fix(attributes): expose and apply default_value in the admin panel

packages/admin/resources/lang/ar/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'قواعد التحقق',
             'helper' => 'القواعد الخاصة بحقل السمة، مثال: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'القيمة الافتراضية',
+            'helper' => 'يُطبَّق كقيمة ابتدائية عند إنشاء سجل جديد بهذه السمة.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/bg/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Правила за валидация',
             'helper' => 'Правила за поле на атрибут, пример: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Стойност по подразбиране',
+            'helper' => 'Прилага се като начална стойност при създаване на нов запис с този атрибут.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/de/attribute.php

@@ -50,5 +50,9 @@
         'validation_rules' => [
             'label' => 'Validierungsregeln',
         ],
+        'default_value' => [
+            'label' => 'Standardwert',
+            'helper' => 'Wird als Anfangswert beim Erstellen eines neuen Eintrags mit diesem Attribut verwendet.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/en/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Validation Rules',
             'helper' => 'Rules for attribute field, example: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Default Value',
+            'helper' => 'Applied as the initial value when creating a new record with this attribute.',
+        ],
     ],
 ];

packages/admin/resources/lang/es/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Reglas de validación',
             'helper' => 'Reglas para el campo de atributo, ejemplo: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Valor predeterminado',
+            'helper' => 'Se aplica como valor inicial al crear un nuevo registro con este atributo.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/fa/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Validation Rules',
             'helper' => 'Rules for attribute field, example: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'مقدار پیش‌فرض',
+            'helper' => 'به عنوان مقدار اولیه هنگام ایجاد یک رکورد جدید با این ویژگی اعمال می‌شود.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/fr/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Règles de validation',
             'helper' => 'Règles pour le champ attribut, exemple : min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Valeur par défaut',
+            'helper' => 'Appliquée comme valeur initiale lors de la création d\'un nouvel enregistrement avec cet attribut.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/hr/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Pravila validacije',
             'helper' => 'Pravila za polje atributa, primjer: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Zadana vrijednost',
+            'helper' => 'Primjenjuje se kao početna vrijednost pri stvaranju novog zapisa s ovim atributom.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/hu/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Érvényesítési szabályok',
             'helper' => 'Szabályok az attribútum mezőhöz, pl.: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Alapértelmezett érték',
+            'helper' => 'Kezdeti értékként kerül alkalmazásra új rekord létrehozásakor ezzel az attribútummal.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/mn/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Баталгаажуулах дүрэм',
             'helper' => 'Атрибутын талбарын дүрэм, жишээ: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Өгөгдмөл утга',
+            'helper' => 'Энэ атрибуттай шинэ бичлэг үүсгэхэд анхны утга болгон хэрэглэгдэнэ.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/nl/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Validatieregels',
             'helper' => 'Regels voor attribuutveld, voorbeeld: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Standaardwaarde',
+            'helper' => 'Toegepast als beginwaarde bij het aanmaken van een nieuw record met dit attribuut.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/pl/attribute.php

@@ -50,5 +50,9 @@
         'validation_rules' => [
             'label' => 'Reguły walidacji',
         ],
+        'default_value' => [
+            'label' => 'Wartość domyślna',
+            'helper' => 'Stosowana jako wartość początkowa podczas tworzenia nowego rekordu z tym atrybutem.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/pt_BR/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Regras de validação',
             'helper' => 'Regras para o campo do atributo, exemplo: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Valor padrão',
+            'helper' => 'Aplicado como valor inicial ao criar um novo registro com este atributo.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/ro/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Reguli de validare',
             'helper' => 'Reguli pentru câmpul atribut, de ex.: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Valoare implicită',
+            'helper' => 'Aplicată ca valoare inițială la crearea unui nou înregistrări cu acest atribut.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/tr/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Doğrulama Kuralları',
             'helper' => 'Özellik alanı için kurallar, örnek: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Varsayılan değer',
+            'helper' => 'Bu özellikle yeni bir kayıt oluşturulurken başlangıç değeri olarak uygulanır.',
+        ],
     ],
-];
+];

packages/admin/resources/lang/vi/attribute.php

@@ -51,5 +51,9 @@
             'label' => 'Quy tắc xác thực',
             'helper' => 'Quy tắc cho trường thuộc tính, ví dụ: min:1|max:10|...',
         ],
+        'default_value' => [
+            'label' => 'Giá trị mặc định',
+            'helper' => 'Được áp dụng làm giá trị ban đầu khi tạo bản ghi mới với thuộc tính này.',
+        ],
     ],
-];
+];

packages/admin/src/Filament/Resources/AttributeGroupResource/RelationManagers/AttributesRelationManager.php

