Introduces new RegistrationPeriod Object for Conference

#416

db/migrate/20140804185823_create_registration_periods.rb

@@ -0,0 +1,16 @@
+class CreateRegistrationPeriods < ActiveRecord::Migration
+  def up
+    create_table :registration_periods do |t|
+      t.integer :conference_id
+      t.date :start_date
+      t.date :end_date
+      t.text :description
+
+      t.timestamps
+    end
+  end
+
+  def down
+    drop_table :registration_periods
+  end
+end

db/migrate/20140812065531_move_conference_registration_data_to_registration_periods.rb

@@ -0,0 +1,33 @@
+class MoveConferenceRegistrationDataToRegistrationPeriods < ActiveRecord::Migration
+  class TempConference < ActiveRecord::Base
+    self.table_name = 'conferences'
+  end
+
+  class TempRegistrationPeriod < ActiveRecord::Base
+    self.table_name = 'registration_periods'
+    attr_accessible :conference_id, :start_date, :end_date, :description
+  end
+
+  def up
+    # Move all the settings to the new object
+    TempConference.all.each do |conference|
+      unless TempRegistrationPeriod.exists?(conference_id: conference.id)
+        TempRegistrationPeriod.create(conference_id: conference.id,
+                                      start_date: conference.registration_start_date,
+                                      end_date: conference.registration_end_date,
+                                      description: conference.registration_description)
+      end
+    end
+
+    # Remove Columns
+    remove_column :conferences, :registration_start_date
+    remove_column :conferences, :registration_end_date
+    remove_column :conferences, :registration_description
+  end
+
+  def down
+    add_column :conferences, :registration_start_date, :date
+    add_column :conferences, :registration_end_date, :date
+    add_column :conferences, :registration_description, :text
+  end
+end