Notes and sample code

Author: tannerwelsh

session-notes/2015-03-10/README.md

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+# Fundamentals of Web Development
+
+**March 10, 2015**
+
+## Project Building
+
+- Sagar
+- Theodore
+- Quinn
+- Mark
+- Ric
+- Guillermo

session-notes/2015-03-10/guillermos_model.rb

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+deaddrop.date_of_self_destruct   if params[:date]
+deaddrop.views_til_self_destruct if params[:views]
+deaddrop.keep_history            if params[:history]
+
+deaddrop.apply_attributes(params)
+
+# other file
+
+class DeadDrop
+  # property declarations
+  
+  def apply_attributes(params)
+    self.date_of_self_destruct = DateTime.now if params[:date] && !params[:date].empty?
+    self.views_til_self_destruct if params[:views]
+    self.keep_history            if params[:history]
+  end
+end

session-notes/2015-03-10/sagars_models.rb

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+require 'data_mapper'
+require 'bcrypt'
+
+if ENV['RACK_ENV'] != 'production'
+  require 'dotenv'
+  Dotenv.load('.env')
+end
+
+DataMapper.setup(:default, ENV['DATABASE_URL'])
+
+# USERS
+# =====================================
+
+class User
+  include DataMapper::Resource
+  property :id, Serial
+  property :first_name, String, :required => true
+  property :last_name, String, :required => true
+  property :email, String, { :required => true,
+                             :unique => true,
+                             :format => :email_address,
+                             :messages => { :presence  => "Please enter a valid email address.",
+                                            :is_unique => "It looks like that email is already taken.",
+                                            :format    => "Please enter a valid email address"
+                                          }
+                            }
+  property :phone_number, String, { :required => true,
+                                     :unique => true,
+                                     :messages => { :presence => "Please enter your phone number.",
+                                                    :is_unique => "It looks like that phone number is taken."
+                                                  }
+                                  }
+
+  property :password, BCryptHash, :required => true
+  validates_confirmation_of :password
+
+  attr_accessor :password_confirmation
+  validates_length_of :password_confirmation, :min => 6, :if => :new_user
+
+  def new_user
+    self.new?
+  end
+
+  has n, :memberships
+  has n, :groups, through: :memberships
+
+  # has n, :bets, :child_key => [:source_id]
+  # has n, :bettors, self, :through => :bets, :via => :target
+
+  has n, :created_bets, 'Bets', :child_key => [:bettor_id]
+  has n, :joined_bets, 'Bets', :child_key => [:bettee_id]
+
+  def bets
+    self.created_bets + self.joined_bets
+  end
+end
+
+# bettor = User.new
+# bettee = User.new
+# 
+# bettor.bets # => all bets that bettor has create
+# bettor.bets.first.bettee
+
+# bookings
+# - user_id
+# - bet_id
+# - is_creator Boolean
+
+# create instance of bet and assign bettee
+Bet.new(bettor: User.find(3), bettee: User.find(7))
+
+
+# MEMBERSHIP JOIN TABLE
+# =====================================
+
+class Membership
+  include DataMapper::Resource
+  property :id, Serial
+  belongs_to :user, :required => true
+  belongs_to :group, :required => true
+
+end
+
+# GROUPS
+# =====================================
+
+class Group
+  include DataMapper::Resource
+  property :id, Serial
+  property :group_name, String, { :required => true,
+                                   :unique => true,
+                                   :messages => { :is_unique => "Group name is taken. Please choose another." }
+                                  }
+
+  property :password, BCryptHash, :required => true
+  validates_confirmation_of :password
+
+  attr_accessor :password_confirmation
+  validates_length_of :password_confirmation, :min => 6, :if => :new_group
+
+
+  def new_group
+    self.new?
+  end
+
+  has n, :memberships
+  has n, :users, through: :memberships
+
+end
+
+# BETS
+# =====================================
+
+class Bet
+  include DataMapper::Resource
+  property :id, Serial
+  property :amount, Float
+  property :expiration, Date
+  property :description, Text
+
+  belongs_to :bettor, 'User', :key => true
+  belongs_to :bettee, 'User', :key => true
+end
+
+DataMapper.finalize
+DataMapper.auto_upgrade!

session-notes/2015-03-10/theodores_server.rb

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+require 'rubygems'
+require 'twilio-ruby'
+require 'sinatra'
+
+$incoming = []
+
+get '/' do
+  @received_messages = $incoming
+
+  erb :index
+end
+
+get '/sms-quickstart' do
+  # capturing incoming text data
+  incoming_message = params[:Body]
+  phone_number = params[:From]
+
+  # persisting text data (DB would be much better, but this is GEFN)
+  $incoming << { body: incoming_message, phone: phone_number }
+
+  # building a TWIML response for the Twilio API
+  twiml = Twilio::TwiML::Response.new do |r|
+    r.Message do |message|
+      message.Body "Hey Monkey. Thanks for the message!"
+      message.MediaUrl "https://demo.twilio.com/owl.png"
+    end
+  end
+  twiml.text
+end