Here is a little snippet that will return new signups (or new records) for today select id, email, created_at::date date from signups where email not in (select distinct email from signups where created_at < current_date)

Rails will infer the controller you want to test from the class name of the test case. For example... class PeopleControllerTest < ActionController::TestCase end will test the app/controllers/people_controller.rb. To change this is trivial. Us...

Unfortunately PHP's PDO constructor doesn't take a database connection url (in a format that Heroku makes available as a config var) as an argument. It has its own, rather odd syntax. However, it's easy enough to extract url parts with the `parse_url`...

To get a Gravatar you need to hash an email address with the MD5 algorithm. MD5 is a part of the Ruby standard library. Rails loads it by default, but otherwise you will have to require it yourself. This is a simple implementation. Gravatar su...

This code assumes you're using the UIImagePickerController. If not you will need to get an image url another way. But, If you are using UIImagePickerControllerDelegate then it will supply the asset's url in the `info` dictionary . From the asset's url...