Go
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PayPal - Authorize a Payment
See more PayPal Examples
Creates an authorization for a payment. This is for the case where the payment will first be authorized, and then captured at a later date. (In other words, the buyer is providing his/her credit card information now, and the actual charge (capture) will take place at a later time.)Creating the authorization is the same as creating "sale" payment, except the intent is set to "authorize" instead of "sale".
This example requests an authorization for a credit card payment (using a credit card ID previoulsy stored in the PayPal vault).
Note: This example requires Chilkat v9.5.0.65 or greater.
Chilkat Go Downloads
success := false
// Note: Requires Chilkat v9.5.0.65 or greater.
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// Load our previously obtained access token. (see PayPal OAuth2 Access Token)
jsonToken := chilkat.NewJsonObject()
jsonToken.LoadFile("qa_data/tokens/paypal.json")
// Build the Authorization request header field value.
sbAuth := chilkat.NewStringBuilder()
// token_type should be "Bearer"
sbAuth.Append(*jsonToken.StringOf("token_type"))
sbAuth.Append(" ")
sbAuth.Append(*jsonToken.StringOf("access_token"))
// Make the initial connection.
// A single REST object, once connected, can be used for many PayPal REST API calls.
// The auto-reconnect indicates that if the already-established HTTPS connection is closed,
// then it will be automatically re-established as needed.
rest := chilkat.NewRest()
bAutoReconnect := true
success = rest.Connect("api.sandbox.paypal.com",443,true,bAutoReconnect)
if success != true {
fmt.Println(rest.LastErrorText())
jsonToken.DisposeJsonObject()
sbAuth.DisposeStringBuilder()
rest.DisposeRest()
return
}
// ----------------------------------------------------------------------------------------------
// The code above this comment could be placed inside a function/subroutine within the application
// because the connection does not need to be made for every request. Once the connection is made
// the app may send many requests..
// ----------------------------------------------------------------------------------------------
// Build the JSON containing the transaction information.
json := chilkat.NewJsonObject()
json.SetEmitCompact(false)
json.UpdateString("intent","authorize")
json.UpdateString("payer.payment_method","credit_card")
json.UpdateString("payer.funding_instruments[0].credit_card_token.credit_card_id","CARD-52W84623JH8043102LA3CLGA")
json.UpdateString("payer.funding_instruments[0].credit_card_token.payer_id","user12345")
json.UpdateString("transactions[0].amount.total","6.70")
json.UpdateString("transactions[0].amount.currency","USD")
json.UpdateString("transactions[0].description","This is the payment transaction description.")
fmt.Println(*json.Emit())
// The JSON created by the above code is this:
// {
// "intent": "authorize",
// "payer": {
// "payment_method": "credit_card",
// "funding_instruments": [
// {
// "credit_card_token": {
// "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
// "payer_id": "user12345"
// }
// }
// ]
// },
// "transactions": [
// {
// "amount": {
// "total": "6.70",
// "currency": "USD"
// },
// "description": "This is the payment transaction description."
// }
// ]
// }
rest.AddHeader("Authorization",*sbAuth.GetAsString())
rest.AddHeader("Content-Type","application/json")
// Send the POST request containign the JSON in the request body, and get the JSON response.
sbJsonRequest := chilkat.NewStringBuilder()
json.SetEmitCompact(true)
json.EmitSb(sbJsonRequest)
sbJsonResponse := chilkat.NewStringBuilder()
success = rest.FullRequestSb("POST","/v1/payments/payment",sbJsonRequest,sbJsonResponse)
if success != true {
fmt.Println(rest.LastErrorText())
jsonToken.DisposeJsonObject()
sbAuth.DisposeStringBuilder()
rest.DisposeRest()
json.DisposeJsonObject()
sbJsonRequest.DisposeStringBuilder()
sbJsonResponse.DisposeStringBuilder()
return
}
json.SetEmitCompact(false)
json.LoadSb(sbJsonResponse)
fmt.Println("Response Status Code = ", rest.ResponseStatusCode())
// Did we get a 201 success response?
if rest.ResponseStatusCode() != 201 {
fmt.Println(*json.Emit())
fmt.Println("Failed.")
jsonToken.DisposeJsonObject()
sbAuth.DisposeStringBuilder()
rest.DisposeRest()
json.DisposeJsonObject()
sbJsonRequest.DisposeStringBuilder()
sbJsonResponse.DisposeStringBuilder()
return
}
// Sample JSON response is shown below.
fmt.Println(*json.Emit())
// The authorization ID found in the related_resources is used to capture the payment at a later time.
fmt.Println("authorization id: ", *json.StringOf("transactions[0].related_resources[0].authorization.id"))
fmt.Println("success")
// ------------------------------------------------
// A sample JSON response:
// {
// "id": "PAY-2CY489250W145633HLA3DK3Y",
// "create_time": "2016-11-24T00:33:51Z",
// "update_time": "2016-11-24T00:33:58Z",
// "state": "approved",
// "intent": "authorize",
// "payer": {
// "payment_method": "credit_card",
// "funding_instruments": [
// {
// "credit_card_token": {
// "credit_card_id": "CARD-52W84623JH8043102LA3CLGA",
// "payer_id": "user12345",
// "last4": "9974",
// "type": "visa",
// "expire_month": "9",
// "expire_year": "2021"
// }
// }
// ]
// },
// "transactions": [
// {
// "amount": {
// "total": "6.70",
// "currency": "USD",
// "details": {
// "subtotal": "6.70"
// }
// },
// "description": "This is the payment transaction description.",
// "related_resources": [
// {
// "authorization": {
// "id": "7X8332687A4929542",
// "create_time": "2016-11-24T00:33:51Z",
// "update_time": "2016-11-24T00:33:58Z",
// "amount": {
// "total": "6.70",
// "currency": "USD",
// "details": {
// "subtotal": "6.70"
// }
// },
// "state": "authorized",
// "parent_payment": "PAY-2CY489250W145633HLA3DK3Y",
// "valid_until": "2016-12-23T00:33:51Z",
// "links": [
// {
// "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542",
// "rel": "self",
// "method": "GET"
// },
// {
// "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542/capture",
// "rel": "capture",
// "method": "POST"
// },
// {
// "href": "https://api.sandbox.paypal.com/v1/payments/authorization/7X8332687A4929542/void",
// "rel": "void",
// "method": "POST"
// },
// {
// "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
// "rel": "parent_payment",
// "method": "GET"
// }
// ],
// "processor_response": {
// "avs_code": "X",
// "cvv_code": "M"
// },
// "fmf_details": {}
// }
// }
// ]
// }
// ],
// "links": [
// {
// "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
// "rel": "self",
// "method": "GET"
// }
// ]
// }
jsonToken.DisposeJsonObject()
sbAuth.DisposeStringBuilder()
rest.DisposeRest()
json.DisposeJsonObject()
sbJsonRequest.DisposeStringBuilder()
sbJsonResponse.DisposeStringBuilder()