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

2. Before it saves or updates data a model object _______
replace the word "scaffold" with the word "model"
a responder object
<=> operator
runs its validators

3. Methods by default are ________
<% form_for() %>
render :partial
public
helper method

4. the second uri indicate
RAILS_ENV (RAILS_ENV=production)
:controller
polymorphism
helper method

5. You add the filter code right after the line introducing __________ in the controller
the class
config/routes.rb
HTTP methods (post - get - put - delete)
<%= yield %>

6. Rails' object-relational mapping library
a responder object
ActiveRecord
validate
ruby make

7. to call a partial
#{1+1}
ruby make
render :partial
the page template

8. The three kinds of tests are: unit and functional and _________ tests
a responder object
Modules
integration
an object-relational mapping library

9. A search form is not associated with a ______
puts 12.chr
created_at
replace the word "scaffold" with the word "model"
model

10. Kinds of test you create yourself
integration test
errors.add_to_base("there was an error")
migration
.:format

11. A script that alters the structure of the underlying database
integration
migration
underscores
ActionPack

12. The three kinds of tests are: unit and functional and _________ tests
underscores
polymorphism
nested classes
integration

13. declaring classes inside another class
<=> operator
nested classes
puts ?x where x is the character (not variable)
<%= yield %>

14. the concept of writing code that can work with objects of multiple types and classes at once
polymorphism
include modulename
model
rails generate migration AddPhoneToTickets phone:string

15. to destroy a row with id of 2 using only one line...
Embedded Ruby (ERb)
puts ?x where x is the character (not variable)
Tweet.find(2).destroy
nested classes

16. to declare global variables
the class
HTTP methods (post - get - put - delete)
a responder object
put a $ sign in front. For example $x

17. to check if an input is numeric
RAILS_ENV (RAILS_ENV=production)
f.error_messages
Tweet.find(2).destroy
validates_numericality_of

18. the model-generator command create the model class (app/models/something.rb) and the ____________
data migration (db/migrate/..._create_something.rb)
helper method
.:format
attr_accessor

19. Converts database records to objects
rails generate migration AddPhoneToTickets phone:string
underscores
an object-relational mapping library
:controller

20. to get ascii value of a character
puts ?x where x is the character (not variable)
helper method
validates_numericality_of
Embedded Ruby (ERb)

21. These create namespaces
RAILS_ENV (RAILS_ENV=production)
helper method
created_at
Modules

22. This precedes the "check_logged_in" method in a class
the word "private"
:controller
put a $ sign in front. For example $x
production

23. All constants are _______
always public
Tweet.find(2).destroy
the page template
the page template

24. to add an error (called "there was an error") in the validate method
nested classes
model
:controller
errors.add_to_base("there was an error")

25. Allows instance variables to be accessible outside the class by defining = operators for variables
production
the class
created_at
attr_accessor

26. Allows instance variables to be accessible outside the class by defining = operators for variables
<%= yield %>
rake db:migrate
runs its validators
attr_accessor

27. to generate regular model code (not scaffolding)
singular
replace the word "scaffold" with the word "model"
the class
nested classes

28. to run the latest migrations
rake db:migrate
attr_accessor
puts ?x where x is the character (not variable)
RAILS_ENV (RAILS_ENV=production)

29. to include a module inside another class/file
include modulename
plural
ActiveRecord
rake db:migrate

30. tag that starts a form
<% form_for() %>
RAILS_ENV (RAILS_ENV=production)
CamelCase
<=> operator

31. A special class whose only job is to have attributes and to hold data
plural
puts 12.chr
created_at
Structs

32. a RESTful application uses ... to define an interaction with the data.
ruby make
Tweet.find(2).destroy
HTTP methods (post - get - put - delete)
RAILS_ENV (RAILS_ENV=production)

33. expression that all layouts have
<%= yield %>
attr_accessor
singular
HTTP methods (post - get - put - delete)

34. the model-generator command create the model class (app/models/something.rb) and the ____________
helper method
Embedded Ruby (ERb)
data migration (db/migrate/..._create_something.rb)
puts 12.chr

35. It generates web pages from page templates
runs its validators
the page template
plural
Embedded Ruby (ERb)

36. A script that alters the structure of the underlying database
<% form_for() %>
migration
f.error_messages
:controller

37. to specify a format like html or xml in routes.rb
.:format
model
HTTP methods (post - get - put - delete)
replace the word "scaffold" with the word "model"

38. You add the filter code right after the line introducing __________ in the controller
rake db:migrate
the class
errors.add_to_base("there was an error")
Tweet.find(2).destroy

39. to specify a format like html or xml in routes.rb
Modules
.:format
<=> operator
polymorphism

40. to add an error (called "there was an error") in the validate method
<% form_for() %>
errors.add_to_base("there was an error")
rake db:migrate
.:format

41. to insert "1 + 1" into a string
a responder object
#{1+1}
the class
CamelCase

42. This is a comparison operator
puts 12.chr
model
<=> operator
model

43. a RESTful application uses ... to define an interaction with the data.
render :partial
#{1+1}
validate
HTTP methods (post - get - put - delete)

44. the concept of writing code that can work with objects of multiple types and classes at once
production
a responder object
polymorphism
migration

45. to include a module inside another class/file
Embedded Ruby (ERb)
attr_accessor
include modulename
the word "private"

46. These create namespaces
ruby make
puts 12.chr
replace the word "scaffold" with the word "model"
Modules

47. express error messages in a form (do |f|)
f.error_messages
created_at
runs its validators
<%= yield %>

48. controller (and table) names are _______
HTTP methods (post - get - put - delete)
validate
plural
always public

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

50. controller (and table) names are _______
the word "private"
ActiveRecord
plural
underscore