Elavon

A native USBank Elavon Converge elixir client. This library only supports a fraction of the full Elavon API, however what is written is production ready.

Installation

Add elavon to your list of dependencies in mix.exs and run mix deps.get:

def deps do
  [
    {:elavon, "~> 0.1.0"}
  ]
end

Configuration

After elavon is installed, you'll need to add the appropriate configuration:

  config :elavon,
    environment: :sandbox,
    transaction_module: Elavon.Transaction.HTTP,
    ssl_merchant_id: System.get_env("ELAVON_MERCHANT_ID"),
    ssl_user_id: System.get_env("ELAVON_USER_ID"),
    ssl_pin: System.get_env("ELAVON_PIN"),
    custom_fields: [:Site, :EDate, :SDate]

The environment defaults to :sandbox, but you'll want to change it to :production in your prod.exs file.

The transaction module is configurable so that you can create a mock module for testing if necessary. For example:

  # Create Elavon.Transaction.Mock module
  defmodule Elavon.Transaction.Mock do
    def sale(params, opts) do
      # return a mocked response
    end
  end

  # Update test.exs config file:
  config :elavon,
    transaction_module: Elavon.Transaction.Mock

The custom fields configuration option allows you to specify any custom fields you've defined on your account, which you'd like to be returned as part of the transaction response.

Usage

The test cards are not listed in the documentation and they may change in future. Here are the current mastercard and visa test card numbers:

VISA: 4124939999999990

  params = %{
    ssl_card_number: 4124939999999990,
    ssl_cvv2cvc2_indicator: 1,
    ssl_cvv2cvc2: 123,
    ssl_amount: 10.00,
    ssl_exp_date: 1220,
    ssl_invoice_number: to_string(Enum.take_random(?a..?z, 20))
  }

  case Elavon.sale(params) do
    {:ok, %Elavon.Transaction{} = transaction} -> do_something_with_transaction(transaction)
    {:error, %Elavon.Exception{} = error} -> report_error(error)
    {:error, %HTTPoison{id: nil, reason: :timeout}} -> handle_timeout()
  end

Premium Support

Elavon, as an open source project, is free to use and always will be. Infinite Red offers premium Elavon support and general web & mobile app design/development services. Get in touch here or email us at hello@infinite.red.