Initializing paystack transaction from your backend is safer way of building a secured payment integration.
For this content, I will be using postman for my testing. If you are new to postman, check my post on how to setup postman with laravel backend.
Create a Route
Create a route on api.php file with any preferred name.
Route::post('initialize_paystack', [PaystackController::class, 'initialize_paystack'])->name('api.initialize_paystack');
Create a Controller
For this solution, I have a controller called PaystackController and a function inside the controller called initialize_paystack.
To initialize payment, see the code below.
private $initialize_url = "https://api.paystack.co/transaction/initialize";
public function initialize_paystack(Request $request)
{
// $amount = number_format($request->amount,2);
$fields = [
'email' => $request->user()->email,
'amount' => $request->amount * 100,
];
$fields_string = http_build_query($fields);
//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL, $this->initialize_url);
curl_setopt($ch,CURLOPT_POST, true);
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
"Authorization: Bearer ".env('PAYSTACK_SECRET_KEY'),
"Cache-Control: no-cache",
));
//So that curl_exec returns the contents of the cURL; rather than echoing it
curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);
//execute post
$result = curl_exec($ch);
$response = json_decode($result);
return json_encode([
'data' => $response,
'metadata' => [
'payment_for' => 'token'
]
]);
}
Send data from postman
To trigger the initialization, I will send the amount from postman which can also be sent from your frontend.
Your response will return payment link, which you can use to make a payment or return back to the frontend.
"data": {
"status": true,
"message": "Authorization URL created",
"data": {
"authorization_url": "https://checkout.paystack.com/zbm34791mm5t9wk",
"access_code": "zbm34791mm5t9wk",
"reference": "dod8hghbhc"
}
},
The image above is response gotten after clicking the payment link.
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