PlatformOrder create: add jump to subscriptions link when require_subscription

resources/views/admin/platform_orders/form.blade.php

@@ -135,6 +135,29 @@
         </select>
         @if(! $canRenew)
             <small class="muted">提示：续费单必须绑定订阅。请从「订阅管理」列表/详情进入“续费下单”，系统会自动带入订阅ID。</small>
+
+            @php
+                $jumpQuery = [];
+                if ((int) ($defaults['merchant_id'] ?? 0) > 0) {
+                    $jumpQuery['merchant_id'] = (int) ($defaults['merchant_id'] ?? 0);
+                }
+                if ((int) ($defaults['plan_id'] ?? 0) > 0) {
+                    $jumpQuery['plan_id'] = (int) ($defaults['plan_id'] ?? 0);
+                }
+
+                $jumpBase = '/admin/site-subscriptions';
+                if (count($jumpQuery) > 0) {
+                    $jumpBase .= '?' . \Illuminate\Support\Arr::query($jumpQuery);
+                }
+
+                $jumpUrl = \App\Support\BackUrl::withBack($jumpBase, \App\Support\BackUrl::selfWithoutBack());
+            @endphp
+
+            @if(($requireSubscription ?? false) && $jumpUrl)
+                <div class="mt-6 actions">
+                    <a class="btn btn-secondary btn-sm" href="{!! $jumpUrl !!}">去订阅管理选择订阅</a>
+                </div>
+            @endif
         @endif
     </label>
 

tests/Feature/AdminPlatformOrderCreateRequireSubscriptionFlagShouldRenderJumpToSubscriptionsLinkTest.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Arr;
+use Tests\TestCase;
+
+class AdminPlatformOrderCreateRequireSubscriptionFlagShouldRenderJumpToSubscriptionsLinkTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_create_should_render_jump_to_subscriptions_link_when_require_subscription_flag_and_no_subscription_context(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $url = '/admin/platform-orders/create?' . Arr::query([
+            'require_subscription' => 1,
+            'merchant_id' => 2,
+            'plan_id' => 3,
+        ]);
+
+        $res = $this->get($url);
+        $res->assertOk();
+
+        $res->assertSee('去订阅管理选择订阅', false);
+        $res->assertSee('/admin/site-subscriptions?merchant_id=2&plan_id=3', false);
+
+        // 链接应携带 back
+        $res->assertSee('back=', false);
+    }
+}