Add comments to migrations,

Work on CartItem schema,

src/Database/migrations/2018_12_23_120000_create_shoppingcart_table.php

@@ -13,12 +13,20 @@ class CreateShoppingcartTable extends Migration
     public function up()
     {
         Schema::create(Config::get('cart.database.tables.cart'), function (Blueprint $table) {
-            $table->string('identifier');
+            /* Primary identifier of the cart, i.e. uinque user id */
-            $table->string('instance');
+            $table->string('identifier')->index();
-            $table->longText('content');
-            $table->nullableTimestamps();
 
+            /* Instance of the cart to allow for multiple carts per identifier */
+            $table->string('instance')->index();
+
+            /* Make primary key a combination of booth */
             $table->primary(['identifier', 'instance']);
+
+            /* Content of the cart */
+            $table->longText('content');
+
+            /* Allow empty timestamps */
+            $table->nullableTimestamps();
         });
     }
 

src/Database/migrations/2022_02_06_194000_create_shoppingcart_items_table.php

@@ -2,6 +2,7 @@
 
 use Illuminate\Database\Migrations\Migration;
 use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Config;
 use Illuminate\Support\Facades\Schema;
 
 class CreateShoppingcartItemsTable extends Migration
@@ -12,6 +13,25 @@ class CreateShoppingcartItemsTable extends Migration
     public function up()
     {
         Schema::create(Config::get('cart.database.tables.cart_item'), function (Blueprint $table) {
+            /* RowID of the CartItem, based on id and options */
+            $table->string('row_id', 32)->index();
+
+            /* Relation CartItem to Cart */
+            $table->unsignedBigInteger('cart_id');
+            $table->foreign('cart_id')->references('id')->on(Config::get('cart.database.tables.cart'));
+
+            /* Make id and rowid primary so there can not be duplicates */
+            $table->primary(['cart_id', 'row_id']);
+
+            /* The price of the CartItem */
+            $table->unsignedBigInteger('price')->nullable();
+            $table->unsignedFloat('discount_rate')->nullable();
+            $table->unsignedBigInteger('discount_fixed')->nullable();
+            $table->unsignedFloat('taxRate')->nullable();
+
+            /* Custom-Options of the CartItem */
+            $table->json('options');
+
             $table->timestamps();
         });
     }