Midtrans

If you building application with Elixir Phoenix and want to use midtrans as your payment gateway, this is the easiest way to implement it on server side with redirection to payment page.

How to use

Create config inside your dev.exs (and prod.secret.exs accordingly when goes into production)

  config :midtrans, 
          is_active: true,
          url: "https://app.sandbox.midtrans.com/snap/v1/transactions",
          client_key: "SB-Mid-client-JHnLjiXe9eb47eFX",
          server_key: "SB-Mid-server-YY_hqXAGhzyD3iFNf42npUEX",
          merchant_id: "M10442X"

Get your SERVER_KEY from midtrans configuration page.

Create a Map containing your transaction detail. You can follow this documentation for refference. But the minimum can be made as follow:

payload =
  %{"transaction_details" =>
    %{"order_id" => "ORDER-101",
      "gross_amount" => 10000
    }
  }

Call the function to get the redirect URL

   Midtrans.get_token(:sandbox, payload, your_server_key)

for prod, just switch to prod

   Midtrans.get_token(:prod, payload, your_server_key)

You will receive following response:

{:ok,
  %{
    "redirect_url" => "https://app.sandbox.midtrans.com/snap/v2/vtweb/f2fa54e2-5230-4860-b7e5-31c2e74ceaxx",
    "token" => "f2fa54e2-5230-4860-b7e5-31c2e74ceaxx"
  }}

or if something goes wrong

 %{:error, "The reason of the error."}

Then simply ask your controller to redirect to that redirect_url.

Assuming you already configure the URL correctly in your config. That's all you need to do.

Installation

Currently not yet published into Hex. You can fetch directly from github:

def deps do
  [
    {:midtrans, git: "https://github.com/virkillz/midtrans.git", tag: "0.1.0"}
  ]
end

Then run

mix deps.get