pages_controller.rb

class PagesController < ApplicationController
	def show
		@page = nil
		current = nil
		params[:slug].split('/').reverse.each do |s|
			if current
				current = current.parent.where(slug: s)
			else
				@page = Page.find_by(slug: s)
				current = @page
			end
			render status: 404 unless @page || current
		end
	end
end