[0.2] Allow extending of validation rules

docs/src/extending/validations.md

@@ -0,0 +1,31 @@
+# Validations
+
+[[toc]]
+
+## Overview
+
+If you want to add additional validation rules, you can do so by registering in service provider.
+
+## Extending Validation Rules
+
+```php
+use Lunar\Hub\Http\Livewire\Components\Products\ProductCreate;
+use Lunar\Models\Product;
+
+public function boot() {
+    ProductCreate::extendValidation([
+        'variant.sku' => ['required', 'min:8'],
+        'collections' => ['required', 'array', function (Product $product) {
+            return function ($attribute, $value, $fail) use (Product $product) {
+                // closure validation
+                $fail($product->translateAttribute('name') . " validation failed");
+            };
+        }],
+    ]);
+}
+```
+
+| Type    | Page                                                                                                                         | Closure parameters               |
+| ------- | ---------------------------------------------------------------------------------------------------------------------------- | -------------------------------- |
+| Product | `\Lunar\Hub\Http\Livewire\Components\Products\ProductCreate`<br />`\Lunar\Hub\Http\Livewire\Components\Products\ProductShow` | `\Lunar\Models\Product $product` |
+

packages/admin/src/Http/Livewire/Components/Products/AbstractProduct.php

@@ -8,6 +8,7 @@
 use Illuminate\Validation\Validator;
 use Livewire\Component;
 use Livewire\WithFileUploads;
+use Lunar\Hub\Http\Livewire\Traits\CanExtendValidation;
 use Lunar\Hub\Http\Livewire\Traits\HasAvailability;
 use Lunar\Hub\Http\Livewire\Traits\HasDimensions;
 use Lunar\Hub\Http\Livewire\Traits\HasImages;
@@ -43,6 +44,7 @@ abstract class AbstractProduct extends Component
     use HasUrls;
     use HasTags;
     use HasSlots;
+    use CanExtendValidation;
 
     /**
      * The current product we are editing.
@@ -204,7 +206,8 @@ protected function getValidationMessages()
         return array_merge(
             [],
             $this->hasPriceValidationMessages(),
-            $this->withAttributesValidationMessages()
+            $this->withAttributesValidationMessages(),
+            $this->getExtendedValidationMessages(),
         );
     }
 
@@ -276,7 +279,10 @@ protected function rules()
             $baseRules,
             $this->hasImagesValidationRules(),
             $this->hasUrlsValidationRules(! $this->product->id),
-            $this->withAttributesValidationRules()
+            $this->withAttributesValidationRules(),
+            $this->getExtendedValidationRules([
+                'product' => $this->product,
+            ]),
         );
     }
 
@@ -368,7 +374,6 @@ public function save()
         })->validate(null, $this->getValidationMessages());
 
         $this->validateUrls();
-
         $isNew = ! $this->product->id;
 
         DB::transaction(function () use ($isNew) {

packages/admin/src/Http/Livewire/Traits/CanExtendValidation.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Lunar\Hub\Http\Livewire\Traits;
+
+use Closure;
+
+trait CanExtendValidation
+{
+    public static array $extendedValidationRules = [];
+
+    public static array $extendedValidationMessages = [];
+
+    /**
+     * Extend validation rules
+     *
+     * @return void
+     */
+    public static function extendValidation(array $rules, array $messages = []): void
+    {
+        self::$extendedValidationRules = $rules;
+        self::$extendedValidationMessages = $messages;
+    }
+
+    /**
+     * Get extended validation rules
+     *
+     * @return array
+     */
+    protected function getExtendedValidationRules($parameters): array
+    {
+        return collect(self::$extendedValidationRules)
+            ->map(function ($rules) use ($parameters) {
+                if (is_array($rules) || $rules instanceof Closure) {
+                    if ($rules instanceof Closure) {
+                        $rules = [$rules];
+                    }
+
+                    return collect($rules)->map(function ($rule) use ($parameters) {
+                        if ($rule instanceof Closure) {
+                            return app()->call($rule, $parameters);
+                        }
+
+                        return $rule;
+                    })->toArray();
+                }
+
+                return $rules;
+            })->toArray();
+    }
+
+    /**
+     * Get extended validation messages
+     *
+     * @return array
+     */
+    protected function getExtendedValidationMessages(): array
+    {
+        return self::$extendedValidationMessages;
+    }
+}