hosts_controller.rb
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	class HostsController < ApplicationController
	before_action :fetch_host, only: [:show, :edit, :update, :destroy]

	# GET /hosts
	def new
	@host = Host.new
	end

	# POST /hosts
	def create
	@host = Host.new(fetch_params)
	if @host.save
	redirect_to host_path @host
	else
	render :new
	end
	end

	# GET /hosts/1
	def show; end

	# GET /hosts/1/edit
	def edit; end

	# PATCH /hosts/1
	def update
	updates = fetch_params.slice(:port, :password)
	if updates.present? && @host.update_attributes(updates)
	@host.recalculate
	redirect_to host_path @host
	else
	render :edit
	end
	end

	# DELETE /hosts/1
	def destroy
	@host.destroy
	redirect_to root_path
	end

	private

	def fetch_host
	@host = Host.includes(job_templates: [:fileset, :schedule]).find(params[:id])
	end

	def fetch_params
	params.require(:host).permit(:fqdn, :port, :password)
	end
	end