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phoenix_kit
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A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more
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Files
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Files
lib/phoenix_kit/migrations/postgres/v89.ex
defmodule PhoenixKit.Migrations.Postgres.V89 do
@moduledoc """
V89: Catalogue pricing — rename price to base_price, add markup_percentage.
Changes:
- Rename `price` to `base_price` in `phoenix_kit_cat_items`
- Add `markup_percentage` decimal column to `phoenix_kit_cat_catalogues`
"""
use Ecto.Migration
def up(opts) do
prefix = Map.get(opts, :prefix, "public")
p = prefix_str(prefix)
schema = if prefix == "public", do: "public", else: prefix
execute("""
DO $$
BEGIN
-- Rename price to base_price in items
IF EXISTS (
SELECT FROM information_schema.columns
WHERE table_schema = '#{schema}'
AND table_name = 'phoenix_kit_cat_items'
AND column_name = 'price'
) THEN
ALTER TABLE #{p}phoenix_kit_cat_items
RENAME COLUMN price TO base_price;
END IF;
-- Add markup_percentage to catalogues
IF EXISTS (
SELECT FROM information_schema.tables
WHERE table_schema = '#{schema}' AND table_name = 'phoenix_kit_cat_catalogues'
) AND NOT EXISTS (
SELECT FROM information_schema.columns
WHERE table_schema = '#{schema}'
AND table_name = 'phoenix_kit_cat_catalogues'
AND column_name = 'markup_percentage'
) THEN
ALTER TABLE #{p}phoenix_kit_cat_catalogues
ADD COLUMN markup_percentage DECIMAL(7, 2) NOT NULL DEFAULT 0;
END IF;
END $$;
""")
execute("COMMENT ON TABLE #{p}phoenix_kit IS '89'")
end
def down(opts) do
prefix = Map.get(opts, :prefix, "public")
p = prefix_str(prefix)
schema = if prefix == "public", do: "public", else: prefix
execute("""
DO $$
BEGIN
-- Rename base_price back to price in items
IF EXISTS (
SELECT FROM information_schema.columns
WHERE table_schema = '#{schema}'
AND table_name = 'phoenix_kit_cat_items'
AND column_name = 'base_price'
) THEN
ALTER TABLE #{p}phoenix_kit_cat_items
RENAME COLUMN base_price TO price;
END IF;
-- Drop markup_percentage from catalogues
IF EXISTS (
SELECT FROM information_schema.columns
WHERE table_schema = '#{schema}'
AND table_name = 'phoenix_kit_cat_catalogues'
AND column_name = 'markup_percentage'
) THEN
ALTER TABLE #{p}phoenix_kit_cat_catalogues
DROP COLUMN markup_percentage;
END IF;
END $$;
""")
execute("COMMENT ON TABLE #{p}phoenix_kit IS '88'")
end
defp prefix_str("public"), do: "public."
defp prefix_str(prefix), do: "#{prefix}."
end