gistfile1.rb

# Controller
def publish
  	trip = Trip.find(params[:id])
		trip.status = 'published'
		trip.save!
		
		redirect_to account_trips_path, notice: 'Your trip is now live!'
end

# Routes
resources :trips do
  member do
		post 'publish', to: 'trips#publish'
	end
		
	resources :bookings
end