Visual FoxPro

PayPal - Create a PayPal Payment

See more PayPal Examples

Creates a payment to be paid from a PayPal account (as opposed to being funded by a credit card).

Note: This example requires Chilkat v9.5.0.65 or greater.

Visual FoxPro

LOCAL lnSuccess
LOCAL loJsonToken
LOCAL loSbAuth
LOCAL loRest
LOCAL lnBAutoReconnect
LOCAL loJson
LOCAL loSbJsonRequest
LOCAL loSbJsonResponse

lnSuccess = 0

*  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)
loJsonToken = CreateObject('Chilkat.JsonObject')
loJsonToken.LoadFile("qa_data/tokens/paypal.json")

*  Build the Authorization request header field value.
loSbAuth = CreateObject('Chilkat.StringBuilder')
*  token_type should be "Bearer"
loSbAuth.Append(loJsonToken.StringOf("token_type"))
loSbAuth.Append(" ")
loSbAuth.Append(loJsonToken.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.
loRest = CreateObject('Chilkat.Rest')
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("api.sandbox.paypal.com",443,1,lnBAutoReconnect)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loJsonToken
    RELEASE loSbAuth
    RELEASE loRest
    CANCEL
ENDIF

*  ----------------------------------------------------------------------------------------------
*  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.
loJson = CreateObject('Chilkat.JsonObject')
loJson.EmitCompact = 0
loJson.UpdateString("intent","sale")
loJson.UpdateString("redirect_urls.return_url","http://www.example.com/return_url")
loJson.UpdateString("redirect_urls.cancel_url","http://www.example.com/cancel_url")
loJson.UpdateString("payer.payment_method","paypal")
loJson.UpdateString("transactions[0].amount.total","7.47")
loJson.UpdateString("transactions[0].amount.currency","USD")
loJson.UpdateString("transactions[0].description","This is the payment transaction description.")

? loJson.Emit()

*  The JSON created by the above code is this:

*  	{ 
*  	  "intent": "sale",
*  	  "redirect_urls": { 
*  	    "return_url": "http://www.example.com/return_url",
*  	    "cancel_url": "http://www.example.com/cancel_url"
*  	  },
*  	  "payer": { 
*  	    "payment_method": "paypal"
*  	  },
*  	  "transactions": [
*  	    { 
*  	      "amount": { 
*  	        "total": "7.47",
*  	        "currency": "USD"
*  	      },
*  	      "description": "This is the payment transaction description."
*  	    }
*  	  ]
*  	}

loRest.AddHeader("Authorization",loSbAuth.GetAsString())
loRest.AddHeader("Content-Type","application/json")

*  Send the POST request containign the JSON in the request body, and get the JSON response.
loSbJsonRequest = CreateObject('Chilkat.StringBuilder')
loJson.EmitCompact = 1
loJson.EmitSb(loSbJsonRequest)
loSbJsonResponse = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestSb("POST","/v1/payments/payment",loSbJsonRequest,loSbJsonResponse)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loJsonToken
    RELEASE loSbAuth
    RELEASE loRest
    RELEASE loJson
    RELEASE loSbJsonRequest
    RELEASE loSbJsonResponse
    CANCEL
ENDIF

loJson.EmitCompact = 0
loJson.LoadSb(loSbJsonResponse)

? "Response Status Code = " + STR(loRest.ResponseStatusCode)

*  Did we get a 201 success response?
IF (loRest.ResponseStatusCode <> 201) THEN
    ? loJson.Emit()
    ? "Failed."
    RELEASE loJsonToken
    RELEASE loSbAuth
    RELEASE loRest
    RELEASE loJson
    RELEASE loSbJsonRequest
    RELEASE loSbJsonResponse
    CANCEL
ENDIF

*  Sample JSON response is shown below.
? loJson.Emit()
? "success"

*  ------------------------------------------------
*  A sample JSON response:

*  	{ 
*  	  "id": "PAY-1XK50350XV338620BLA3CZGI",
*  	  "intent": "sale",
*  	  "state": "created",
*  	  "payer": { 
*  	    "payment_method": "paypal",
*  	    "use_vendor_currency_conversion": false
*  	  },
*  	  "transactions": [
*  	    { 
*  	      "amount": { 
*  	        "total": "7.47",
*  	        "currency": "USD"
*  	      },
*  	      "description": "This is the payment transaction description.",
*  	      "related_resources": [
*  	      ]
*  	    }
*  	  ],
*  	  "create_time": "2016-11-23T23:56:09Z",
*  	  "links": [
*  	    { 
*  	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-1XK50350XV338620BLA3CZGI",
*  	      "rel": "self",
*  	      "method": "GET"
*  	    },
*  	    { 
*  	      "href": "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-0BG932459F977083J",
*  	      "rel": "approval_url",
*  	      "method": "REDIRECT"
*  	    },
*  	    { 
*  	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-1XK50350XV338620BLA3CZGI/execute",
*  	      "rel": "execute",
*  	      "method": "POST"
*  	    }
*  	  ]
*  	}

RELEASE loJsonToken
RELEASE loSbAuth
RELEASE loRest
RELEASE loJson
RELEASE loSbJsonRequest
RELEASE loSbJsonResponse