Basic support for allowing users to change their votes in Queue/Vote actions

application/modules/requests/models/ApprovalActionQueueModel.php

@@ -78,9 +78,11 @@ class Requests_ApprovalActionQueueModel extends Requests_ApprovalActionModel
         $user = Auth_UserModel::findCurrentUser();
         $votes = Requests_ApproverVoteModel::findUsersVotesForRequsets($user, $requests);
         foreach ($requests as $request) {
-            if ($votes[$request->getId()]) {
+            if ($votes[$request->getId()] && $votes[$request->getId()]->getApprovalAction() == $this->getId()) {
                 $vote = $votes[$request->getId()];
+                if (!$this->getCanChangeVote()) {
                     continue;
+                }
             } else {
                 $vote = Requests_ApproverVoteModel::fetchNew();
             }
@@ -98,5 +100,10 @@ class Requests_ApprovalActionQueueModel extends Requests_ApprovalActionModel
     {
         // Do nothing in base class, useful for overriding in child classes
     }
+
+    public function getCanChangeVote()
+    {
+        return (bool) ($this->_data['canChangeVote'] == 'yes');
+    }
 }