mathildathompson

TERNARY OPERATOR

n.abs == 1 ? 'bottle' : 'bottles'

#This is saying if the number of bottles is 1 return bottle, if not return bottles;

# In Ruby we have open classes; 
#You can take any class at any point and add extra data into it; 
#MONKEY MATCHING adding something later to something that exists already; 

mathildathompson

Inside irb: 

require 'json'
require 'httparty'

title = 'aliens' #comes from params[:movie_title]

url = "http://www.omdbapi.com/?t=#{title}"
#Data in HTTParty response format

mathildathompson

#http - tells you to use port 80; 
#ftp
#irc

#http = hypertext transfer protocol; 
#http://www.cnn.com/latest?q=idiots
# http://www.cnn.com (webserver that it lives on(domain, ip address)) / latest? (this is the path) ?q=idiots (this is the query string)
# This is an example of a path -> get 'hello' (which part of the server we are accessing, which bit of code to execute)

##HTTP VERBS

mathildathompson

class Sandwich
  @slices_of_bread = 2

  def how_much_bread()
    @slices_of_bread
  end
end
  
  #Instance variable you can access anywhere inside the class; 

mathildathompson

Grandma

Write a Deaf Grandma program.

Whatever you say to grandma (whatever you type in), she should respond with

HUH?! SPEAK UP, SONNY!

unless you shout it (type in all capitals).

mathildathompson

##Loading data from a CSV File
#Slow
#Memory expensive
#Buggy

##DATABASE
#A different program; 
#Create a string that describes what you want and send it to the database; 
#You could have the database on a different machine/different country, all you need to send to it is a query string; 

mathildathompson

Robot Name

When robots come off the factory floor, they have no name.

The first time you boot them up, a random name is generated, such as RX837 or BC811.

In other words, if I say:

puts "Robot 1: "

mathildathompson

- Username and password; 
- \h => help; 
-\c butterflies_app; 
-\d (desribe the table)

- cp -r butterflies_app butterflies_pg_app

-psql --help 
- psql -f butterflies.sql butterflies_app (run where the butterflies.sql is)
-\d butterflies

mathildathompson

##ENVIRONEMNTS
#Development (uses sqlite)
#Production (uses postgresql)
#Test environemnt

psql to get into the database
\l shows all of the databases; 
 \c students (connects to the students database);
\d shows relations; 

mathildathompson

##DEPLOYING TO HEROKU
#Create an account on Heroku 
https://www.heroku.com
#Download Heroku Toolbelt (a client for generating and creating heroku apps);
https://toolbelt.heroku.com/
heroku login #in the command line #It should generate SSH keys (we may have to do this manually);

#Gem list and check that you have the gem bundler; (You can do gem list | grep bundler); 
#If you do not have it then install it:
gem install bundler #We have already done this;