Maxfield Luke
af6077b9c3
Fresh repository history for elektrine/tarakan hosted at https://git.elektrine.com/elektrine/tarakan.
22 lines
859 B
Elixir
22 lines
859 B
Elixir
defmodule Tarakan.Repo.Migrations.CreateVotes do
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use Ecto.Migration
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def change do
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create table(:votes) do
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add :account_id, references(:accounts, on_delete: :delete_all), null: false
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# Polymorphic by (subject_type, subject_id): "finding" -> scan_findings,
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# "comment" -> finding_comments. Kept generic so new votable kinds don't
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# need a new table.
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add :subject_type, :string, null: false
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add :subject_id, :bigint, null: false
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add :value, :integer, null: false
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timestamps(type: :utc_datetime_usec)
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end
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# One standing vote per account per item; recasting updates value.
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create unique_index(:votes, [:account_id, :subject_type, :subject_id])
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create index(:votes, [:subject_type, :subject_id])
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create constraint(:votes, :votes_value_must_be_unit, check: "value IN (-1, 1)")
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end
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end
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