title: When should you run migrations on a pull request?
body: <p>Sorry for such a noob question - new to git and ruby on rails.</p>
  
  <p>I am on a school coding team writing an app in rails. One of the pull requests has a new database on it, but the migrations have not been run (rake db:migrate).</p>
  
  <p>Should we run the migration on the branch first and then merge to master or merge to master and then do rake db:migrate on the master branch?</p>