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. Before it saves or updates data a model object _______
runs its validators
<% form_for() %>
#{1+1}
public

2. edit routes
config/routes.rb
<=> operator
rake db:migrate
Modules

3. Naming convention for classes
.:format
CamelCase
the word "private"
rake db:migrate

4. to specify a format like html or xml in routes.rb
model
.:format
created_at
render :partial

5. to run the latest migrations
public
Embedded Ruby (ERb)
<=> operator
rake db:migrate

6. Rails' object-relational mapping library
created_at
Embedded Ruby (ERb)
ActiveRecord
rake db:migrate

7. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
the page template
polymorphism
HTTP methods (post - get - put - delete)
polymorphism

8. to create a migration that adds a "phone" field to the "tickets" table
errors.add_to_base("there was an error")
rails generate migration AddPhoneToTickets phone:string
render :partial
ruby make

9. Allows instance variables to be accessible outside the class by defining = operators for variables
Tweet.find(2).destroy
attr_accessor
the word "private"
the page template

10. Before it saves or updates data a model object _______
rails generate migration AddPhoneToTickets phone:string
polymorphism
runs its validators
config/routes.rb

11. Unlike regular erb files partials' names begin with an ________
.:format
underscore
integration
public

12. Command to run a migration
rails generate migration AddPhoneToTickets phone:string
attr_accessor
rake db:migrate
Structs

13. to insert "1 + 1" into a string
an object-relational mapping library
Structs
#{1+1}
<=> operator

14. to get ascii value of a character
HTTP methods (post - get - put - delete)
RAILS_ENV (RAILS_ENV=production)
puts ?x where x is the character (not variable)
a responder object

15. the model-generator command create the model class (app/models/something.rb) and the ____________
attr_accessor
data migration (db/migrate/..._create_something.rb)
production
runs its validators

16. A special class whose only job is to have attributes and to hold data
validates_numericality_of
Structs
underscores
include modulename

17. Naming convention for classes
render :partial
puts ?x where x is the character (not variable)
CamelCase
rake db:migrate

18. All constants are _______
a responder object
always public
validates_numericality_of
Structs

19. a RESTful application uses ... to define an interaction with the data.
validates_numericality_of
HTTP methods (post - get - put - delete)
plural
underscores

20. h in in <%=h ... %> is a ______ that escapes special characters to sanitize malicious input
helper method
put a $ sign in front. For example $x
a responder object
nested classes

21. Converts database records to objects
nested classes
the word "private"
ActionPack
an object-relational mapping library

22. Rails' object-relational mapping library
nested classes
ActiveRecord
created_at
<%= yield %>

23. expression that all layouts have
created_at
errors.add_to_base("there was an error")
<%= yield %>
helper method

24. Naming convention for file names
<=> operator
rake db:migrate
model
underscores

25. This method name indicates to rails that it should validate before saving/updating
ruby make
validate
Modules
render :partial

26. to call a partial
errors.add_to_base("there was an error")
Modules
render :partial
Modules

27. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
include modulename
HTTP methods (post - get - put - delete)
the page template
validate

28. to check if an input is numeric
integration
validates_numericality_of
integration test
helper method

29. declaring classes inside another class
migration
nested classes
the word "private"
puts 12.chr

30. to call a partial
nested classes
f.error_messages
:controller
render :partial

31. models have only ______names
:controller
config/routes.rb
the word "private"
singular

32. Rails' application framework
#{1+1}
.:format
:controller
ActionPack

33. a RESTful application uses ... to define an interaction with the data.
the page template
created_at
include modulename
HTTP methods (post - get - put - delete)

34. to check if an input is numeric
the word "private"
put a $ sign in front. For example $x
:controller
validates_numericality_of

35. Default Rails environments: development - test - ________
#{1+1}
ActionPack
production
helper method

36. the second uri indicate
:controller
model
<%= yield %>
underscores

37. You add the filter code right after the line introducing __________ in the controller
runs its validators
the class
nested classes
integration test

38. express error messages in a form (do |f|)
migration
singular
f.error_messages
underscores

39. to destroy a row with id of 2 using only one line...
model
<=> operator
Tweet.find(2).destroy
errors.add_to_base("there was an error")

40. The three kinds of tests are: unit and functional and _________ tests
integration
nested classes
replace the word "scaffold" with the word "model"
config/routes.rb

41. These create namespaces
data migration (db/migrate/..._create_something.rb)
ActionPack
Modules
puts ?x where x is the character (not variable)

42. Converts database records to objects
puts ?x where x is the character (not variable)
puts ?x where x is the character (not variable)
CamelCase
an object-relational mapping library

43. These create namespaces
rails generate migration AddPhoneToTickets phone:string
Modules
production
validate

44. Default Rails environments: development - test - ________
production
replace the word "scaffold" with the word "model"
model
puts 12.chr

45. This variable changes the environment
RAILS_ENV (RAILS_ENV=production)
attr_accessor
polymorphism
ActionPack

46. This method name indicates to rails that it should validate before saving/updating
singular
#{1+1}
the class
validate

47. to run the latest migrations
the class
.:format
data migration (db/migrate/..._create_something.rb)
rake db:migrate

48. Kinds of test you create yourself
<=> operator
integration test
rake db:migrate
migration

49. to add an error (called "there was an error") in the validate method
Modules
ActionPack
errors.add_to_base("there was an error")
include modulename

50. Unlike regular erb files partials' names begin with an ________
created_at
underscore
attr_accessor
production