CkPython

PayPal Generate QR Code

See more PayPal Examples

Generates a QR code for an invoice, by ID.

The QR code is a PNG image in Base64-encoded format that corresponds to the invoice ID.

Note: A QR code can only be generated for an invoice that has been both created and sent.

See also Generate QR Code

CkPython

import sys
import chilkat

success = False

# Note: Requires Chilkat v9.5.0.64 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.CkJsonObject()
jsonToken.LoadFile("qa_data/tokens/paypal.json")

# Build the Authorization request header field value.
sbAuth = chilkat.CkStringBuilder()
# 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.CkRest()
bAutoReconnect = True
success = rest.Connect("api.sandbox.paypal.com",443,True,bAutoReconnect)
if (success != True):
    print(rest.lastErrorText())
    sys.exit()

# ----------------------------------------------------------------------------------------------
# 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 a path using an invoice ID.
sbPath = chilkat.CkStringBuilder()
sbPath.Append("/v1/invoicing/invoices/invoice_id/qr-code")
numReplacements = sbPath.Replace("invoice_id","INV2-ZG2H-HKAW-PMWU-N6ZR")

rest.AddHeader("Authorization",sbAuth.getAsString())
# A 500x500 image results in a PNG file of approx. 4K bytes in size.
rest.AddQueryParam("width","500")
rest.AddQueryParam("height","500")
rest.AddQueryParam("action","pay")

# Send the GET request and get the PNG image data as base64.
# A successful JSON response looks like this:
# {"image":"iVBORw0KGgoAA....AASUVORK5CYII="}
sbJsonResponse = chilkat.CkStringBuilder()
success = rest.FullRequestNoBodySb("GET",sbPath.getAsString(),sbJsonResponse)
if (success != True):
    print(rest.lastErrorText())
    sys.exit()

json = chilkat.CkJsonObject()
json.put_EmitCompact(False)
json.LoadSb(sbJsonResponse)

print("Response Status Code = " + str(rest.get_ResponseStatusCode()))

# Did we get a 200 success response?
if (rest.get_ResponseStatusCode() != 200):
    print(json.emit())
    print("Failed.")
    sys.exit()

# If the 200 response is received, the response body contains the PNG data.
# Save the PNG to a file.
pngData = chilkat.CkBinData()
pngData.AppendEncoded(json.stringOf("image"),"base64")
success = pngData.WriteFile("qa_output/paypal_qr_code.png")
if (success == False):
    print("Failed to save PNG file.")
    sys.exit()

print("Success.")