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A foundation for building Elixir Phoenix apps — SaaS, social networks, ERP systems, marketplaces, and more
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Files
lib/phoenix_kit/migrations/postgres/v142.ex
defmodule PhoenixKit.Migrations.Postgres.V142 do
@moduledoc """
V142: Widen role-permission keys for fine-grained sub-permissions.
Sub-permissions are stored in `phoenix_kit_role_permissions.module_key` as
composed dotted keys (`"calendar.view_others"`). Base and sub parts are
each capped at 50 chars, so a composed key can reach 101 — the original
V53 `VARCHAR(50)` is too narrow. Widen to `VARCHAR(120)`.
All statements are idempotent, safe to re-run.
"""
use Ecto.Migration
def up(opts) do
prefix = Map.get(opts, :prefix, "public")
p = prefix_str(prefix)
execute("""
ALTER TABLE #{p}phoenix_kit_role_permissions
ALTER COLUMN module_key TYPE VARCHAR(120)
""")
execute("COMMENT ON TABLE #{p}phoenix_kit IS '142'")
end
def down(opts) do
prefix = Map.get(opts, :prefix, "public")
p = prefix_str(prefix)
# Dotted sub-permission rows may exceed 50 chars; drop them before
# narrowing so the type change cannot fail mid-rollback. Sub-permission
# grants are additive and re-grantable, so removing them is safe.
execute("""
DELETE FROM #{p}phoenix_kit_role_permissions
WHERE LENGTH(module_key) > 50
""")
execute("""
ALTER TABLE #{p}phoenix_kit_role_permissions
ALTER COLUMN module_key TYPE VARCHAR(50)
""")
execute("COMMENT ON TABLE #{p}phoenix_kit IS '141'")
end
defp prefix_str("public"), do: "public."
defp prefix_str(prefix), do: "#{prefix}."
end