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. controller (and table) names are _______
<=> operator
polymorphism
rails generate migration AddPhoneToTickets phone:string
plural

2. Converts database records to objects
config/routes.rb
nested classes
HTTP methods (post - get - put - delete)
an object-relational mapping library

3. to declare global variables
put a $ sign in front. For example $x
ActiveRecord
puts ?x where x is the character (not variable)
puts 12.chr

4. The "format" in "repond_to do |format|"? is a ______
a responder object
ruby make
rails generate migration AddPhoneToTickets phone:string
always public

5. Rails' object-relational mapping library
ActiveRecord
model
#{1+1}
Modules

6. edit routes
config/routes.rb
polymorphism
always public
validate

7. You add the filter code right after the line introducing __________ in the controller
#{1+1}
config/routes.rb
the page template
the class

8. to check if an input is numeric
the word "private"
validates_numericality_of
public
integration

9. declaring classes inside another class
production
public
nested classes
the class

10. A script that alters the structure of the underlying database
runs its validators
HTTP methods (post - get - put - delete)
f.error_messages
migration

11. the model-generator command create the model class (app/models/something.rb) and the ____________
plural
the word "private"
data migration (db/migrate/..._create_something.rb)
polymorphism

12. h in in <%=h ... %> is a ______ that escapes special characters to sanitize malicious input
validates_numericality_of
the word "private"
Modules
helper method

13. It generates web pages from page templates
Embedded Ruby (ERb)
Structs
nested classes
include modulename

14. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
Embedded Ruby (ERb)
Structs
the page template
errors.add_to_base("there was an error")

15. the model-generator command create the model class (app/models/something.rb) and the ____________
rails generate migration AddPhoneToTickets phone:string
data migration (db/migrate/..._create_something.rb)
migration
integration

16. the concept of writing code that can work with objects of multiple types and classes at once
rails generate migration AddPhoneToTickets phone:string
polymorphism
#{1+1}
#{1+1}

17. This variable changes the environment
puts ?x where x is the character (not variable)
include modulename
RAILS_ENV (RAILS_ENV=production)
the class

18. expression that all layouts have
CamelCase
migration
<%= yield %>
Tweet.find(2).destroy

19. declaring classes inside another class
nested classes
<%= yield %>
singular
always public

20. Allows instance variables to be accessible outside the class by defining = operators for variables
put a $ sign in front. For example $x
attr_accessor
put a $ sign in front. For example $x
<=> operator

21. the second uri indicate
underscore
validate
config/routes.rb
:controller

22. the concept of writing code that can work with objects of multiple types and classes at once
f.error_messages
Modules
model
polymorphism

23. to get ascii value of a character
.:format
puts ?x where x is the character (not variable)
rake db:migrate
integration

24. to get character from ascii value
integration test
singular
puts 12.chr
HTTP methods (post - get - put - delete)

25. to insert "1 + 1" into a string
Modules
#{1+1}
render :partial
model

26. express error messages in a form (do |f|)
f.error_messages
nested classes
created_at
helper method

27. This precedes the "check_logged_in" method in a class
attr_accessor
.:format
the word "private"
Tweet.find(2).destroy

28. controller (and table) names are _______
data migration (db/migrate/..._create_something.rb)
the page template
integration
plural

29. a RESTful application uses ... to define an interaction with the data.
plural
the page template
validate
HTTP methods (post - get - put - delete)

30. Unlike regular erb files partials' names begin with an ________
polymorphism
the class
ruby make
underscore

31. Before it saves or updates data a model object _______
polymorphism
runs its validators
integration test
replace the word "scaffold" with the word "model"

32. This precedes the "check_logged_in" method in a class
data migration (db/migrate/..._create_something.rb)
Modules
production
the word "private"

33. Methods by default are ________
public
ActionPack
include modulename
attr_accessor

34. This method name indicates to rails that it should validate before saving/updating
validate
Embedded Ruby (ERb)
a responder object
runs its validators

35. This method name indicates to rails that it should validate before saving/updating
integration
.:format
validate
always public

36. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
puts 12.chr
the page template
singular
<=> operator

37. to create a migration that adds a "phone" field to the "tickets" table
Tweet.find(2).destroy
a responder object
put a $ sign in front. For example $x
rails generate migration AddPhoneToTickets phone:string

38. to get character from ascii value
nested classes
puts 12.chr
rake db:migrate
HTTP methods (post - get - put - delete)

39. models have only ______names
singular
a responder object
ActionPack
helper method

40. to run the latest migrations
Tweet.find(2).destroy
nested classes
rake db:migrate
the word "private"

41. Naming convention for classes
polymorphism
attr_accessor
always public
CamelCase

42. edit routes
include modulename
config/routes.rb
integration test
an object-relational mapping library

43. This is a comparison operator
<=> operator
created_at
Modules
<% form_for() %>

44. to get ascii value of a character
the page template
puts ?x where x is the character (not variable)
config/routes.rb
.:format

45. to check if an input is numeric
:controller
validates_numericality_of
validate
always public

46. to declare global variables
Embedded Ruby (ERb)
<=> operator
put a $ sign in front. For example $x
validates_numericality_of

47. tag that starts a form
plural
integration test
integration test
<% form_for() %>

48. a RESTful application uses ... to define an interaction with the data.
HTTP methods (post - get - put - delete)
rake db:migrate
errors.add_to_base("there was an error")
model

49. Kinds of test you create yourself
underscore
integration test
ActionPack
singular

50. All constants are _______
always public
Embedded Ruby (ERb)
validates_numericality_of
rake db:migrate