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lib/ecto/virtual.ex
defmodule Rivet.Utils.Ecto.Virtual do
@moduledoc """
Custom Type to support any virtual data. Always serializes to nil, so when
including it as a field add virtual: true.
Contributor: Brandon Gillespie
"""
@type t :: term()
@behaviour Ecto.Type
def type, do: :binary
def embed_as(_), do: :self
def cast(value), do: {:ok, value}
def load(value), do: {:ok, value}
def dump(_), do: {:ok, nil}
def equal?(a, b), do: a == b
end