title: Is it possible to DRY this migration up?
body: <p>I have a table, folders that I want some other tables to reference, so far my migration script looks like this:</p>
  
  <pre><code>create_table :folders do |t|
    t.timestamps
  end
  
  ....
  
  change_table table1 do |t|
    t.references :folders
  end
  change_table table2 do |t|
    t.references :folders
  end
  change_table table3 do |t|
    t.references :folders
  end
  change_table table4 do |t|
    t.references :folders
  end
  </code></pre>
  
  <p>Since I'm doing essentially the same thing to each table, is there a more concise and maintainable way to write this?</p>
  
  <p>Thanks</p>