partial update transaction work with stock product

database/migrations/2025_06_24_155937_create_work_products_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateWorkProductsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('work_products', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('work_id')->constrained('works')->onDelete('cascade');
+            $table->foreignId('product_id')->constrained('products')->onDelete('cascade');
+            $table->decimal('quantity_required', 10, 2)->default(1);
+            $table->text('notes')->nullable();
+            $table->timestamps();
+            
+            // Prevent duplicate work-product combinations
+            $table->unique(['work_id', 'product_id']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('work_products');
+    }
+}

database/seeders/WorkProductSeeder.php

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+<?php
+
+namespace Database\Seeders;
+
+use App\Models\Work;
+use App\Models\Product;
+use App\Models\WorkProduct;
+use Illuminate\Database\Seeder;
+
+class WorkProductSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        // Get some sample works and products
+        $works = Work::take(3)->get();
+        $products = Product::where('active', true)->take(5)->get();
+
+        if ($works->isEmpty() || $products->isEmpty()) {
+            $this->command->info('Tidak ada data Work atau Product untuk seeding. Silakan buat data tersebut terlebih dahulu.');
+            return;
+        }
+
+        // Sample work-product relationships
+        $workProductData = [
+            [
+                'work_id' => $works->first()->id,
+                'product_id' => $products->first()->id,
+                'quantity_required' => 2.0,
+                'notes' => 'Digunakan untuk pembersihan awal'
+            ],
+            [
+                'work_id' => $works->first()->id,
+                'product_id' => $products->skip(1)->first()->id,
+                'quantity_required' => 1.0,
+                'notes' => 'Untuk finishing'
+            ],
+            [
+                'work_id' => $works->skip(1)->first()->id,
+                'product_id' => $products->skip(2)->first()->id,
+                'quantity_required' => 3.0,
+                'notes' => 'Komponen utama'
+            ],
+            [
+                'work_id' => $works->skip(1)->first()->id,
+                'product_id' => $products->skip(3)->first()->id,
+                'quantity_required' => 0.5,
+                'notes' => 'Pelumas tambahan'
+            ],
+            [
+                'work_id' => $works->skip(2)->first()->id,
+                'product_id' => $products->skip(4)->first()->id,
+                'quantity_required' => 1.0,
+                'notes' => 'Standard usage'
+            ]
+        ];
+
+        foreach ($workProductData as $data) {
+            WorkProduct::firstOrCreate(
+                [
+                    'work_id' => $data['work_id'],
+                    'product_id' => $data['product_id']
+                ],
+                [
+                    'quantity_required' => $data['quantity_required'],
+                    'notes' => $data['notes']
+                ]
+            );
+        }
+
+        $this->command->info('Work Product relationships seeded successfully!');
+    }
+}