Datetime field to demonstrate StudioEditableXBlockMixin datetime field supprot

problem_builder/mrq.py

@@ -21,8 +21,9 @@
 # Imports ###########################################################
 
 import logging
+import datetime as datetime
 
-from xblock.fields import List, Scope, Boolean
+from xblock.fields import List, Scope, Boolean, DateTime
 from xblock.validation import ValidationMessage
 from .questionnaire import QuestionnaireAbstractBlock
 from xblockutils.resources import ResourceLoader
@@ -69,9 +70,16 @@ class MRQBlock(QuestionnaireAbstractBlock):
         default=[],
     )
     hide_results = Boolean(display_name="Hide results", scope=Scope.content, default=False)
+
+    datetime = DateTime(
+        display_name="DateTime",
+        help="This field does not do anything - just renders in template",
+        default=datetime.datetime(2015, 01, 01)
+    )
+
     editable_fields = (
         'question', 'required_choices', 'ignored_choices', 'message', 'display_name',
-        'show_title', 'weight', 'hide_results',
+        'show_title', 'weight', 'hide_results', 'datetime'
     )
 
     def describe_choice_correctness(self, choice_value):

problem_builder/templates/html/mrqblock.html

+{% load tz %}
 <fieldset class="choices questionnaire" data-hide_results="{{self.hide_results}}">
+  <!--  Avoid django timezone conversion to not confuse reviewers -->
+  {% localtime off %}
+    <p>{{ self.datetime|date }}</p>
+  {% endlocaltime %}
   <legend class="question">
 	  {% if not hide_header %}<h3 class="question-title">{{ self.display_name_with_default }}</h3>{% endif %}
     <p>{{ self.question|safe }}</p>