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database/migrations/2025_11_13_060808_create_order_items_table.php

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+<?php
+
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateOrderItemsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('order_items', function (Blueprint $table) {
+            $table->bigIncrements('id');
+
+            // Link to orders table (parent order)
+            $table->foreignId('order_id')->constrained('orders')->onDelete('cascade');
+
+            // Sub-order / line item fields
+            $table->string('description')->nullable();
+            $table->integer('ctn')->nullable()->default(0);
+            $table->integer('qty')->nullable()->default(0);
+            $table->integer('ttl_qty')->nullable()->default(0);
+
+            $table->string('unit')->nullable();
+
+            // financials & measurements
+            $table->decimal('price', 14, 2)->nullable()->default(0.00);
+            $table->decimal('ttl_amount', 16, 2)->nullable()->default(0.00);
+
+            $table->decimal('cbm', 12, 3)->nullable()->default(0.000);
+            $table->decimal('ttl_cbm', 14, 3)->nullable()->default(0.000);
+
+            $table->decimal('kg', 12, 3)->nullable()->default(0.000);
+            $table->decimal('ttl_kg', 14, 3)->nullable()->default(0.000);
+
+            $table->string('shop_no')->nullable();
+
+            // optional extra data (json for extensibility)
+            $table->json('meta')->nullable();
+
+            $table->timestamps();
+
+            // Indexes for common queries
+            $table->index('order_id');
+            $table->index('ctn');
+            $table->index('qty');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('order_items');
+    }
+}