Laravel mysql update balance after payment - mysql

Question

I have mysql tables:
Balance
id | client_id | balance
And
Payments**
id | payment_date | amount | foreign key -> balance_id
What methods are used to update balance when I store payment amount?

Answer 1

Inside your payments model, you can create an event handlers like so:
/**
* The event map for the model.
*
* #var array
*/
protected $dispatchesEvents = [
'created' => \App\Events\PaymentCreated::class,
];
Then you can create an event like so:
PaymentCreatedEvent
<?php
namespace App\Events;
use App\Models\Payments;
use Illuminate\Broadcasting\Channel;
use Illuminate\Queue\SerializesModels;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Broadcasting\InteractsWithSockets;
class PaymentCreatedEvent
{
use Dispatchable, InteractsWithSockets, SerializesModels;
public $payments;
/**
* Create a new event instance.
*/
public function __construct(Payments $payments)
{
$this->payments = $payments;
}
/**
* Get the channels the event should broadcast on.
*
* #return Channel|array
*/
public function broadcastOn()
{
return new PrivateChannel('channel-name');
}
}
Then you can create a listener to create the balance:
PaymentCreatedListener
<?php
namespace App\Listeners;
use Illuminate\Support\Facades\Mail;
use App\Events\PaymentCreatedEvent;
class PaymentCreatedListener
{
/**
* Create the event listener.
*/
public function __construct()
{
}
/**
* Handle the event.
*
* #param PaymentCreatedEvent $event
*/
public function handle(PaymentCreatedEvent $event)
{
// Insert in to the balance table here
}
}
Then inside your eventserviceprovider.php add
/**
* The event listener mappings for the application.
*
* #var array
*/
protected $listen = [
'App\Events\PaymentCreatedEvent' => [
'App\Listeners\PaymentCreatedListener',
],
];
To listen to your event. You will need to create the insert statement inside the listener... But you get the idea.

Answer 2

In payment issues i think you must handle transaction and check that all inserts/updates run successfully.
You can one of approaches:
1.
In your payment model:
static function boot() {
static::created(function($payment){
//update balance here
}
}
2.
In your controller or other class:
DB::beginTransaction();
try{
//insert payment row
//update balance
DB::commit();
}
catch (\Exception $e){
DB::rollback();
}