title: ActiveRecord connection not established
body: <p>I used this command to create an app    rails new guestbook</p>
  
  <p>then i used :-</p>
  
  <pre><code>rails generate scaffold Person name:string
  </code></pre>
  
  <p>and in routes.rb i unhashed the <code>root :to =&gt; 'people#index'</code></p>
  
  <p>then I wrote in the address bar localhost:3000/people and I got the following error :-</p>
  
  <pre><code>ActiveRecord::ConnectionNotEstablished
  
  ActiveRecord::ConnectionNotEstablished
  Rails.root: /home/rudraksha/rbtest/gbook
  </code></pre>
  
  <p>please answer ASAP</p>