First commit

LICENSE.txt

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+Freeware License, some rights reserved
+
+Copyright (c) 2008 David Berube
+
+Permission is hereby granted, free of charge, to anyone obtaining a copy 
+of this software and associated documentation files (the "Software"), 
+to work with the Software within the limits of freeware distribution and fair use. 
+This includes the rights to use, copy, and modify the Software for personal use. 
+Users are also allowed and encouraged to submit corrections and modifications 
+to the Software for the benefit of other users.
+
+It is not allowed to reuse,  modify, or redistribute the Software for 
+commercial use in any way, or for a user�s educational materials such as books 
+or blog articles without prior permission from the copyright holder. 
+
+The above copyright notice and this permission notice need to be included 
+in all copies or substantial portions of the software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS OR APRESS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+

README.md

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+#Apress Source Code
+
+This repository accompanies [*Practical Reporting with Ruby and Rails*](http://www.apress.com/9781590599334) by David Berube (Apress, 2008).
+
+![Cover image](9781590599334.jpg)
+
+Download the files as a zip using the green button, or clone the repository to your machine using Git.
+
+##Releases
+
+Release v1.0 corresponds to the code in the published book, without corrections or updates.
+
+##Contributions
+
+See the file Contributing.md for more information on how you can contribute to this repository.

chapter01/player_salary_ratio.rb

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+require 'active_record'
+
+ActiveRecord::Base.establish_connection(
+  :adapter  => 'mysql',
+  :host     => 'localhost',
+  :username => 'root',  # This is the default username and password
+  :password => '',      # for MySQL, but note that if you have a
+                        # different username and password,
+                        # you should change it.
+  :database => 'players')
+
+
+class Player <  ActiveRecord::Base
+end
+
+Player.delete_all
+
+Player.new do |p|
+  p.name = "Matthew 'm_giff' Gifford"
+  p.salary = 89000.00
+  p.wins = 11
+  p.save
+end
+
+Player.new do |p|
+  p.name = "Matthew 'Iron Helix' Bouley"
+  p.salary = 75000.00
+  p.wins  = 4
+  p.save
+end
+
+Player.new do |p|
+  p.name = "Luke 'Cable Boy' Bouley"
+  p.salary = 75000.50
+  p.wins = 7
+  p.save
+end
+
+salary_total = 0
+win_total=0
+
+players = Player.find(:all) 
+players.each do |player|
+  puts "#{player.name}: $#{'%0.2f' % (player.salary/player.wins)} per win"
+  salary_total = salary_total + player.salary
+  win_total = win_total + player.wins
+end
+
+puts "\nAverage Cost Per Win : $#{'%0.2f' % (salary_total / win_total )}"
+

chapter01/player_schema.sql

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+CREATE DATABASE players;
+USE players;
+CREATE TABLE players (
+  id int(11) NOT NULL AUTO_INCREMENT,
+  name TEXT,
+  wins int(11) NOT NULL,
+  salary DECIMAL(9,2),
+  PRIMARY KEY (id)
+)
+

chapter01/player_schema_2.sql

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+DROP DATABASE players_2;
+CREATE DATABASE players_2;
+USE players_2;
+
+CREATE TABLE players (
+  id int(11) NOT NULL AUTO_INCREMENT,
+  name TEXT,
+  salary DECIMAL(9,2),
+  PRIMARY KEY (id)
+);
+
+INSERT INTO players (id, name, salary) VALUES (1, "Matthew 'm_giff' Gifford", 89000.00);
+INSERT INTO players (id, name, salary) VALUES (2, "Matthew 'Iron Helix' Bouley", 75000.00);
+INSERT INTO players (id, name, salary) VALUES (3, "Luke 'Cable Boy' Bouley", 75000.50);
+
+CREATE TABLE games (
+  id int(11) NOT NULL AUTO_INCREMENT,
+  name TEXT,
+  PRIMARY KEY (id)
+);
+
+INSERT INTO games (id, name) VALUES (1, 'Eagle Beagle Ballad');
+INSERT INTO games (id, name) VALUES (2, 'Camel Tender Redux');
+INSERT INTO games (id, name) VALUES (3, 'Super Dunkball II: The Return');
+INSERT INTO games (id, name) VALUES (4, 'Turn the Corner SE: CRX vs Porche');
+
+CREATE TABLE wins (
+  id int(11) NOT NULL AUTO_INCREMENT,
+  player_id int(11) NOT NULL,
+  game_id int(11) NOT NULL,
+  quantity int(11) NOT NULL,
+  PRIMARY KEY (id)
+);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 1, 3);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 3, 5);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 2, 9);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 4, 9);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 1, 8);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 3, 5);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 2, 13);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 4, 5);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 1, 2);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 3, 15);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 2, 4);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 4, 6);
+

