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. It generates web pages from page templates
rails generate migration AddPhoneToTickets phone:string
Embedded Ruby (ERb)
Structs
:controller

2. to run the latest migrations
the class
plural
rake db:migrate
put a $ sign in front. For example $x

3. to add an error (called "there was an error") in the validate method
integration test
ActiveRecord
singular
errors.add_to_base("there was an error")

4. to destroy a row with id of 2 using only one line...
#{1+1}
created_at
nested classes
Tweet.find(2).destroy

5. the concept of writing code that can work with objects of multiple types and classes at once
an object-relational mapping library
include modulename
f.error_messages
polymorphism

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

7. Unlike regular erb files partials' names begin with an ________
underscore
production
production
integration

8. Naming convention for file names
CamelCase
puts 12.chr
Structs
underscores

9. All constants are _______
runs its validators
always public
Structs
rake db:migrate

10. to get ascii value of a character
rails generate migration AddPhoneToTickets phone:string
.:format
puts ?x where x is the character (not variable)
include modulename

11. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
rake db:migrate
the page template
data migration (db/migrate/..._create_something.rb)
runs its validators

12. the second uri indicate
rake db:migrate
:controller
ActiveRecord
Tweet.find(2).destroy

13. This method name indicates to rails that it should validate before saving/updating
validate
the page template
migration
.:format

14. You add the filter code right after the line introducing __________ in the controller
a responder object
the class
nested classes
ActionPack

15. the three "magic columns" are:id - _______ - updated_at
created_at
replace the word "scaffold" with the word "model"
nested classes
errors.add_to_base("there was an error")

16. models have only ______names
rake db:migrate
singular
ActiveRecord
a responder object

17. Allows instance variables to be accessible outside the class by defining = operators for variables
attr_accessor
underscore
rake db:migrate
nested classes

18. express error messages in a form (do |f|)
Structs
f.error_messages
runs its validators
attr_accessor

19. This variable changes the environment
validates_numericality_of
HTTP methods (post - get - put - delete)
render :partial
RAILS_ENV (RAILS_ENV=production)

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

21. to get character from ascii value
puts 12.chr
rails generate migration AddPhoneToTickets phone:string
render :partial
validate

22. the three "magic columns" are:id - _______ - updated_at
created_at
validate
Tweet.find(2).destroy
Structs

23. to declare global variables
underscore
<%= yield %>
validates_numericality_of
put a $ sign in front. For example $x

24. to destroy a row with id of 2 using only one line...
always public
CamelCase
Tweet.find(2).destroy
puts 12.chr

25. Naming convention for classes
production
the page template
attr_accessor
CamelCase

26. declaring classes inside another class
runs its validators
attr_accessor
nested classes
model

27. a RESTful application uses ... to define an interaction with the data.
put a $ sign in front. For example $x
HTTP methods (post - get - put - delete)
model
f.error_messages

28. to add an error (called "there was an error") in the validate method
:controller
errors.add_to_base("there was an error")
#{1+1}
HTTP methods (post - get - put - delete)

29. A script that alters the structure of the underlying database
validates_numericality_of
Embedded Ruby (ERb)
ActionPack
migration

30. to call a partial
Embedded Ruby (ERb)
render :partial
<=> operator
singular

31. This is a comparison operator
<=> operator
runs its validators
#{1+1}
f.error_messages

32. A search form is not associated with a ______
underscores
render :partial
model
the word "private"

33. Embedded Ruby (ERb) processes data from model objects AND _______ as inputs
production
rake db:migrate
singular
the page template

34. to include a module inside another class/file
include modulename
render :partial
rake db:migrate
puts ?x where x is the character (not variable)

35. Rails' object-relational mapping library
Structs
puts ?x where x is the character (not variable)
ActiveRecord
replace the word "scaffold" with the word "model"

36. tag that starts a form
puts 12.chr
<% form_for() %>
polymorphism
underscore

37. to generate regular model code (not scaffolding)
always public
replace the word "scaffold" with the word "model"
puts ?x where x is the character (not variable)
HTTP methods (post - get - put - delete)

38. Naming convention for classes
puts 12.chr
CamelCase
integration
puts 12.chr

39. to insert "1 + 1" into a string
polymorphism
#{1+1}
Tweet.find(2).destroy
nested classes

40. to generate regular model code (not scaffolding)
replace the word "scaffold" with the word "model"
created_at
<=> operator
f.error_messages

41. to create a migration that adds a "phone" field to the "tickets" table
rails generate migration AddPhoneToTickets phone:string
include modulename
polymorphism
:controller

42. edit routes
f.error_messages
config/routes.rb
created_at
always public

43. Kinds of test you create yourself
validates_numericality_of
integration test
underscore
plural

44. to declare global variables
production
replace the word "scaffold" with the word "model"
put a $ sign in front. For example $x
singular

45. The "format" in "repond_to do |format|"? is a ______
a responder object
underscores
.:format
plural

46. All constants are _______
rake db:migrate
always public
<=> operator
production

47. controller (and table) names are _______
plural
helper method
replace the word "scaffold" with the word "model"
a responder object

48. expression that all layouts have
render :partial
runs its validators
validate
<%= yield %>

49. to run the latest migrations
:controller
validate
rake db:migrate
<%= yield %>

50. Kinds of test you create yourself
f.error_messages
#{1+1}
.:format
integration test