title: Setting links between tables in sqlite3. Rails 5
body: <p>Sorry maybe for the stupid question but I'm new. When I create tables using this command <code>rails g model Post title:string description:text</code>. How can I further make a connection between another table by?</p>
  
  <p>Or  will have enough in the models table select <code>belongs_to</code>? And thus the connection will be already established and you will not need to install anything in the migration. </p>