feat(purchase): menambahkan kolom user_id dan menyesuaikan relasinya

app/Models/PurchaseItem.php

@@ -2,6 +2,8 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Attributes\Scope;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -23,11 +25,22 @@ protected function casts(): array
         ];
     }
 
+    #[Scope]
+    public function currentUser(Builder $query): void
+    {
+        $query->where('user_id', auth()->id());
+    }
+
     public function purchase(): BelongsTo
     {
         return $this->belongsTo(Purchase::class);
     }
 
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
     public function purchasable(): MorphTo
     {
         return $this->morphTo();

app/Models/User.php

@@ -92,6 +92,11 @@ public function orderItems(): HasMany
         return $this->hasMany(OrderItem::class);
     }
 
+    public function purchaseItems(): HasMany
+    {
+        return $this->hasMany(PurchaseItem::class);
+    }
+
     public function payments(): HasMany
     {
         return $this->hasMany(Payment::class);

database/migrations/2025_10_03_080031_create_purchase_items_table.php

@@ -14,6 +14,7 @@ public function up(): void
         Schema::create('purchase_items', function (Blueprint $table) {
             $table->id();
             $table->foreignId('purchase_id')->nullable()->constrained()->cascadeOnDelete();
+            $table->foreignId('user_id')->constrained()->cascadeOnDelete();
             $table->morphs('purchasable');
             $table->unsignedInteger('quantity');
             $table->unsignedInteger('unit_price');