Plugins » Katello

Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1102382
Description of problem:
A back-end error is occurring when trying to view any of the hosts registered to the Satellite.

Version-Release number of selected component (if applicable):
foreman-1.6.0.13-1.el6sat.noarch
foreman-compute-1.6.0.13-1.el6sat.noarch
foreman-gce-1.6.0.13-1.el6sat.noarch
foreman-libvirt-1.6.0.13-1.el6sat.noarch
foreman-ovirt-1.6.0.13-1.el6sat.noarch
foreman-postgresql-1.6.0.13-1.el6sat.noarch
foreman-proxy-1.6.0.6-1.el6sat.noarch
foreman-vmware-1.6.0.13-1.el6sat.noarch
katello-1.5.0-25.el6sat.noarch
katello-ca-1.0-1.noarch
katello-certs-tools-1.5.5-1.el6sat.noarch
katello-installer-0.0.44-1.el6sat.noarch
pulp-katello-plugins-0.3-1.el6sat.noarch
ruby193-rubygem-foreman_bootdisk-2.0.6-1.1.el6sat.noarch
ruby193-rubygem-foreman_discovery-1.3.0-0.1.rc2.el6sat.noarch
ruby193-rubygem-foreman_hooks-0.3.5-2.el6sat.noarch
ruby193-rubygem-foreman-redhat_access-0.0.4-1.el6sat.noarch
ruby193-rubygem-foreman-tasks-0.5.7-2.el6sat.noarch
ruby193-rubygem-katello-1.5.0-50.el6sat.noarch
rubygem-hammer_cli_foreman-0.1.1-5.el6sat.noarch
rubygem-hammer_cli_foreman_tasks-0.0.3-2.el6sat.noarch
rubygem-hammer_cli_katello-0.0.4-4.el6sat.noarch

How reproducible:
Unknown

Steps to Reproduce:
1. Register a host to the system with puppet (sign cert, etc)
2. Visit all hosts page
3. Click the satellite itself, or your registered host

Actual results:
A back-end error occurs:
NoMethodError
undefined method `association_class' for nil:NilClass
app/views/hosts/show.html.erb:20:in `_app_views_hosts_show_html_erb___29573875474748083_92045900'
app/models/concerns/foreman/thread_session.rb:33:in `clear_thread'
lib/middleware/catch_json_parse_errors.rb:9:in `call'

Processing by HostsController#show as HTML
Parameters: {"id"=>"client-10.ejacobs.local"}
Deface: 1 overrides found for 'hosts/show'
Deface: 'add_system_link_to_host' matched 1 times with 'td:first'
Rendered hosts/show.html.erb within layouts/application (26.7ms)
Operation FAILED: undefined method `association_class' for nil:NilClass
Rendered common/500.html.erb within layouts/application (4.6ms)
Rendered layouts/base.html.erb (1.1ms)
Completed 500 Internal Server Error in 53ms (Views: 10.3ms | ActiveRecord: 2.1ms)

Expected results:
The host "show" page should be displayed.

Additional info: