Enable Javascript in Rspec tests in the Rails example.
Make Javascript use the correct IDs when fetching form fields in the Rails example.
The AJAX script in the Rails example needs to submit hidden Rails form data.
In the Rails example, the email creation view needs to include Rails' hidden form fields.
In the Rails example, only log when strong parameters filters out params.
Rails doesn't allow dash-separated HTML attributes.
Update email controller logic in the Rails example.
The AJAX script in the Rails example needs to redirect to Email#show.
Update the Email#show view to use the correct model names in the Rails example.
Fix a reference to the wrong model property in Email#show in the Rails example.
Attach the AJAX handler to the submit button on Email#new in the Rails example.
Fix the Rails example's Javascript tagging recipients with the wrong tag.
Fix indentation in the Rails example's controller.