@@ -123,6 +123,14 @@ class_basename($fieldType)
                     ->helperText(
                         __('lunarpanel::attribute.form.validation_rules.helper')
                     ),
+                TextInput::make('default_value')->label(
+                    __('lunarpanel::attribute.form.default_value.label')
+                )
+                    ->string()
+                    ->nullable()
+                    ->helperText(
+                        __('lunarpanel::attribute.form.default_value.helper')
+                    ),
                 Grid::make(1)
                     ->schema(function (Get $get) {
                         return AttributeData::getConfigurationFields($get('type'));

packages/admin/src/Support/Forms/AttributeData.php

@@ -59,7 +59,11 @@ public function getFilamentComponent(Attribute $attribute): Component
                 $value = $this->unwrapFieldValue($state);
 
                 if ($value === null) {
-                    $value = $this->unwrapFieldValue((new $attribute->type)->getValue());
+                    if (filled($attribute->default_value)) {
+                        $value = $attribute->default_value;
+                    } else {
+                        $value = $this->unwrapFieldValue((new $attribute->type)->getValue());
+                    }
                 }
 
                 if ($attribute->type === TranslatedTextFieldType::class) {

tests/admin/Feature/Filament/Resources/AttributeGroupResource/RelationManagers/AttributesRelationManagerTest.php

@@ -172,6 +172,63 @@
     ])->assertHasNoTableActionErrors();
 });
 
+it('can create an attribute with a default value', function () {
+    $lang = Language::factory()->create([
+        'default' => true,
+        'code' => 'en',
+    ]);
+
+    $this->asStaff();
+
+    $attributeGroup = AttributeGroup::factory()->create();
+
+    Livewire::test(AttributesRelationManager::class, [
+        'ownerRecord' => $attributeGroup,
+        'pageClass' => EditAttributeGroup::class,
+    ])->callTableAction(CreateAction::class, data: [
+        'name.'.$lang->code => 'Price',
+        'type' => Number::class,
+        'handle' => 'price',
+        'default_value' => '99',
+        'configuration' => [],
+    ])->assertHasNoTableActionErrors();
+
+    $this->assertDatabaseHas((new Attribute)->getTable(), [
+        'attribute_group_id' => $attributeGroup->id,
+        'handle' => 'price',
+        'default_value' => '99',
+    ]);
+});
+
+it('can edit an attribute default value', function () {
+    Language::factory()->create([
+        'default' => true,
+        'code' => 'en',
+    ]);
+
+    $this->asStaff();
+
+    $attributeGroup = AttributeGroup::factory()->create();
+
+    $attribute = Attribute::factory()->create([
+        'attribute_group_id' => $attributeGroup->id,
+        'type' => Number::class,
+        'default_value' => null,
+    ]);
+
+    Livewire::test(AttributesRelationManager::class, [
+        'ownerRecord' => $attributeGroup,
+        'pageClass' => EditAttributeGroup::class,
+    ])->callTableAction(EditAction::class, $attribute, data: [
+        'default_value' => '42',
+    ])->assertHasNoTableActionErrors();
+
+    $this->assertDatabaseHas((new Attribute)->getTable(), [
+        'id' => $attribute->id,
+        'default_value' => '42',
+    ]);
+});
+
 it('hydrates dropdown lookups when editing attributes', function () {
     Language::factory()->create([
         'default' => true,

tests/admin/Feature/Filament/Resources/ProductResource/Pages/EditProductTest.php

@@ -421,3 +421,51 @@ function createTranslatedRichTextProductAttribute(Product $product, string $hand
         ->assertDontSee(__('lunarpanel::product.status.availability.hidden_from_guests'))
         ->assertDontSee(__('lunarpanel::product.status.availability.no_default_customer_group'));
 });
+
+it('applies attribute default_value when product has no value for that attribute', function () {
+    Language::factory()->create(['default' => true]);
+
+    TaxClass::factory()->create(['default' => true]);
+
+    $product = Product::factory()->create();
+    ProductVariant::factory()->create(['product_id' => $product->id]);
+
+    $group = AttributeGroup::factory()->create([
+        'attributable_type' => 'product',
+        'name' => ['en' => 'Details'],
+        'handle' => 'details',
+        'position' => 1,
+    ]);
+
+    $attribute = Attribute::factory()->create([
+        'attribute_type' => 'product',
+        'attribute_group_id' => $group->id,
+        'position' => 1,
+        'name' => ['en' => 'Quantity'],
+        'handle' => 'quantity',
+        'type' => Number::class,
+        'default_value' => '99',
+        'required' => false,
+        'system' => false,
+        'searchable' => false,
+    ]);
+
+    DB::table('lunar_attributables')->insert([
+        'attribute_id' => $attribute->id,
+        'attributable_type' => 'product_type',
+        'attributable_id' => $product->productType->id,
+    ]);
+
+    // The product has no value for 'quantity' yet
+    expect($product->attr('quantity'))->toBeNull();
+
+    $this->asStaff(admin: true);
+
+    // Saving without explicitly setting quantity should persist the default value
+    Livewire::test(EditProduct::class, [
+        'record' => $product->getRouteKey(),
+        'pageClass' => 'productEdit',
+    ])->call('save')->assertHasNoFormErrors();
+
+    expect($product->refresh()->attr('quantity'))->toBe(99);
+});