Portmeirion.IdentifyController V5

identify_controller.ex

defp where_clause(query, params) do
  allowed_params = ~w(login_id facebook_id device_id prism_id)

  key_values = params
  |> Enum.filter(fn({key, _}) -> Enum.member?(allowed_params, key) end)
  |> Enum.map(fn({key, value}) -> {String.to_existing_atom(key), cast_param(key, value)} end) # or_where expects list of tuples
  |> Enum.sort # Ensure device_id is always first if present

  where_fragment(query, key_values)
end

defp where_fragment(query, [{:device_id, device_id} | other_filters]) do
  from [u, d] in query,
  where: d.device_id == ^device_id,
  or_where: ^other_filters
end
defp where_fragment(query, filters) do
  from u in query,
  or_where: ^filters
end