* [bug#66327,done,0.5h] create a milestone report when change the project model.

module/project/model.php

@@ -1529,6 +1529,11 @@ class projectModel extends model
         }
         if(empty($oldProject->multiple) and !in_array($oldProject->model, array('waterfall', 'waterfallplus'))) $this->loadModel('execution')->syncNoMultipleSprint($projectID); // 无迭代的非瀑布项目需要更新。
 
+        if($oldProject->model != $project->model && !in_array($oldProject->model, array('waterfall', 'waterfallplus', 'ipd')) && in_array($project->model, array('waterfall', 'waterfallplus', 'ipd')))
+        {
+            $this->projectTao->createMilestoneReport($projectID);
+        }
+
         if(dao::isError()) return false;
         return common::createChanges($oldProject, $project);
     }

module/project/tao.php

@@ -1180,6 +1180,9 @@ class projectTao extends projectModel
      */
     protected function createMilestoneReport(int $projectID): bool
     {
+        $reportID = $this->dao->select('id')->from(TABLE_DOC)->where('project')->eq($projectID)->andWhere('module')->eq('milestone')->andWhere('type')->eq('projectReport')->fetch('id');
+        if(!empty($reportID)) return true;
+
         $report = new stdclass();
         $report->title        = $this->lang->project->milestoneReport;
         $report->project      = $projectID;