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A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more

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phoenix_kit lib phoenix_kit migrations postgres v05.ex
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lib/phoenix_kit/migrations/postgres/v05.ex 

defmodule PhoenixKit.Migrations.Postgres.V05 do

  @moduledoc """

  PhoenixKit V05 Migration: Add Beneficiary Field to Referral Codes



  This migration adds a beneficiary field to the existing referral codes table

  to track which user should receive benefits when their referral code is used.



  ## Changes



  ### Referral Codes Enhancement

  - Adds beneficiary integer field to phoenix_kit_referral_codes table

  - Allows tracking which user benefits from referral code usage

  - Supports reward/benefit systems for referral programs

  - Maintains backward compatibility with existing referral codes



  ## PostgreSQL Support

  - Supports PostgreSQL prefix for schema isolation

  - Proper field addition with rollback support

  """

  use Ecto.Migration



  @doc """

  Run the V05 migration to add beneficiary field to referral codes table.

  """

  def up(%{prefix: prefix} = _opts) do

    # Add beneficiary column to existing referral_codes table

    alter table(:phoenix_kit_referral_codes, prefix: prefix) do

      add :beneficiary, :integer, null: true

    end



    # Set version comment on phoenix_kit table for version tracking

    execute "COMMENT ON TABLE #{prefix_table_name("phoenix_kit", prefix)} IS '5'"

  end



  # Helper function to build table name with prefix

  defp prefix_table_name(table_name, nil), do: table_name

  defp prefix_table_name(table_name, prefix), do: "#{prefix}.#{table_name}"



  def down(%{prefix: prefix} = _opts) do

    # Remove beneficiary column from referral_codes table

    alter table(:phoenix_kit_referral_codes, prefix: prefix) do

      remove :beneficiary

    end



    # Set version comment back to V04

    execute "COMMENT ON TABLE #{prefix_table_name("phoenix_kit", prefix)} IS '4'"

  end

end