Have Rails Partials Pull Data Directly For DRY Code and Easy Testability
Rails Partials are often reused on multiple pages, so why not have them pull their required data directly instead of repeating code in multiple controllers that pushes data to them!?
HomePageController might be rendering _bookings.html.erb, _locations.html.erb, and _providers.html.erb, thus having code like this in its index action:
@bookings = Booking.all @locations = Location.all @providers = Provider.all
And then BookingsController repeating:
@bookings = Booking.all
@locations = Location.all
@providers = Provider.all
An alternative is to add the following to ApplicationHelper:
def bookings @bookings ||= Booking.all end
def locations @locations ||= Location.all end
def providers @providers ||= Provider.all end
Include in ApplicationController.
Delete all lines setting up these variables in all controllers, HomePageController, BookingsController, LocationsController, and ProvidersController
And finally only call "bookings", "locations", and "providers" from their respective partials.
That is DRY Rails variable setup code for the win. Makes it easy to test-drive the partial views too!