Criado o model article

app/models/article.rb

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+class Article < ActiveRecord::Base
+end

db/migrate/20100509210407_create_articles.rb

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+class CreateArticles < ActiveRecord::Migration
+  def self.up
+    create_table :articles do |t|
+      t.string :title
+      t.string :body
+
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :articles
+  end
+end

db/schema.rb

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+# This file is auto-generated from the current state of the database. Instead of editing this file, 
+# please use the migrations feature of Active Record to incrementally modify your database, and
+# then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your database schema. If you need
+# to create the application database on another system, you should be using db:schema:load, not running
+# all the migrations from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended to check this file into your version control system.
+
+ActiveRecord::Schema.define(:version => 20100509210407) do
+
+  create_table "articles", :force => true do |t|
+    t.string   "title"
+    t.string   "body"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+end

spec/models/article_spec.rb

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+require 'spec_helper'
+
+describe Article do
+  pending "add some examples to (or delete) #{__FILE__}"
+end