PayPal Server, Generate authorization token to process order #-Python Django 28

We are going to generate the access token to be able to process the order.

Now that our keys have been generated here, recapitulating a little, and here is also the access URL. The next point is to start making the connection. In this case, as I mentioned before approving the order, we are going to require an access token. This is something more or less common, but instead of sending the user password, which would be the Secret, and the client, we send it the token, the authorization token when we make a request. That is basically why this token is required. So, having clarified that, as I mentioned, we are going to implement it here, so we are going to create a method for the access token.

mystore\elements\views.py

import requests
from django.conf import settings
from django.http import JsonResponse

class PayPalPayment:
   def __init__(self):
       self.client_id = settings.PAYPAL_CLIENT_ID
       self.secret = settings.PAYPAL_SECRET
       self.base_url = settings.PAYPAL_BASE_URL

   def get_access_token(self):
       url = f"{self.base_url}/v1/oauth2/token"
       headers = {
           "Accept": "application/json",
           "Content-Type": "application/x-www-form-urlencoded",
       }
       data = {"grant_type": "client_credentials"}

       response = requests.post(url, auth=(self.client_id, self.secret), data=data, headers=headers)

       if response.status_code == 200:
           return response.json().get("access_token")
       else:
           return None

As important points we have to add the URL to which we must make the request:

url = f"{self.base_url}/v1/oauth2/token"

The headers, to indicate that a response is returned in JSON format and that the request is sent NOT as a JSON request but as if it were a form:

headers = {
   "Accept": "application/json",
    "Content-Type": "application/x-www-form-urlencoded",
}

We indicate that the request is to generate the access token:

data = {"grant_type": "client_credentials"}

We build the request, which is of the POST type, and provide the previous data:

response = requests.post(url, auth=(self.client_id, self.secret), data=data, headers=headers)

With:

return response.json()

We get the entire response, which is JSON format as configured previously, we are only interested in the token that is registered in:

return response.json().get("access_token")

We also verify that the request status is 200, which indicates that the token was generated successfully. Any other status indicates that the token could NOT be generated:

response.status_code

The token looks similar to:

A21AAJmqsBwihAFF236Y6pnisFJWK***hy3Qr6SsZNr0BsWPFIwEkXqu45bkJHlDgxkknDUkoSA

And it is the one we have to provide instead of the client and the secret when approving the order; the entire data structure is the one stipulated by PayPal.

15-03-2025 - Andrés Cruz

En español

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