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. the three "magic columns" are:id - _______ - updated_at
rake db:migrate
nested classes
created_at
<=> operator

2. Rails' application framework
ActiveRecord
render :partial
ActionPack
.:format

3. Unlike regular erb files partials' names begin with an ________
:controller
ruby make
underscore
an object-relational mapping library

4. a RESTful application uses ... to define an interaction with the data.
HTTP methods (post - get - put - delete)
runs its validators
#{1+1}
the class

5. These create namespaces
the class
always public
Modules
nested classes

6. Kinds of test you create yourself
.:format
production
HTTP methods (post - get - put - delete)
integration test

7. h in in <%=h ... %> is a ______ that escapes special characters to sanitize malicious input
helper method
render :partial
underscore
.:format

8. Methods by default are ________
rake db:migrate
public
rake db:migrate
plural

9. to create a migration that adds a "phone" field to the "tickets" table
rake db:migrate
puts ?x where x is the character (not variable)
rails generate migration AddPhoneToTickets phone:string
integration test

10. Allows instance variables to be accessible outside the class by defining = operators for variables
integration test
a responder object
attr_accessor
render :partial

11. All constants are _______
a responder object
production
always public
data migration (db/migrate/..._create_something.rb)

12. controller (and table) names are _______
ruby make
.:format
plural
rake db:migrate

13. to get character from ascii value
polymorphism
ActiveRecord
puts 12.chr
public

14. Default Rails environments: development - test - ________
the class
production
public
data migration (db/migrate/..._create_something.rb)

15. to call a partial
render :partial
puts ?x where x is the character (not variable)
CamelCase
HTTP methods (post - get - put - delete)

16. A search form is not associated with a ______
puts 12.chr
model
<%= yield %>
underscores

17. You add the filter code right after the line introducing __________ in the controller
the class
Modules
the word "private"
underscore

18. to run the latest migrations
underscore
rake db:migrate
migration
config/routes.rb

19. to destroy a row with id of 2 using only one line...
Tweet.find(2).destroy
singular
puts 12.chr
data migration (db/migrate/..._create_something.rb)

20. Rails' object-relational mapping library
RAILS_ENV (RAILS_ENV=production)
Tweet.find(2).destroy
ActiveRecord
public

21. to run the latest migrations
#{1+1}
rake db:migrate
Modules
integration test

22. Long form of "rake" which can do more complex things like modifying the database structure and running testsis
plural
ruby make
#{1+1}
put a $ sign in front. For example $x

23. A special class whose only job is to have attributes and to hold data
integration
Structs
config/routes.rb
CamelCase

24. to get ascii value of a character
puts ?x where x is the character (not variable)
config/routes.rb
underscores
public

25. to specify a format like html or xml in routes.rb
.:format
rails generate migration AddPhoneToTickets phone:string
validates_numericality_of
Structs

26. This is a comparison operator
rake db:migrate
<=> operator
data migration (db/migrate/..._create_something.rb)
replace the word "scaffold" with the word "model"

27. a RESTful application uses ... to define an interaction with the data.
rails generate migration AddPhoneToTickets phone:string
singular
HTTP methods (post - get - put - delete)
underscore

28. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
the page template
helper method
<=> operator
f.error_messages

29. All constants are _______
always public
polymorphism
Tweet.find(2).destroy
rake db:migrate

30. to add an error (called "there was an error") in the validate method
errors.add_to_base("there was an error")
the word "private"
ruby make
rails generate migration AddPhoneToTickets phone:string

31. This method name indicates to rails that it should validate before saving/updating
created_at
errors.add_to_base("there was an error")
validate
always public

32. Converts database records to objects
#{1+1}
helper method
an object-relational mapping library
ruby make

33. This method name indicates to rails that it should validate before saving/updating
:controller
<% form_for() %>
validate
nested classes

34. expression that all layouts have
puts ?x where x is the character (not variable)
<%= yield %>
ActionPack
render :partial

35. to create a migration that adds a "phone" field to the "tickets" table
validate
rails generate migration AddPhoneToTickets phone:string
helper method
.:format

36. A search form is not associated with a ______
integration test
runs its validators
.:format
model

37. The three kinds of tests are: unit and functional and _________ tests
ActionPack
migration
include modulename
integration

38. to include a module inside another class/file
include modulename
migration
the page template
errors.add_to_base("there was an error")

39. These create namespaces
Modules
plural
ruby make
created_at

40. to generate regular model code (not scaffolding)
<=> operator
replace the word "scaffold" with the word "model"
integration
errors.add_to_base("there was an error")

41. Rails' application framework
production
underscores
singular
ActionPack

42. Command to run a migration
plural
rake db:migrate
<=> operator
puts ?x where x is the character (not variable)

43. tag that starts a form
<% form_for() %>
Structs
RAILS_ENV (RAILS_ENV=production)
migration

44. to add an error (called "there was an error") in the validate method
puts ?x where x is the character (not variable)
errors.add_to_base("there was an error")
include modulename
HTTP methods (post - get - put - delete)

45. express error messages in a form (do |f|)
f.error_messages
Tweet.find(2).destroy
render :partial
Modules

46. to insert "1 + 1" into a string
rake db:migrate
put a $ sign in front. For example $x
render :partial
#{1+1}

47. This variable changes the environment
<% form_for() %>
underscore
RAILS_ENV (RAILS_ENV=production)
the class

48. Before it saves or updates data a model object _______
Embedded Ruby (ERb)
runs its validators
puts 12.chr
ActiveRecord

49. It generates web pages from page templates
:controller
migration
always public
Embedded Ruby (ERb)

50. Methods by default are ________
replace the word "scaffold" with the word "model"
the word "private"
public
an object-relational mapping library