ruby on rails - Paypal express checkout using activemerchant and ipn -


i'm stuck getting activemerchants paypal express ipn notification work.

my workflow looks this:

# authorize payment user gets redirected.. def auth   ...   gateway.setup_authorization(total_as_cents, setup_authorization_params)   ... end  # purchase authorized sum def purchase   ...   purchase_params = {     token: @order.payment_params[:token],     payer_id: @order.payment_params[:payer_id],     currency: current_tenant.currency.unit,     notify_url: paypal_ipn_callback_url   }   response = gateway.purchase(total_as_cents, purchase_params)   ... end

in paypal docs says notify_url deprecated use paymentrequest_n_notifyurl instead. have no clue how tell paypal express gateway.

my ipn callback doesn't called assume notifyurl param doesn't work anymore. paypal in sandbox mode should make no difference right?

any hints?

i believe if using paypal express means doing deep integration system, , don't need ipn, can response 

response = gateway.purchase(total_as_cents, purchase_params)

and information it, , response object 

activemerchant::billing::paypalexpressresponse

the ipn used basic paypal integration, no api calls app, paypal url redirect params.


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