a69b771847
We move from start/end date to a period date range to represent the interval where a training take place. Besides that, new constraints are added to ensure a trainings of a user can't overlap. These constraints reflect in changeset validation.
47 lines
1.1 KiB
Elixir
47 lines
1.1 KiB
Elixir
defmodule Wabanex.Repo.Migrations.AlterTrainingsAddPeriod do
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use Ecto.Migration
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def up do
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alter table(:trainings) do
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add :period, :daterange
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end
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execute("""
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update trainings set
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period=daterange(start_date, end_date, '[)')
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, updated_at=date_trunc('second', current_timestamp::timestamp)
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""")
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alter table(:trainings) do
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remove :start_date
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remove :end_date
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modify :period, :daterange, null: false
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end
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create constraint(:trainings, :non_overlap_period,
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exclude: "gist (user_id WITH =, period with &&)"
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)
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end
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def down do
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alter table(:trainings) do
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add :start_date, :date
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add :end_date, :date
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end
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execute("""
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update trainings set
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start_date=lower(period)
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, end_date=upper(period)
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, update_at=date_trunc('second', current_timestamp::timestamp)
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""")
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drop constraint(:trainings, :non_overlap_period)
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alter table(:trainings) do
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remove :period
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modify :start_date, :date, null: false
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end
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end
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end
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