PackageSkuObserver.php
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PackageSkuObserver.php
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	<?php

	namespace App\Observers;

	use App\PackageSku;

	class PackageSkuObserver
	{
	/**
	* Handle the "creating" event on an PackageSku relation.
	*
	* Ensures that the entries belong to the same tenant.
	*
	* @param \App\PackageSku $packageSku The package-sku relation
	*
	* @return void
	*/
	public function creating(PackageSku $packageSku)
	{
	$package = $packageSku->package;
	$sku = $packageSku->sku;

	if ($package->tenant_id != $sku->tenant_id) {
	throw new \Exception("Package and SKU owned by different tenants");
	}
	}

	/**
	* Handle the "created" event on an PackageSku relation
	*
	* @param \App\PackageSku $packageSku The package-sku relation
	*
	* @return void
	*/
	public function created(PackageSku $packageSku)
	{
	// TODO: free units...
	$package = $packageSku->package;
	$sku = $packageSku->sku;

	$package->skus()->updateExistingPivot(
	$sku,
	['cost' => ($sku->cost * (100 - $package->discount_rate)) / 100],
	false
	);
	}
	}