--- /dev/null
+++ b/app/models/author.rb
@@ -0,0 +1,3 @@
+class Author < ActiveRecord::Base
+  validates_presence_of :name, :email, :open_id
+end

--- /dev/null
+++ b/db/migrate/007_create_authors.rb
@@ -0,0 +1,13 @@
+class CreateAuthors < ActiveRecord::Migration
+  def self.up
+    create_table :authors do |t|
+      t.string :name
+      t.string :email
+      t.string :open_id
+    end
+  end
+
+  def self.down
+    drop_table :authors
+  end
+end

--- a/db/schema.rb
+++ b/db/schema.rb
@@ -9,7 +9,13 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 6) do
+ActiveRecord::Schema.define(:version => 7) do
+
+  create_table "authors", :force => true do |t|
+    t.string "name"
+    t.string "email"
+    t.string "open_id"
+  end
 
   create_table "comments", :force => true do |t|
     t.integer  "post_id",                                 :null => false
@@ -17,8 +23,8 @@ ActiveRecord::Schema.define(:version => 6) do
     t.string   "author_url",              :default => "", :null => false
     t.string   "author_email",            :default => "", :null => false
     t.string   "author_openid_authority", :default => "", :null => false
-    t.text     "body",                    :default => "", :null => false
-    t.text     "body_html",               :default => "", :null => false
+    t.text     "body",                                    :null => false
+    t.text     "body_html",                               :null => false
     t.datetime "created_at"
     t.datetime "updated_at"
   end
@@ -29,8 +35,8 @@ ActiveRecord::Schema.define(:version => 6) do
   create_table "pages", :force => true do |t|
     t.string   "title",      :default => "", :null => false
     t.string   "slug",       :default => "", :null => false
-    t.text     "body",       :default => "", :null => false
-    t.text     "body_html",  :default => "", :null => false
+    t.text     "body",                       :null => false
+    t.text     "body_html",                  :null => false
     t.datetime "created_at"
     t.datetime "updated_at"
   end
@@ -41,8 +47,8 @@ ActiveRecord::Schema.define(:version => 6) do
   create_table "posts", :force => true do |t|
     t.string   "title",                   :default => "",   :null => false
     t.string   "slug",                    :default => "",   :null => false
-    t.text     "body",                    :default => "",   :null => false
-    t.text     "body_html",               :default => "",   :null => false
+    t.text     "body",                                      :null => false
+    t.text     "body_html",                                 :null => false
     t.boolean  "active",                  :default => true, :null => false
     t.integer  "approved_comments_count", :default => 0,    :null => false
     t.string   "cached_tag_list"

--- /dev/null
+++ b/spec/models/authors_spec.rb
@@ -0,0 +1,27 @@
+require File.dirname(__FILE__) + '/../spec_helper'
+
+describe Author, 'validations' do
+  def valid_author_attributes
+    {
+      :name => "Don Alias",
+      :email  => "don@enkiblog.com",
+      :open_id  => "http://enkiblog.com"
+    }
+  end
+
+  it 'is valid with valid_author_attributes' do
+    Author.new(valid_author_attributes).should be_valid
+  end
+
+  it 'is invalid with no name' do
+    Author.new(valid_author_attributes.merge(:name => '')).should_not be_valid
+  end
+
+  it 'is invalid with no email' do
+    Author.new(valid_author_attributes.merge(:email => '')).should_not be_valid
+  end
+
+  it 'is invalid with no open_id' do
+    Author.new(valid_author_attributes.merge(:open_id => '')).should_not be_valid
+  end
+end