akkoma/priv/repo/migrations/20180221210540_make_following_postgres_array.exs

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defmodule Pleroma.Repo.Migrations.MakeFollowingPostgresArray do
use Ecto.Migration
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def up do
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alter table(:users) do
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add(:following_temp, {:array, :string})
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end
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execute("""
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update users set following_temp = array(select jsonb_array_elements_text(following));
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""")
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alter table(:users) do
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remove(:following)
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end
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rename(table(:users), :following_temp, to: :following)
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end
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def down, do: :ok
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end