Better settings coupling with spec coverage

app/models/employee.rb

@@ -1,13 +1,19 @@
 class Employee
   include SimplyStored::Couch
   include ActiveModel::SerializerSupport
+  attr_reader :settings
   DEFAULT_SETTINGS = {
     'manager' => false,
     'active' => true,
     'color' => '#3a87ad'
   }
-  attr_accessor *DEFAULT_SETTINGS.keys
-  attr_reader :settings
+  DEFAULT_SETTINGS.each do |attribute, default_value|
+    define_method(attribute) { settings.public_send attribute }
+    define_method("#{attribute}=") { |value| settings.set attribute, value }
+    if default_value == true or default_value == false # boolean
+      define_method(:"#{attribute}?"){ public_send attribute }
+    end
+  end
 
   view :by_confirmation_token, key: :confirmation_token # devise confirmable
   devise :database_authenticatable, :recoverable, :rememberable, :trackable, :registerable, :confirmable
@@ -35,10 +41,13 @@ class Employee
 
   def enrich_with_settings(settings)
     @settings = settings
-    settings.settings.each do |attribute, value|
-      public_send "#{attribute}=", value
-    end
-    settings
+  end
+  alias_method :settings=, :enrich_with_settings
+
+  alias_method :orig_save, :save
+  def save(*args)
+    settings.persist!
+    orig_save(*args)
   end
 
   def settings