chapter01/player_wins.rb

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+require 'active_record'
+
+ActiveRecord::Base.establish_connection(
+  :adapter  => 'mysql',
+  :host     => 'localhost',
+  :username => 'root',  # This is the default username and password
+  :password => '',      # for MySQL, but note that if you have a
+                        # different username and password,
+                        # you should change it.
+  :database => 'players_2')
+
+
+class Player <  ActiveRecord::Base
+	has_many :wins
+  def total_wins
+    total_wins = 0
+    self.wins.each do |win|
+    total_wins = total_wins + win.quantity
+    end
+    total_wins
+  end
+end
+class Game <  ActiveRecord::Base
+	has_many :wins
+end
+class Win <  ActiveRecord::Base
+	belongs_to :game
+  belongs_to :player
+end
+
+games = Game.find(:all)
+
+games.each do |game|
+  highest_win=nil
+  game.wins.each do |win|
+  highest_win = win if highest_win.nil? or 
+                                   win.quantity > highest_win.quantity
+  end
+
+  puts "#{game.name}: #{highest_win.player.name} with #{highest_win.quantity} wins"
+end
+
+players = Player.find(:all) 
+
+highest_winning_player = nil
+
+players.each do |player|
+  highest_winning_player = player if 
+                    highest_winning_player.nil? or 
+                    player.total_wins > highest_winning_player.total_wins
+end
+
+puts "Highest Winning Player: #{highest_winning_player.name} with #{highest_winning_player.total_wins} wins"
+

chapter02/player_schema_3.sql

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+DROP  DATABASE IF EXISTS players_3 ;
+CREATE DATABASE players_3;
+USE players_3;
+
+CREATE TABLE players (
+  id int(11) NOT NULL AUTO_INCREMENT,
+  name TEXT,
+  drink TEXT,
+  salary DECIMAL(9,2),
+  PRIMARY KEY (id)
+);
+
+INSERT INTO players (id, name, drink, salary) VALUES 
+                    (1, "Matthew 'm_giff' Gifford", "Moxie", 89000.00);
+INSERT INTO players (id, name, drink, salary) VALUES 
+                    (2, "Matthew 'Iron Helix' Bouley", "Moxie", 75000.00);
+INSERT INTO players (id, name, drink, salary) VALUES 
+                    (3, "Luke 'Cable Boy' Bouley", "Moxie", 75000.50);
+INSERT INTO players (id, name, drink, salary) VALUES 
+                    (4, "Andrew 'steven-tyler-xavier' Thomas", 'Fresca', 75000.50);
+INSERT INTO players (id, name, drink, salary) VALUES 
+                    (5, "John 'dwy_dwy' Dwyer", 'Fresca', 89000.00);
+INSERT INTO players (id, name, drink, salary) VALUES 
+                    (6, "Ryan 'the_dominator' Peacan", 'Fresca', 75000.50);
+INSERT INTO players (id, name, drink, salary) VALUES 
+                    (7, "Michael 'Shaun Wiki' Southwick", 'Fresca', 75000.50);
+
+CREATE TABLE games (
+  id int(11) NOT NULL AUTO_INCREMENT,
+  name TEXT,
+  PRIMARY KEY (id)
+);
+
+INSERT INTO games (id, name) VALUES (1, 'Bubble Recyler');
+INSERT INTO games (id, name) VALUES (2, 'Computer Repair King');
+INSERT INTO games (id, name) VALUES (3, 'Super Dunkball II: The Return');
+INSERT INTO games (id, name) VALUES (4, 'Sudden Decelleration: No Time to Think');
+
+CREATE TABLE wins (
+  id int(11) NOT NULL AUTO_INCREMENT,
+  player_id int(11) NOT NULL,
+  game_id int(11) NOT NULL,
+  quantity int(11) NOT NULL,
+  PRIMARY KEY (id)
+);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 1, 3);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 3, 8);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 2, 3);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (1, 4, 9);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 1, 8);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 3, 10);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 2, 7);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (2, 4, 5);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 1, 8);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 3, 4);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 2, 20);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (3, 4, 8);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (4, 1, 8);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (4, 3, 9);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (4, 2, 6);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (4, 4, 3);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (5, 1, 7);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (5, 3, 1);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (5, 2, 9);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (5, 4, 4);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (6, 1, 2);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (6, 3, 10);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (6, 2, 8);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (6, 4, 9);
+
+INSERT INTO wins (player_id, game_id, quantity) VALUES (7, 1, 2);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (7, 3, 1);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (7, 2, 4);
+INSERT INTO wins (player_id, game_id, quantity) VALUES (7, 4, 9);
+

chapter02/salary_distribution.rb

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+require 'active_record'
+
+# Establish a connection to the database...
+ActiveRecord::Base.establish_connection(
+  :adapter  => 'mysql',
+  :host     => 'localhost',
+  :username => 'root',  # This is the default username and password
+  :password => '',      # for MySQL, but note that if you have a
+                        # different username and password,
+                        # you should change it.
+  :database => 'players_3')
+
+# ... set up our models ...
+class Player <  ActiveRecord::Base
+  has_many :wins
+end
+class Game <  ActiveRecord::Base
+  has_many :wins
+end	
+class Win <  ActiveRecord::Base
+  belongs_to :game
+  belongs_to :player
+end
+
+# ... and perform our calculation: 
+
+puts "Salary\t\tCount"
+
+Player.calculate(:count, :id, :group=>'salary').each do |player|
+  salary, count = *player
+  puts "$#{'%0.2f' % salary}\t#{count} "
+
+  # Note that the '%0.25f' % call formats the value as a float 
+  # with two decimal points; the String's % operator works
+  # similarly to the C sprintf function.
+
+end
+