>
helper method

48. Kinds of test you create yourself
puts ?x where x is the character (not variable)
always public
nested classes
integration test

49. It generates web pages from page templates
Embedded Ruby (ERb)
f.error_messages
migration
.:format

50. the model-generator command create the model class (app/models/something.rb) and the ____________
plural
data migration (db/migrate/..._create_something.rb)
ruby make
errors.add_to_base("there was an error")