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. Naming convention for classes
RAILS_ENV (RAILS_ENV=production)
nested classes
CamelCase
RAILS_ENV (RAILS_ENV=production)

2. to run the latest migrations
attr_accessor
underscores
rake db:migrate
Tweet.find(2).destroy

3. Naming convention for file names
ruby make
include modulename
underscores
ActiveRecord

4. h in in <%=h ... %> is a ______ that escapes special characters to sanitize malicious input
rake db:migrate
plural
the page template
helper method

5. Allows instance variables to be accessible outside the class by defining = operators for variables
attr_accessor
Structs
helper method
HTTP methods (post - get - put - delete)

6. to declare global variables
config/routes.rb
put a $ sign in front. For example $x
include modulename
attr_accessor

7. declaring classes inside another class
nested classes
put a $ sign in front. For example $x
rake db:migrate
<%= yield %>

8. edit routes
attr_accessor
config/routes.rb
underscore
plural

9. Long form of "rake" which can do more complex things like modifying the database structure and running testsis
ruby make
integration
<% form_for() %>
integration test

10. It generates web pages from page templates
render :partial
<%= yield %>
Embedded Ruby (ERb)
an object-relational mapping library

11. the concept of writing code that can work with objects of multiple types and classes at once
attr_accessor
polymorphism
CamelCase
puts ?x where x is the character (not variable)

12. Unlike regular erb files partials' names begin with an ________
replace the word "scaffold" with the word "model"
Embedded Ruby (ERb)
<=> operator
underscore

13. to declare global variables
production
#{1+1}
put a $ sign in front. For example $x
.:format

14. A special class whose only job is to have attributes and to hold data
the class
config/routes.rb
Structs
migration

15. Long form of "rake" which can do more complex things like modifying the database structure and running testsis
validate
singular
ruby make
RAILS_ENV (RAILS_ENV=production)

16. Converts database records to objects
render :partial
puts ?x where x is the character (not variable)
plural
an object-relational mapping library

17. express error messages in a form (do |f|)
public
f.error_messages
the page template
#{1+1}

18. expression that all layouts have
include modulename
the word "private"
<%= yield %>
#{1+1}

19. the second uri indicate
:controller
puts ?x where x is the character (not variable)
render :partial
puts 12.chr

20. This variable changes the environment
the word "private"
RAILS_ENV (RAILS_ENV=production)
data migration (db/migrate/..._create_something.rb)
replace the word "scaffold" with the word "model"

21. You add the filter code right after the line introducing __________ in the controller
the class
always public
puts ?x where x is the character (not variable)
CamelCase

22. Command to run a migration
underscore
rake db:migrate
helper method
migration

23. This precedes the "check_logged_in" method in a class
the word "private"
plural
config/routes.rb
Modules

24. to generate regular model code (not scaffolding)
rake db:migrate
replace the word "scaffold" with the word "model"
nested classes
nested classes

25. All constants are _______
HTTP methods (post - get - put - delete)
always public
ActiveRecord
<% form_for() %>

26. expression that all layouts have
model
integration
HTTP methods (post - get - put - delete)
<%= yield %>

27. Naming convention for classes
integration
plural
always public
CamelCase

28. the three "magic columns" are:id - _______ - updated_at
attr_accessor
rake db:migrate
public
created_at

29. the three "magic columns" are:id - _______ - updated_at
created_at
Tweet.find(2).destroy
production
plural

30. to run the latest migrations
rake db:migrate
a responder object
Modules
puts ?x where x is the character (not variable)

31. to get character from ascii value
validate
rake db:migrate
<% form_for() %>
puts 12.chr

32. A script that alters the structure of the underlying database
#{1+1}
validate
include modulename
migration

33. express error messages in a form (do |f|)
model
public
RAILS_ENV (RAILS_ENV=production)
f.error_messages

34. a RESTful application uses ... to define an interaction with the data.
HTTP methods (post - get - put - delete)
Tweet.find(2).destroy
ruby make
integration test

35. A script that alters the structure of the underlying database
migration
errors.add_to_base("there was an error")
rake db:migrate
integration test

36. to destroy a row with id of 2 using only one line...
puts 12.chr
Tweet.find(2).destroy
underscore
integration test

37. to destroy a row with id of 2 using only one line...
HTTP methods (post - get - put - delete)
rake db:migrate
a responder object
Tweet.find(2).destroy

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

39. These create namespaces
Modules
replace the word "scaffold" with the word "model"
Tweet.find(2).destroy
:controller

40. It generates web pages from page templates
Embedded Ruby (ERb)
rails generate migration AddPhoneToTickets phone:string
put a $ sign in front. For example $x
a responder object

41. The three kinds of tests are: unit and functional and _________ tests
replace the word "scaffold" with the word "model"
integration
nested classes
rake db:migrate

42. to generate regular model code (not scaffolding)
put a $ sign in front. For example $x
replace the word "scaffold" with the word "model"
Structs
polymorphism

43. All constants are _______
model
always public
ActiveRecord
singular

44. edit routes
rake db:migrate
ruby make
puts ?x where x is the character (not variable)
config/routes.rb

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

46. to get ascii value of a character
puts ?x where x is the character (not variable)
a responder object
validates_numericality_of
ActiveRecord

47. The "format" in "repond_to do |format|"? is a ______
an object-relational mapping library
CamelCase
a responder object
model

48. Command to run a migration
rake db:migrate
the class
HTTP methods (post - get - put - delete)
plural

49. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
integration
the page template
include modulename
:controller

50. to call a partial
model
replace the word "scaffold" with the word "model"
underscores
render :partial