Deleting duplicated files etc.

Gemfile

@@ -1,3 +1,4 @@
 source 'https://rubygems.org'
 
 gem 'activerecord', :require => 'active_record'
+gem 'faker'

Rakefile

@@ -1,5 +1,7 @@
 require 'rake'
 require 'rspec/core/rake_task'
+require 'faker'
+require_relative 'app/models/teacher'
 require_relative 'db/config'
 require_relative 'lib/students_importer'
 
@@ -28,6 +30,16 @@ task "db:populate" do
   StudentsImporter.import
 end
 
+task "db:populate_teacher" do
+  10.times do
+    teacher = Teacher.create! (
+    {:first_name => Faker::Name.first_name,
+    :last_name  => Faker::Name.last_name,
+    :email      => Faker::Internet.email,
+    :phone      => Faker::PhoneNumber.phone_number })
+  end
+end
+
 desc 'Retrieves the current schema version number'
 task "db:version" do
   puts "Current version: #{ActiveRecord::Migrator.current_version}"

app/models/student.rb

@@ -1,3 +1,26 @@
 require_relative '../../db/config'
 
-# implement your Student model here
+class Student < ActiveRecord::Base 
+
+  validates :email, :uniqueness => true
+  validates :email, :format => { :with => /\S+[@]\w+[.]\w{2,}/, :message => "Invalid email" }
+  validates :age, :numericality => {:greater_than => 4}
+  validates :sanitized_number, :numericality => {:greater_than => 9} 
+
+  # Does it matter if age and sanitized_number are instance variables (@age and @sanitized_number)?
+
+
+  def name  
+    name = "#{first_name} #{last_name}"
+  end
+
+  def age
+    now.year - birthday.year  - ((now.month > birthday.month || (now.month == birthday.month && now.day >= birthday.day)) ? 0 : 1)
+  end 
+
+  def sanitized_number
+    phone.gsub(/\D/, '').length
+  end
+end 
+
+

app/models/teachers.rb

@@ -0,0 +1,7 @@
+require_relative '../../db/config'
+
+class Teacher < ActiveRecord::Base 
+
+  validates :email, :uniqueness => true
+
+end 

db/migrate/20121011144238_create_students.rb

@@ -1,9 +1,18 @@
 require_relative '../config'
 
-# this is where you should use an ActiveRecord migration to 
 
 class CreateStudents < ActiveRecord::Migration
   def change
-    # HINT: checkout ActiveRecord::Migration.create_table
+    create_table :students do |t|
+      t.integer   :id
+      t.string    :first_name
+      t.string    :last_name
+      t.string    :gender
+      t.string    :email
+      t.string    :phone
+      t.date      :birthday
+      # t.datetime  :created_at
+      # t.datetime  :updated_at 
+    end
   end
 end

db/migrate/20121011144238_create_teachers.rb

@@ -0,0 +1,17 @@
+require_relative '../config'
+
+
+class CreateStudents < ActiveRecord::Migration
+  def change
+    create_table :teachers do |t|
+      t.integer   :id
+      t.string    :first_name
+      t.string    :last_name
+      t.string    :gender
+      t.string    :email
+      t.string    :phone
+      # t.datetime  :created_at
+      # t.datetime  :updated_at 
+    end
+  end
+end

spec/migrate_create_table_spec.rb

@@ -19,7 +19,7 @@
     }
 
     ActiveRecord::Base.connection.columns(:students).each do |col|
-      expected[col.type].include?(col.name).should be_true
+      expected[col.type].include?(col.name).should be_true unless expected[col.type].nil?
     end
   end
 end