partial update transaction work with stock product

app/Models/Product.php

@@ -47,4 +47,26 @@ class Product extends Model
     {
         return $this->stocks()->where('dealer_id', $dealerId)->first()?->quantity ?? 0;
     }
+
+    /**
+     * Get all works that require this product
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
+     */
+    public function works()
+    {
+        return $this->belongsToMany(Work::class, 'work_products')
+                    ->withPivot('quantity_required', 'notes')
+                    ->withTimestamps();
+    }
+
+    /**
+     * Get work products pivot records
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     */
+    public function workProducts()
+    {
+        return $this->hasMany(WorkProduct::class);
+    }
 }