app/views/admin/events/_parent.html.erb
<% if administrator? && !@event.new_record? -%>
<%- if @event.missing_parent? -%>
<p>
This event has no parent.
<%= link_to"Set it to the #{@event.missing_parent.friendly_class_name} #{@event.missing_parent.name}",
{action: 'set_parent', parent_id: @event.missing_parent.id, child_id: @event.id},
class: 'obvious', id: 'set_parent' %>.
</p>
<%- elsif @event.missing_children? -%>
<p>
There are <%= pluralize(@event.missing_children.size, 'event') %> named <%= @event.name %> that aren't children of this
<%= @event.friendly_class_name %>.
<%= link_to "Add #{pluralize(@event.missing_children.size, 'child')}",
{action: 'add_children', parent_id: @event.id,},
class: 'obvious' %>.
</p>
<%- end -%>
<%- if @event.multi_day_event_children_with_no_parent? -%>
<p>
Found <%= pluralize(@event.multi_day_event_children_with_no_parent.size, 'event') %> named <%= @event.name %>.
<%= link_to "Make a parent #{MultiDayEvent.guess_type(@event.multi_day_event_children_with_no_parent).friendly_class_name}",
{action: 'create_from_children', id: @event.id},
class: 'obvious' %>.
</p>
<%- end -%>
<%- end -%>