Scaffold landing page for billing, controller & endpoint

app/Http/Controllers/ClientPortal/BillingSubscriptionPurchaseController.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * Invoice Ninja (https://invoiceninja.com).
+ *
+ * @link https://github.com/invoiceninja/invoiceninja source repository
+ *
+ * @copyright Copyright (c) 2021. Invoice Ninja LLC (https://invoiceninja.com)
+ *
+ * @license https://opensource.org/licenses/AAL
+ */
+
+namespace App\Http\Controllers\ClientPortal;
+
+use App\Http\Controllers\Controller;
+use App\Models\BillingSubscription;
+use Illuminate\Http\Request;
+
+class BillingSubscriptionPurchaseController extends Controller
+{
+    public function index(BillingSubscription $billing_subscription)
+    {
+        return $billing_subscription;
+    }
+}

app/Transformers/BillingSubscriptionTransformer.php

@@ -57,6 +57,7 @@ class BillingSubscriptionTransformer extends EntityTransformer
             'plan_map' => (string)$billing_subscription->plan_map,
             'refund_period' => (int)$billing_subscription->refund_period,
             'webhook_configuration' => (string)$billing_subscription->webhook_configuration,
+            'purchase_page' => (string)route('client.subscription.purchase', $billing_subscription->hashed_id),
             'is_deleted' => (bool)$billing_subscription->is_deleted,
             'created_at' => (int)$billing_subscription->created_at,
             'updated_at' => (int)$billing_subscription->updated_at,

routes/client.php

@@ -76,6 +76,8 @@ Route::group(['middleware' => ['auth:contact', 'locale', 'check_client_existence
     Route::get('logout', 'Auth\ContactLoginController@logout')->name('logout');
 });
 
+Route::get('client/subscription/{billing_subscription}/purchase', 'ClientPortal\BillingSubscriptionPurchaseController@index')->name('client.subscription.purchase');
+
 Route::group(['middleware' => ['invite_db'], 'prefix' => 'client', 'as' => 'client.'], function () {
     /*Invitation catches*/
     Route::get('recurring_invoice/{invitation_key}', 'ClientPortal\InvitationController@recurringRouter');