title: rails g migration "command" to generate column rename migration?
body: <p>I want to auto generate a migration file that looks like this:</p>
  
  <pre><code>class RenameDatabaseColumn &lt; ActiveRecord::Migration
    def change
      rename_column :events, :subcategory, :subcategory_id
    end
  end
  </code></pre>
  
  <p>Is there some way to format my </p>
  
  <pre><code>rails g migration ~rename_column_events_subcategory_subcategory_id~
  </code></pre>
  
  <p>or something like that to auto generate that file?</p>