error

where_error.exs

  defp escape(expr, type, params, binding, env) when is_list(expr) do
    {parts, params} =
    Enum.map_reduce(expr, %{}, fn {field, value}, acc ->
        {value, params} = Builder.escape(value, {0, field}, acc, binding, env)
        {{:==, [], [to_field(field), value]}, params}
    end)
    IO.inspect parts

    expr = Enum.reduce parts, &{:and, [], [&1, &2]}
    {expr, params}
  end

q = where(FishLanded, [], [length: 10, weight: 1, fisherman_id: 1])
[{:==, [],
  [{{:., [], [{:&, [], [0]}, :length]}, [], []},
   {:%, [], [Ecto.Query.Tagged, {:%{}, [], [value: 10, type: {0, :length}]}]}]},
 {:==, [],
  [{{:., [], [{:&, [], [0]}, :weight]}, [], []},
   {:%, [], [Ecto.Query.Tagged, {:%{}, [], [value: 1, type: {0, :weight}]}]}]},
 {:==, [],
  [{{:., [], [{:&, [], [0]}, :fisherman_id]}, [], []},
   {:%, [],
    [Ecto.Query.Tagged, {:%{}, [], [value: 1, type: {0, :fisherman_id}]}]}]}]
** (CompileError) iex:1: unhandled &0 outside of a capture
    (stdlib) lists.erl:1353: :lists.mapfoldl/3
    (stdlib) lists.erl:1353: :lists.mapfoldl/3