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An HTTP request params accepting library providing atom key conversion, value type converting, validations etc in a plug.

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paramour lib paramour.ex
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lib/paramour.ex

defmodule Paramour do
def traverse_errors(errors, translate_fun) do
Enum.map(errors, &(translate_fun.(&1)))
end
def translate_error({:error, attr, _type, msg}) do
"`#{attr}` #{msg}"
end
end