Steps to reproduce:
1. edit an existing host
2. remove it's name
3. submit

Expected result: Validation Error

Actual result:

Routing Error: No route matches {:action=>"toggle_manage", :controller=>"hosts", :id=>#<Host::Managed id: 1013, name: "", last_compile: nil, last_freshcheck: nil, last_report: nil, updated_at: "2015-02-16 13:48:47", source_file_id: nil, created_at: "2015-02-16 13:48:47", root_pass: "$1$z6u2e8KR$10vMzAGljVnYOiVw1guYh0", serial: nil, puppet_status: 0, architecture_id: 1, operatingsystem_id: 1, environment_id: 1, ptable_id: 7, medium_id: 1, build: true, comment: "", disk: "", installed_at: nil, model_id: nil, hostgroup_id: nil, owner_id: 3, owner_type: "User", enabled: true, puppet_ca_proxy_id: nil, managed: true, use_image: nil, image_file: nil, uuid: nil, compute_resource_id: nil, puppet_proxy_id: nil, certname: nil, image_id: nil, organization_id: 2, location_id: 1, type: "Host::Managed", otp: nil, realm_id: nil, compute_profile_id: nil, provision_method: "build", grub_pass: "$1$a+UhzzpU$mFfRfr2wVfaYIPRlwhIws/">}