Ash Framework•3mo ago

Supports callback in Ash Validations

Is the supports/1 callback for the validation behaviour no longer available in Ash? Copied and pasted this email validation example from the Ash docs https://hexdocs.pm/ash/validations.html#supporting-queries-in-custom-validations

defmodule MyApp.Validations.Email do
  use Ash.Resource.Validation

  @impl true
  def init(opts) do
    {:ok, opts}
  end

  @impl true
  def supports(_opts), do: [Ash.Changeset, Ash.Query]

  @impl true
  def validate(subject, opts, _context) do
    value = get_value(subject, opts[:attribute])

    if is_nil(value) || valid_email?(value) do
      :ok
    else
      {:error, field: opts[:attribute], message: "must be a valid email"}
    end
  end

  defp get_value(%Ash.Changeset{} = changeset, attribute) do
    Ash.Changeset.get_argument_or_attribute(changeset, attribute)
  end

  defp get_value(%Ash.Query{} = query, attribute) do
    Ash.Query.get_argument(query, attribute)
  end

  defp valid_email?(email) do
    String.match?(email, ~r/^[^\s]+@[^\s]+\.[^\s]+$/)
  end
end

defmodule MyApp.Validations.Email do
  use Ash.Resource.Validation

  @impl true
  def init(opts) do
    {:ok, opts}
  end

  @impl true
  def supports(_opts), do: [Ash.Changeset, Ash.Query]

  @impl true
  def validate(subject, opts, _context) do
    value = get_value(subject, opts[:attribute])

    if is_nil(value) || valid_email?(value) do
      :ok
    else
      {:error, field: opts[:attribute], message: "must be a valid email"}
    end
  end

  defp get_value(%Ash.Changeset{} = changeset, attribute) do
    Ash.Changeset.get_argument_or_attribute(changeset, attribute)
  end

  defp get_value(%Ash.Query{} = query, attribute) do
    Ash.Query.get_argument(query, attribute)
  end

  defp valid_email?(email) do
    String.match?(email, ~r/^[^\s]+@[^\s]+\.[^\s]+$/)
  end
end

but I'm getting this error:

got "@impl true" for function supports/1 but no behaviour specifies such callback. The known callbacks are:

  * Ash.Resource.Validation.atomic/3 (function)
  * Ash.Resource.Validation.atomic?/0 (function)
  * Ash.Resource.Validation.describe/1 (function)
  * Ash.Resource.Validation.has_validate?/0 (function)
  * Ash.Resource.Validation.init/1 (function)
  * Ash.Resource.Validation.validate/3 (function)
Elixir

got "@impl true" for function supports/1 but no behaviour specifies such callback. The known callbacks are:

  * Ash.Resource.Validation.atomic/3 (function)
  * Ash.Resource.Validation.atomic?/0 (function)
  * Ash.Resource.Validation.describe/1 (function)
  * Ash.Resource.Validation.has_validate?/0 (function)
  * Ash.Resource.Validation.init/1 (function)
  * Ash.Resource.Validation.validate/3 (function)
Elixir

Solution:

Latest version of Ash only.

Jump to solution

3 Replies

ZachDaniel•3mo ago

It's brand new

Solution

ZachDaniel•3mo ago

Latest version of Ash only.

Joan GavelánOP•3mo ago

Oh nice, just upgraded and it's working. thanks

Gaming

Programming

Supports callback in Ash Validations

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