refactor: update model casts to use method syntax across multiple models.

app/Models/DelayedGood.php

@@ -16,7 +16,9 @@ class DelayedGood extends Model
 
     protected $guarded = ['id'];
 
-    protected $casts = [
+    protected function casts(): array
+    {
+        return [
             'stored_date' => 'date',
             'payment_date' => 'date',
             'quantity' => 'integer',
@@ -25,6 +27,7 @@ class DelayedGood extends Model
             'paid_amount' => 'integer',
             'is_paid' => 'boolean',
         ];
+    }
 
     public function customer(): BelongsTo
     {

app/Models/EggPrice.php

@@ -13,9 +13,12 @@ class EggPrice extends Model
 
     protected $guarded = ['id'];
 
-    protected $casts = [
+    protected function casts(): array
+    {
+        return [
             'price' => 'integer',
         ];
+    }
 
     public function unit(): BelongsTo
     {

app/Models/Expense.php

@@ -14,7 +14,10 @@ class Expense extends Model implements HasMedia
 
     protected $guarded = ['id'];
 
-    protected $casts = [
+    protected function casts(): array
+    {
+        return [
             'expense_date' => 'date',
         ];
     }
+}

app/Models/FeedPurchase.php

@@ -16,10 +16,13 @@ class FeedPurchase extends Model
 
     protected $guarded = ['id'];
 
-    protected $casts = [
+    protected function casts(): array
+    {
+        return [
             'purchase_date' => 'date',
             'total_price' => 'integer',
         ];
+    }
 
     public function items(): HasMany
     {

app/Models/FeedPurchaseItem.php

@@ -13,11 +13,14 @@ class FeedPurchaseItem extends Model
 
     protected $guarded = ['id'];
 
-    protected $casts = [
+    protected function casts(): array
+    {
+        return [
             'quantity' => 'integer',
             'unit_price' => 'integer',
             'subtotal' => 'integer',
         ];
+    }
 
     protected function formattedUnitPrice(): Attribute
     {

app/Models/Order.php

@@ -13,13 +13,16 @@ class Order extends Model
 
     protected $guarded = ['id'];
 
-    protected $casts = [
+    protected function casts(): array
+    {
+        return [
             'order_date' => 'date',
             'egg_quantity' => 'integer',
             'unit_price' => 'integer',
             'total_amount' => 'integer',
             'discount' => 'integer',
         ];
+    }
 
     public function customer(): BelongsTo
     {