FEATURE: New "Dropdown" user field type

app/models/user_field.rb

@@ -1,5 +1,7 @@
 class UserField < ActiveRecord::Base
   validates_presence_of :name, :description, :field_type
+  has_many :user_field_options, dependent: :destroy
+  accepts_nested_attributes_for :user_field_options
 
   def self.max_length
     2048

app/models/user_field_option.rb

@@ -0,0 +1,2 @@
+class UserFieldOption < ActiveRecord::Base
+end