title: List of ActiveRecord DB datatypes as symbols/strings
body: <p>This is a really short question: Is there a list of all datatypes I can use for columns in a mysql database with ActiveRecord?</p>
  
  <p>I know the datatypes and that they are all listed in the docs, but I want to know if there is already a <em>collection of the types I could use to populate an html <code>&lt;select&gt;</code></em>.  I'd like to avoid creating an own list for this if it already exists, but I can't seem to find one.</p>