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Fix ordering by VMs in NetworkManagers list #14092

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merged 2 commits into from
Mar 1, 2017
Merged

Fix ordering by VMs in NetworkManagers list #14092

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5c835d4
Fix ordering by VMs in NetworkManagers list
Ladas Feb 28, 2017
e2c1e8a
Reformat the comment nicely
Ladas Feb 28, 2017
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22 changes: 22 additions & 0 deletions app/models/manageiq/providers/network_manager.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,28 @@ class << model_name
has_many :load_balancer_health_checks, :foreign_key => :ems_id, :dependent => :destroy
has_many :load_balancer_health_check_members, :through => :load_balancer_health_checks

# Uses "ext_management_systems"."parent_ems_id" instead of "ext_management_systems"."id"
#
# ORDER BY ((
# SELECT COUNT(*)
# FROM "vms"
# WHERE "ext_management_systems"."parent_ems_id" = "vms"."ems_id"
# ))
#
# So unlike the parent class definition, this looks at "ext_management_systems"."parent_ems_id" instead of
# "ext_management_systems"."id"
# If we are able to define a has_many :vms, :through => :parent_manager, that does actual join, this code should
# not be needed.
virtual_total :total_vms, :vms, {
:arel => lambda do |t|
foreign_table = Vm.arel_table
local_key = :parent_ems_id
foreign_key = :ems_id
arel_column = Arel.star.count
t.grouping(foreign_table.project(arel_column).where(t[local_key].eq(foreign_table[foreign_key])))
end
}

alias all_cloud_networks cloud_networks

belongs_to :parent_manager,
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