OTP SimplePay integration with Flask
Initialize the extension with Flask and Flask-SQLAlchemy instances.
from flask import Flask
from flask_simplepay import SimplePay
from flask_sqlalchemy import SQLAlchemy
app = Flask(__name__)
db = SQLAlchemy(app)
simple = SimplePay(app, db)
if __name__ == '__main__':
app.run()To start payment, a Transaction is needed. After adding the transaction and
commiting the session, the /simple/start/<int:transaction_id> endpoint starts
the payment procedure. When the payment process is finished, the /simple/back
endpoint is called. To define the behaviour upon the callback, extend the TransactionMixin
class and override the back() method. Return value should be anything a Flask
route method would return.
from flask import render_template
from flask_simplepay import TransactionMixin
class Transaction(db.Model, TransactionMixin):
id = db.Column(db.Integer, primary_key=True, autoincrement=True)
def back(self):
return render_template(self.result, transaction=self)The Transaction model class should be provided at initialization as
transaction_class argument.