chrisbranson · March 28, 2014 18:09 · Jan 30, 2014 · Nov 4, 2013
diff --git a/default_values.rb b/default_values.rb
@@ -1,7 +1,12 @@
 module DefaultValues
 
-  def has_default_values
+  def has_default_values(default_values = {})
+
+    cattr_accessor :default_values
+    self.default_values = default_values
+
     after_initialize :assign_default_values
+
     include InstanceMethods
   end
 

diff --git a/some_model.rb b/some_model.rb
@@ -1,13 +1,11 @@
 # Example usage
 class SomeModel < ActiveRecord::Base
 
-  has_default_values
-
-  private
-
-    def default_values
-      { title: "Default",
-        flag_yn: false }
-    end
+  has_default_values(
+    title: "Default",
+    flag_yn: false
+  )
+
+  ..
 
 end
diff --git a/default_values.rb b/default_values.rb
@@ -0,0 +1,19 @@
+module DefaultValues
+
+  def has_default_values
+    after_initialize :assign_default_values
+    include InstanceMethods
+  end
+
+  module InstanceMethods
+    private
+
+    def assign_default_values
+      return unless new_record?
+      default_values.each do |key, value|
+        self[key] = value if self[key].nil?
+      end
+    end
+  end
+
+end
diff --git a/extend_active_record.rb b/extend_active_record.rb
@@ -0,0 +1,2 @@
+# In config/initializers
+ActiveRecord::Base.extend DefaultValues
diff --git a/some_model.rb b/some_model.rb
@@ -0,0 +1,13 @@
+# Example usage
+class SomeModel < ActiveRecord::Base
+
+  has_default_values
+
+  private
+
+    def default_values
+      { title: "Default",
+        flag_yn: false }
+    end
+
+end
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		# In config/initializers
		ActiveRecord::Base.extend DefaultValues