app/models/vm_performance.rb
class VmPerformance < MetricRollup
default_scope { where(:resource_type => 'VmOrTemplate').where.not(:resource_id => nil) }
belongs_to :host, :foreign_key => :parent_host_id
belongs_to :ems_cluster, :foreign_key => :parent_ems_cluster_id
belongs_to :storage, :foreign_key => :parent_storage_id
belongs_to :vm, :foreign_key => :resource_id, :class_name => 'VmOrTemplate'
def self.display_name(number = 1)
n_('Performance - VM', 'Performance - VMs', number)
end
end