mirror of
https://github.com/ash-project/ash_postgres.git
synced 2024-09-20 21:43:12 +12:00
65 lines
1.5 KiB
Elixir
65 lines
1.5 KiB
Elixir
|
defmodule AshPostgres.Test.ComplexCalculations.Channel do
|
||
|
@moduledoc false
|
||
|
use Ash.Resource,
|
||
|
data_layer: AshPostgres.DataLayer,
|
||
|
authorizers: [Ash.Policy.Authorizer]
|
||
|
|
||
|
require Ash.Expr
|
||
|
|
||
|
actions do
|
||
|
defaults([:create, :read, :update, :destroy])
|
||
|
end
|
||
|
|
||
|
attributes do
|
||
|
uuid_primary_key(:id)
|
||
|
|
||
|
create_timestamp(:created_at, private?: false)
|
||
|
update_timestamp(:updated_at, private?: false)
|
||
|
end
|
||
|
|
||
|
postgres do
|
||
|
table "complex_calculations_channels"
|
||
|
repo(AshPostgres.TestRepo)
|
||
|
end
|
||
|
|
||
|
relationships do
|
||
|
has_many(:channel_members, AshPostgres.Test.ComplexCalculations.ChannelMember)
|
||
|
|
||
|
has_one :first_member, AshPostgres.Test.ComplexCalculations.ChannelMember do
|
||
|
destination_attribute(:channel_id)
|
||
|
from_many?(true)
|
||
|
sort(created_at: :asc)
|
||
|
end
|
||
|
|
||
|
has_one :second_member, AshPostgres.Test.ComplexCalculations.ChannelMember do
|
||
|
destination_attribute(:channel_id)
|
||
|
from_many?(true)
|
||
|
sort(created_at: :desc)
|
||
|
end
|
||
|
end
|
||
|
|
||
|
aggregates do
|
||
|
first(:first_member_name, [:first_member, :user], :name)
|
||
|
first(:second_member_name, [:second_member, :user], :name)
|
||
|
end
|
||
|
|
||
|
calculations do
|
||
|
calculate :name, :string do
|
||
|
calculation(
|
||
|
expr(
|
||
|
cond do
|
||
|
first_member.user_id == ^actor(:id) ->
|
||
|
second_member_name
|
||
|
|
||
|
second_member.user_id == ^actor(:id) ->
|
||
|
first_member_name
|
||
|
|
||
|
true ->
|
||
|
first_member_name <> ", " <> second_member_name
|
||
|
end
|
||
|
)
|
||
|
)
|
||
|
end
|
||
|
end
|
||
|
end
|