I'm thoughtful about these. I usually like to keep the methods that will return an object, in that object's controller. That way if something is returning a Student, I'll know it's somewhere in the StudentsController. No matter what it's grouped or categorized by.

So instead having something like:
EventsController > by_accessibility

Leaving a route like:
```
get 'accesibilidades/:id/eventos',
  'events#by_accessibility',
  as: :events_by_accessibility
```

@iuval @oscarsiniscalchi thoughts?