Make wheel size an combobox option on bikes

db/migrate/20131019150459_create_bike_wheel_sizes.rb

@@ -0,0 +1,22 @@
+class CreateBikeWheelSizes < ActiveRecord::Migration
+  def up
+    create_table(:bike_wheel_sizes) do |t|
+      t.string :twmm
+      t.string :rdmm
+      t.string :twin
+      t.string :rdin
+      t.string :twfr
+      t.string :rdfr
+      t.string :description
+      t.string :tire_common_score
+    end
+
+    #create the default undetermined wheel size record
+    BikeWheelSize.create( twmm: 0, rdmm: 0, rdin: 0, twin: 0, rdfr: 0, twfr: 0, description: "UNDETERMINED", tire_common_score: 0)
+    ActiveRecord::Base.connection.execute(IO.read(File.join(Rails.root, "db", "seed", "sql", "common_wheel_sizes.sql")))
+  end
+
+  def down
+    drop_table :bike_wheel_sizes
+  end
+end

db/migrate/20131019170248_alter_bike_wheel_to_id.rb

@@ -0,0 +1,34 @@
+class AlterBikeWheelToId < ActiveRecord::Migration
+  def up
+    add_column :bikes, :bike_wheel_size_id, :integer
+
+    undetermined_id = BikeWheelSize.find_by_rdin("0")
+    Bike.find_each do |bike|
+      wheel_size = BikeWheelSize.find_by_rdin(bike.wheel_size.to_s)
+
+      if wheel_size.nil?
+        wheel_size_id = undetermined_id
+      else
+        wheel_size_id = wheel_size.id
+      end
+      bike.bike_wheel_size_id = wheel_size_id
+      bike.save
+    end
+
+    remove_column :bikes, :wheel_size
+  end
+
+  def down
+
+    add_column :bikes, :wheel_size, :integer
+
+    Bike.find_each do |bike|
+      wheel_size = BikeWheelSize.find_by_id(bike.bike_wheel_size_id)
+      bike.wheel_size = wheel_size.rdin.to_i
+      bike.save
+    end
+
+    remove_column :bikes, :bike_wheel_size_id
+
+  end
+end