kurenn · March 29, 2017 21:16 · Dec 31, 2012 · Dec 31, 2012
diff --git a/gistfile1.txt → gistfile1.rb b/gistfile1.txt → gistfile1.rb
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -0,0 +1,68 @@
+##Userable
+module Userable
+  def self.included(base)
+    base.has_one :user, :as => :userable, :dependent => :destroy, :autosave => true
+    base.validate :user_must_be_valid
+    base.alias_method_chain :user, :autobuild
+    base.extend ClassMethods
+    base.define_user_accessors
+  end
+
+  def user_with_autobuild
+      user_without_autobuild || build_user
+  end
+
+  def method_missing(meth, *args, &blk)
+      user.send(meth, *args, &blk)
+    rescue NoMethodError
+      super
+  end
+
+  protected
+
+  def user_must_be_valid
+      unless user.valid?
+        user.errors.each do |attr, message|
+          errors.add(attr, message)
+      end
+    end
+  end
+
+  module ClassMethods
+    def define_user_accessors
+      all_attributes = User.columns.map(&:name)
+      all_attributes << "password"
+      all_attributes << "password_confirmation"
+      ignored_attributes = ["created_at", "updated_at", "userable_type", "encrypted_password", "id", "userable_id"]
+      attributes_to_delegate = all_attributes - ignored_attributes
+      attributes_to_delegate.each do |attrib|
+        class_eval <<-RUBY
+          def #{attrib}
+            user.#{attrib}
+          end
+
+          def #{attrib}=(value)
+            self.user.#{attrib} = value
+          end
+
+          def #{attrib}?
+            self.user.#{attrib}?
+          end
+        RUBY
+      end
+    end
+  end
+end
+
+##Act as user
+class ActiveRecord::Base
+  def self.acts_as_user
+    include Userable
+  end
+end
+
+##User model
+belongs_to :userable, polymorphic: true
+
+##Polymorphic model
+acts_as_user
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