Laravel Cashier (Stripe) get subscription cost or coupon used? - laravel-5

Question

I'm using Laravel Cashier with Stripe.
In my account panel I want to show users how much their monthly subscription is costing them.
Users can have a normal plan without a coupon or the same plan with a coupon that makes it half price.
Is there anyway Cashier can tell me how much the monthly subscription is costing them or if they signed up using a coupon? Or is this something I have to store in my own database at the time they subscribe?

Answer 1

I created a coupon trait that I use on my User Model. Hope that helps.
<?php
namespace App\Traits;
use Carbon\Carbon;
trait Coupon
{
public function getSubscriptions()
{
return $this->asStripeCustomer()->subscriptions->data;
}
public function getSubscription()
{
foreach ($this->getSubscriptions() as $subscription) {
if ($subscription->status === 'active') {
return $subscription;
}
}
}
public function discount()
{
return $this->getSubscription()->discount;
}
public function discountCustomerId()
{
return $this->discount()->customer;
}
public function discountSubscriptionId()
{
return $this->discount()->subscription;
}
public function discountStartDate()
{
return Carbon::createFromTimestamp($this->discount()->start);
}
public function discountEndDate()
{
return Carbon::createFromTimestamp($this->discount()->end);
}
public function discountDaysLeft()
{
return $this->discountEndDate()
->diffInDays($this->discountStartDate());
}
public function coupon()
{
return $this->discount()->coupon;
}
public function couponIsValid()
{
return $this->coupon()->valid;
}
}