perf: 优化子任务的可见性

app/Observers/ProjectTaskObserver.php

@@ -121,5 +121,6 @@ class ProjectTaskObserver
                 Deleted::forget('projectTask', $projectTask->id, $forgetUserids);
                 break;
         }
+        ProjectTask::whereParentId($projectTask->id)->change(['visibility' => $projectTask->visibility]);
     }
 }

database/migrations/2024_12_21_221807_update_project_tasks_subtask_visibility.php

@@ -0,0 +1,37 @@
+<?php
+
+use Carbon\Carbon;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+class UpdateProjectTasksSubtaskVisibility extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $prefix = DB::getTablePrefix();
+        $now = Carbon::now();
+        DB::statement("
+            UPDATE {$prefix}project_tasks AS subtask
+            INNER JOIN {$prefix}project_tasks AS parent ON subtask.parent_id = parent.id
+            SET
+                subtask.visibility = parent.visibility,
+                subtask.updated_at = '{$now}'
+            WHERE subtask.parent_id > 0
+        ");
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        // No need for down operation as this is a data correction
+    }
+}