How to prevent stripe from creating new user when receiving a payment? - laravel

Question

I am starting with stripe and still in test mode.
I use Laravel 9 + cashier and vuejs
I also installed vue-stripe and created a view to test the checkout functionality.
Here is my vue
<template>
<div class="text-xl sass-editor-1 text-center">
<h1 class="text-2xl">Stripe Payment Gateway integration</h1>
<div class="container" v-if="payId">
<stripe-checkout
ref="checkoutRef"
:pk="publishableKey"
:sessionId="payId"
:customerEmail="customerEmail" />
<button class="border-2 rounded-lg bg-green-800 text-white p-3 mt-4" #click="submit">Pay Now!</button>
</div>
{{customerEmail}}
<div v-if="subscribeId" class="container">
<stripe-checkout
ref="subRef"
:pk="publishableKey"
:sessionId="subscribeId"
:customerEmail="customerEmail" />
<button class="border-2 rounded-lg bg-green-800 text-white p-3 mt-4" #click="submitSub">Subscribe Now!</button>
</div>
</div>
</template>
<script>
import { ref, onMounted } from 'vue';
import { StripeCheckout , Stripe} from '#vue-stripe/vue-stripe';
import axios from "../axios"
import store from "../store"
export default {
components: {
StripeCheckout,
},
data() {
return {
publishableKey: 'pk_test_51M6ZtzI....................XgAyUVjlwG6MFos0AaqaQYJOf2YC3a6oWlZqMjFtTZj00Tue51qVs',
payId: null,
subscribeId: null,
customerEmail: store.state.user.email
}
},
methods: {
getSession() {
axios.get('api/getSession')
.then(res => {
console.log(res);
this.payId = res.data.oneTime.id;
this.subscribeId = res.data.sub.id;
})
.catch(err => {
console.log(err);
})
},
submit() {
this.$refs.checkoutRef.redirectToCheckout();
},
submitSub() {
this.$refs.subRef.redirectToCheckout();
}
},
mounted() {
this.getSession();
}
}
</script>
and here is the StripeController to return the sessionId in the backend
<?php
namespace App\Http\Controllers;
use Stripe\StripeClient;
use Illuminate\Http\Request;
use Laravel\Cashier\Cashier;
class StripeController extends Controller
{
public function getSession()
{
$stripe = new StripeClient(env('STRIPE_SECRET'));
$user=auth()->user();
$stripeCustomer = $user->createOrGetStripeCustomer(
['name'=>$user->name,'email'=>$user->email]);
$checkout = $stripe->checkout->sessions->create(
[
'success_url' => 'https://yahoo.com',
'cancel_url' => 'https://google.com',
'line_items' =>
[
[
'price_data' =>
[
'currency' => 'eur',
'unit_amount' => 500,
'product_data' =>
[
'name' => 'Example Stripe Checkout'
],
],
'quantity' => 1,
],
],
'mode' => 'payment',
]
);
$sub = $stripe->checkout->sessions->create(
[
'success_url' => 'https://denentzat.fr',
'cancel_url' => 'https://google.com',
'line_items' =>
[
[
'price'=>'price_1M84UNIWDjpHNQK1FXOj1k01',
'quantity' => 1,
],
],
'mode' => 'subscription',
]
);
return ['oneTime'=>$checkout, 'sub'=>$sub];
}
public function webhook(Request $request){
\Log::info($request->data);
return response()->json(['status'=>'success']);
}
}
The payment is done in both cases (pay or subscribe).
Nevertheless, when I go in the customer tab of the dashboard, I can see that sometimes (I could not find for what reason) stripe create a guest user, or a normal user and
eventually, there may be several users with the same email. How to prevent this?
I was hoping that in passing the user email to the form (Stripe-checkout component) this will prefill the email field but it doesn't happen.
Thank you for help.

Answer 1

You can pre-create a Customer with their email, then passing in the Customer Id when creating the Checkout Session. (see Existing Customer on Stripe Doc).