Databases and Rails Recap Quiz for Week 3 [solution]

gistfile1.txt

## 1) What does ERB stand for?


Embedded RuBy


## 2) What is the name of the place (library) where additional built in Ruby functions can be accessed?


STDlib









## 3) Name 3 Reasons to use Version Control.


- Ability to rollback
- Distributed backup
- Easily see diffs between commits
- Distributed work flow between team members



## 4) Name one version control software.

- GIT
- SVN
- Maven
- Perforce





## 5) What is the output of this Ruby code?



arry = ['Harry Potter', 'Hunger Games', 'Cat in the Hat']

arry.each do |x|
  puts "I enjoy reading #{x}"
end

"I enjoy reading Harry Potter"
"I enjoy reading Hunger Games"
"I enjoy reading Cat in the Hat"

## 6) What is the output of this ruby code?

richard = User.create(:name => 'richard', :movie => 'zoolander')
chris   = User.create(:name => 'chris',    :movie => 'sandlot')
ruby    = User.create(:name => 'ruby',    :movie => 'princess bride')

user_array = [richard, ruby, chris]

user_array.each do |user|
  puts "#{user.name} loves watching #{user.movie}"
end

"richard loves watching zoolander"
"ruby loves watching princess bride"
"chris loves watching sandlot"


### Hint
puts chris.name
# => 'chris'

puts chris.movie
# => 'sandlot'



## 7) Once we've modified and saved a file that is under version control what 3 steps do we need to get our changes on to our origin server?


- add
- commit
- push






## 8) In the exercise we did for homework last week, you entered in a url similar to `http://localhost:8000/index` into your browser. Once the server got the request, explain what needed to happen in order for you to view the web page.


- The server receives the request, and reads in the url. 
- Based on the path of the url ie `/me` it will look for a file named `me.html.erb`
- Our ruby server will read the contents of `me.html.erb` and then evaluate the ERB, the output is HTML that a computer can understand
- Rather than writing that output to disk, it sends it back to the browser that made the original request.
- The browser then renders the html

In question #8, does it look for a static me.html in the public folder before the me.html.erb in the views folder?

In answer to question 4. Maven actually is not a version control software.