feat: Payment 订单商品化——多态 payable 关联购买实体

- payments 表新增 payable_type/payable_id（nullableMorphs），订单可关联文章/套餐等可购买实体
- createOrder 接收 $payable 模型，取代 description 字符串解析
- membership 支付回调按 payable instanceof 分发（激活订阅 / 解锁单篇）
- Post/MembershipPlan 提供 payableLabel/payableUrl 约定方法；Payment 用约定方法生成展示标签与后台链接（皮肤等新实体可直接接入）
- 订单表格新增「类型」徽章（文章/会员套餐），商品列链接到对应后台编辑页；无 payable 的旧订单显示 —

plugins/neatstudio.membership/src/Http/MembershipController.php

@@ -43,8 +43,8 @@ class MembershipController
             $user,
             '会员套餐：'.$plan->name,
             $plan->price,
-            $channel,
-            'MembershipPlan#'.$plan->id
+            $plan,
+            $channel
         );
 
         return redirect()->route('pay.checkout', $payment);
@@ -77,8 +77,8 @@ class MembershipController
             $user,
             '解锁文章：'.$post->title,
             $price,
-            $channel,
-            'PostUnlock#'.$post->id
+            $post,
+            $channel
         );
 
         return redirect()->route('pay.checkout', $payment);

plugins/neatstudio.membership/src/Models/MembershipPlan.php

@@ -23,4 +23,17 @@ class MembershipPlan extends Model
     {
         return $this->hasMany(Subscription::class);
     }
+
+    /**
+     * 作为可购买实体的展示约定。
+     */
+    public function payableLabel(): string
+    {
+        return '会员套餐：'.$this->name;
+    }
+
+    public function payableUrl(): ?string
+    {
+        return route('filament.admin.resources.membership-plans.edit', $this);
+    }
 }

plugins/neatstudio.membership/src/ServiceProvider.php

@@ -7,6 +7,7 @@ namespace Plugins\Neatstudio\Membership;
 
 use App\Blog\Support\PluginManager;
 use App\Blog\Support\PluginServiceProvider;
+use App\Models\Post;
 use Filament\Forms\Components\TextInput;
 use Filament\Forms\Components\Toggle;
 use Filament\Schemas\Components\Section;
@@ -14,7 +15,6 @@ use Filament\Schemas\Schema;
 use Filament\Tables\Columns\IconColumn;
 use Filament\Tables\Columns\TextColumn;
 use Filament\Tables\Table;
-use Illuminate\Support\Str;
 use Plugins\Neatstudio\Membership\Models\MembershipPlan;
 use Plugins\Neatstudio\Membership\Models\Subscription;
 use Plugins\Neatstudio\Payment\Models\Payment;
@@ -25,41 +25,31 @@ class ServiceProvider extends PluginServiceProvider
     {
         $this->loadRoutes(__DIR__.'/../routes/web.php');
 
-        // 支付成功：激活会员订阅 / 解锁单篇付费文章
+        // 支付成功：按购买实体分发（激活会员订阅 / 解锁单篇付费文章）
         $manager->addAction('payment.paid', function (Payment $payment) {
-            $description = (string) $payment->description;
             $user = $payment->user;
+            $payable = $payment->payable;
 
-            if (! $user) {
+            if (! $user || ! $payable) {
                 return;
             }
 
-            if (str_starts_with($description, 'MembershipPlan#')) {
-                $planId = (int) substr($description, strlen('MembershipPlan#'));
-                $plan = MembershipPlan::find($planId);
-
-                if ($plan) {
-                    $now = now();
-                    Subscription::create([
-                        'user_id' => $user->id,
-                        'membership_plan_id' => $plan->id,
-                        'status' => 'active',
-                        'starts_at' => $now,
-                        'ends_at' => $now->copy()->addDays($plan->duration_days),
-                    ]);
-                }
+            if ($payable instanceof MembershipPlan) {
+                $now = now();
+                Subscription::create([
+                    'user_id' => $user->id,
+                    'membership_plan_id' => $payable->id,
+                    'status' => 'active',
+                    'starts_at' => $now,
+                    'ends_at' => $now->copy()->addDays($payable->duration_days),
+                ]);
             }
 
-            if (str_starts_with($description, 'PostUnlock#')) {
-                $postId = (int) substr($description, strlen('PostUnlock#'));
-                $post = \App\Models\Post::find($postId);
-
-                if ($post) {
-                    $meta = $post->meta ?? [];
-                    $unlocked = $meta['unlocked_user_ids'] ?? [];
-                    $unlocked[] = $user->id;
-                    $post->update(['meta' => array_merge($meta, ['unlocked_user_ids' => array_values(array_unique($unlocked))])]);
-                }
+            if ($payable instanceof Post) {
+                $meta = $payable->meta ?? [];
+                $unlocked = $meta['unlocked_user_ids'] ?? [];
+                $unlocked[] = $user->id;
+                $payable->update(['meta' => array_merge($meta, ['unlocked_user_ids' => array_values(array_unique($unlocked))])]);
             }
         }, 10);