public function processRequest()
 {
     $request = $this->getRequest();
     $user = $request->getUser();
     $comments = $request->getStr('comments');
     $task = id(new ManiphestTask())->load($this->id);
     if (!$task) {
         return new Aphront404Response();
     }
     $draft = id(new PhabricatorDraft())->loadOneWhere('authorPHID = %s AND draftKey = %s', $user->getPHID(), $task->getPHID());
     if (!$draft) {
         $draft = new PhabricatorDraft();
         $draft->setAuthorPHID($user->getPHID());
         $draft->setDraftKey($task->getPHID());
     }
     $draft->setDraft($comments);
     $draft->save();
     $phids = array($user->getPHID());
     $action = $request->getStr('action');
     $transaction = new ManiphestTransaction();
     $transaction->setAuthorPHID($user->getPHID());
     $transaction->setComments($comments);
     $transaction->setTransactionType($action);
     $value = $request->getStr('value');
     switch ($action) {
         case ManiphestTransactionType::TYPE_OWNER:
             if (!$value) {
                 $value = $user->getPHID();
             }
             $phids[] = $value;
             break;
         case ManiphestTransactionType::TYPE_PRIORITY:
             $transaction->setOldValue($task->getPriority());
             break;
     }
     $transaction->setNewValue($value);
     $handles = id(new PhabricatorObjectHandleData($phids))->loadHandles();
     $transactions = array();
     $transactions[] = $transaction;
     $engine = PhabricatorMarkupEngine::newManiphestMarkupEngine();
     $transaction_view = new ManiphestTransactionListView();
     $transaction_view->setTransactions($transactions);
     $transaction_view->setHandles($handles);
     $transaction_view->setUser($user);
     $transaction_view->setMarkupEngine($engine);
     $transaction_view->setPreview(true);
     return id(new AphrontAjaxResponse())->setContent($transaction_view->render());
 }
 public function processRequest()
 {
     $request = $this->getRequest();
     $user = $request->getUser();
     $comments = $request->getStr('comments');
     $task = id(new ManiphestTask())->load($this->id);
     if (!$task) {
         return new Aphront404Response();
     }
     $draft = id(new PhabricatorDraft())->loadOneWhere('authorPHID = %s AND draftKey = %s', $user->getPHID(), $task->getPHID());
     if (!$draft) {
         $draft = new PhabricatorDraft();
         $draft->setAuthorPHID($user->getPHID());
         $draft->setDraftKey($task->getPHID());
     }
     $draft->setDraft($comments);
     $draft->save();
     $action = $request->getStr('action');
     $transaction = new ManiphestTransaction();
     $transaction->setAuthorPHID($user->getPHID());
     $transaction->setComments($comments);
     $transaction->setTransactionType($action);
     $value = $request->getStr('value');
     // grab phids for handles and set transaction values based on action and
     // value (empty or control-specific format) coming in from the wire
     switch ($action) {
         case ManiphestTransactionType::TYPE_PRIORITY:
             $transaction->setOldValue($task->getPriority());
             $transaction->setNewValue($value);
             break;
         case ManiphestTransactionType::TYPE_OWNER:
             if ($value) {
                 $value = current(json_decode($value));
                 $phids = array($value);
             } else {
                 $phids = array();
             }
             $transaction->setNewValue($value);
             break;
         case ManiphestTransactionType::TYPE_CCS:
             if ($value) {
                 $value = json_decode($value);
                 $phids = $value;
                 foreach ($task->getCCPHIDs() as $cc_phid) {
                     $phids[] = $cc_phid;
                     $value[] = $cc_phid;
                 }
                 $transaction->setNewValue($value);
             } else {
                 $phids = array();
                 $transaction->setNewValue(array());
             }
             $transaction->setOldValue($task->getCCPHIDs());
             break;
         case ManiphestTransactionType::TYPE_PROJECTS:
             if ($value) {
                 $value = json_decode($value);
                 $phids = $value;
                 foreach ($task->getProjectPHIDs() as $project_phid) {
                     $phids[] = $project_phid;
                     $value[] = $project_phid;
                 }
                 $transaction->setNewValue($value);
             } else {
                 $phids = array();
                 $transaction->setNewValue(array());
             }
             $transaction->setOldValue($task->getProjectPHIDs());
             break;
         default:
             $phids = array();
             $transaction->setNewValue($value);
             break;
     }
     $phids[] = $user->getPHID();
     $handles = id(new PhabricatorObjectHandleData($phids))->loadHandles();
     $transactions = array();
     $transactions[] = $transaction;
     $engine = new PhabricatorMarkupEngine();
     $engine->addObject($transaction, ManiphestTransaction::MARKUP_FIELD_BODY);
     $engine->process();
     $transaction_view = new ManiphestTransactionListView();
     $transaction_view->setTransactions($transactions);
     $transaction_view->setHandles($handles);
     $transaction_view->setUser($user);
     $transaction_view->setMarkupEngine($engine);
     $transaction_view->setPreview(true);
     return id(new AphrontAjaxResponse())->setContent($transaction_view->render());
 }