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 _______
Embedded Ruby (ERb)
runs its validators
#{1+1}
config/routes.rb

2. to include a module inside another class/file
include modulename
data migration (db/migrate/..._create_something.rb)
config/routes.rb
errors.add_to_base("there was an error")

3. the concept of writing code that can work with objects of multiple types and classes at once
public
the class
singular
polymorphism

4. to add an error (called "there was an error") in the validate method
errors.add_to_base("there was an error")
rake db:migrate
model
created_at

5. Rails' application framework
#{1+1}
ActionPack
public
<%= yield %>

6. You add the filter code right after the line introducing __________ in the controller
data migration (db/migrate/..._create_something.rb)
Modules
integration
the class

7. It generates web pages from page templates
ActiveRecord
Embedded Ruby (ERb)
RAILS_ENV (RAILS_ENV=production)
validate

8. h in in <%=h ... %> is a ______ that escapes special characters to sanitize malicious input
HTTP methods (post - get - put - delete)
helper method
the class
ruby make

9. The "format" in "repond_to do |format|"? is a ______
.:format
always public
a responder object
replace the word "scaffold" with the word "model"

10. to declare global variables
rake db:migrate
runs its validators
Modules
put a $ sign in front. For example $x

11. A script that alters the structure of the underlying database
.:format
<=> operator
migration
<=> operator

12. Kinds of test you create yourself
integration test
always public
config/routes.rb
Modules

13. models have only ______names
singular
<% form_for() %>
rails generate migration AddPhoneToTickets phone:string
runs its validators

14. Converts database records to objects
singular
CamelCase
an object-relational mapping library
:controller

15. Command to run a migration
rake db:migrate
validate
replace the word "scaffold" with the word "model"
puts ?x where x is the character (not variable)

16. Unlike regular erb files partials' names begin with an ________
always public
underscore
created_at
rails generate migration AddPhoneToTickets phone:string

17. Long form of "rake" which can do more complex things like modifying the database structure and running testsis
ruby make
attr_accessor
public
f.error_messages

18. The "format" in "repond_to do |format|"? is a ______
replace the word "scaffold" with the word "model"
production
<%= yield %>
a responder object

19. You add the filter code right after the line introducing __________ in the controller
rake db:migrate
created_at
validates_numericality_of
the class

20. Rails' application framework
Structs
ActionPack
ruby make
polymorphism

21. This method name indicates to rails that it should validate before saving/updating
puts 12.chr
always public
ActiveRecord
validate

22. to call a partial
the word "private"
#{1+1}
render :partial
config/routes.rb

23. declaring classes inside another class
data migration (db/migrate/..._create_something.rb)
validates_numericality_of
nested classes
f.error_messages

24. This variable changes the environment
ruby make
underscores
RAILS_ENV (RAILS_ENV=production)
the class

25. A script that alters the structure of the underlying database
integration
RAILS_ENV (RAILS_ENV=production)
Modules
migration

26. Default Rails environments: development - test - ________
<%= yield %>
<=> operator
RAILS_ENV (RAILS_ENV=production)
production

27. Kinds of test you create yourself
the class
errors.add_to_base("there was an error")
integration test
render :partial

28. to run the latest migrations
rake db:migrate
data migration (db/migrate/..._create_something.rb)
Tweet.find(2).destroy
integration

29. Command to run a migration
:controller
rake db:migrate
underscores
<% form_for() %>

30. These create namespaces
Modules
put a $ sign in front. For example $x
always public
runs its validators

31. a RESTful application uses ... to define an interaction with the data.
attr_accessor
rake db:migrate
HTTP methods (post - get - put - delete)
ruby make

32. to run the latest migrations
ActionPack
rake db:migrate
rails generate migration AddPhoneToTickets phone:string
model

33. express error messages in a form (do |f|)
the page template
f.error_messages
production
underscore

34. declaring classes inside another class
<% form_for() %>
config/routes.rb
nested classes
underscore

35. These create namespaces
Modules
rails generate migration AddPhoneToTickets phone:string
config/routes.rb
the class

36. It generates web pages from page templates
Embedded Ruby (ERb)
<% form_for() %>
ActiveRecord
<=> operator

37. to get character from ascii value
created_at
puts 12.chr
errors.add_to_base("there was an error")
integration test

38. Naming convention for file names
public
helper method
underscores
errors.add_to_base("there was an error")

39. Before it saves or updates data a model object _______
replace the word "scaffold" with the word "model"
runs its validators
puts 12.chr
RAILS_ENV (RAILS_ENV=production)

40. Naming convention for file names
config/routes.rb
underscores
CamelCase
production

41. express error messages in a form (do |f|)
Tweet.find(2).destroy
attr_accessor
<%= yield %>
f.error_messages

42. a RESTful application uses ... to define an interaction with the data.
<%= yield %>
plural
HTTP methods (post - get - put - delete)
validate

43. to insert "1 + 1" into a string
model
data migration (db/migrate/..._create_something.rb)
#{1+1}
integration test

44. expression that all layouts have
#{1+1}
plural
<%= yield %>
the page template

45. This is a comparison operator
ActionPack
replace the word "scaffold" with the word "model"
<=> operator
underscore

46. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
config/routes.rb
rails generate migration AddPhoneToTickets phone:string
the page template
created_at

47. Default Rails environments: development - test - ________
production
nested classes
integration test
rake db:migrate

48. to check if an input is numeric
a responder object
validates_numericality_of
integration test
rake db:migrate

49. This method name indicates to rails that it should validate before saving/updating
nested classes
f.error_messages
config/routes.rb
validate

50. to specify a format like html or xml in routes.rb
rake db:migrate
production
model
.:format