Fix silent crasher when reordering table rows

todo/templates/todo/list_detail.html

@@ -25,7 +25,7 @@
     <form action="" name="show_tasks" method="post">
         {% csrf_token %}
         <table class="table" id="tasktable">
-          <tr>
+          <tr class="nodrop">
             <th>Done</th>
             <th>Task</th>
             <th>Created</th>
@@ -93,8 +93,8 @@
   <script type="text/javascript">
     function order_tasks(data) {
       // The JQuery plugin tableDnD provides a serialize() function which provides the re-ordered
-      // data in a list. We pass that list as an object called "data" to a Django view
-      // to save the re-ordered data into the database.
+      // data in a list. We pass that list as an object ("data") to a Django view
+      // to save new priorities on each task in the list.
       $.post("{% url 'todo:reorder_tasks' %}", data, "json");
       return false;
     };

todo/views.py

@@ -260,10 +260,10 @@ def reorder_tasks(request) -> HttpResponse:
 
         # Re-prioritize each task in list
         i = 1
-        for t in newtasklist:
-            newtask = Task.objects.get(pk=t)
-            newtask.priority = i
-            newtask.save()
+        for id in newtasklist:
+            task = Task.objects.get(pk=id)
+            task.priority = i
+            task.save()
             i += 1
 
     # All views must return an httpresponse of some kind ... without this we get