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Time zone-related utilities
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lib/changeset.ex
if Code.ensure_loaded?(Ecto.Changeset) do
defmodule TzExtra.Changeset do
require TzExtra.Compiler
def validate_time_zone_id(%Ecto.Changeset{} = changeset, field, opts \\ [])
when is_atom(field) do
opts =
opts
|> Keyword.put(:include_aliases, Keyword.get(opts, :allow_alias, false))
Ecto.Changeset.validate_change(changeset, field, :time_zone_id, fn _field, value ->
if Enum.member?(TzExtra.time_zone_ids(opts), value),
do: [],
else: [
{field, {message(opts, "is not a valid time zone"), [validation: :time_zone_id]}}
]
end)
end
def validate_civil_time_zone_id(%Ecto.Changeset{} = changeset, field, opts \\ [])
when is_atom(field) do
opts =
opts
|> Keyword.put(:include_aliases, Keyword.get(opts, :allow_alias, false))
Ecto.Changeset.validate_change(changeset, field, :civil_time_zone_id, fn _field, value ->
if Enum.member?(TzExtra.civil_time_zone_ids(opts), value),
do: [],
else: [
{field,
{message(opts, "is not a valid time zone"), [validation: :civil_time_zone_id]}}
]
end)
end
def validate_iso_country_code(%Ecto.Changeset{} = changeset, field, opts \\ [])
when is_atom(field) do
Ecto.Changeset.validate_change(changeset, field, :iso_country_code, fn _field, value ->
if Enum.any?(TzExtra.countries(), fn %{code: country_code} -> country_code == value end),
do: [],
else: [
{field,
{message(opts, "is not a valid country code"), [validation: :iso_country_code]}}
]
end)
end
defp message(opts, key \\ :message, default) do
Keyword.get(opts, key, default)
end
end
end