Add <answer default_from="answer_name"> feature & load page 3

mentoring/answer.py

@@ -6,7 +6,7 @@
 import logging
 
 from xblock.core import XBlock
-from xblock.fields import Any, Boolean, Scope
+from xblock.fields import Any, Boolean, Scope, String
 from xblock.fragment import Fragment
 
 from .models import Answer
@@ -29,11 +29,18 @@ class AnswerBlock(XBlock):
     """
     student_input = Any(help="Last input submitted by the student", default="", scope=Scope.user_state)
     read_only = Boolean(help="Display as a read-only field", default=False, scope=Scope.content)
+    default_from = String(help="If specified, the name of the answer to get the default value from", default=None, scope=Scope.content)
 
     def __init__(self, *args, **kwargs):
         super(AnswerBlock, self).__init__(*args, **kwargs)
+
+        # Only attempt to locate a model object for this block when the answer has a name
         if self.name:
             self.student_input = self.get_model_object().student_input
+
+        # Default value can be set from another answer's current value
+        if not self.student_input and self.default_from:
+            self.student_input = self.get_model_object(name=self.default_from).student_input
     
     def student_view(self, context=None):  # pylint: disable=W0613
         """Returns default student view."""
@@ -69,8 +76,15 @@ class AnswerBlock(XBlock):
             answer_data.student_input = self.student_input
             answer_data.save()
 
-    def get_model_object(self):
-        if not self.name:
+    def get_model_object(self, name=None):
+        """
+        Fetches the Answer model object for the answer named `name`
+        """
+        # By default, get the model object for the current answer's name
+        if not name:
+            name = self.name
+        # Consistency check - we should have a name by now
+        if not name:
             raise ValueError, 'AnswerBlock.name field need to be set to a non-null/empty value'
 
         # TODO Use a random user id
@@ -78,6 +92,6 @@ class AnswerBlock(XBlock):
 
         answer_data, created = Answer.objects.get_or_create(
             student_id=student_id,
-            name=self.name
+            name=name
         )
         return answer_data

mentoring/mentoring.py

@@ -106,6 +106,10 @@ class MentoringBlock(XBlock):
         Sample scenarios which will be displayed in the workbench
         """
         return [
-            ("Mentoring: Pre-Goal Brainstom", load_resource('templates/001_pre_goal_brainstorm.xml')),
-            ("Mentoring: Getting Feedback", load_resource('templates/002_getting_feedback.xml')),
+            ("Mentoring - Page 1, Pre-goal brainstom",
+                                  load_resource('templates/001_pre_goal_brainstorm.xml')),
+            ("Mentoring - Page 2, Getting feedback",
+                                  load_resource('templates/002_getting_feedback.xml')),
+            ("Mentoring - Page 3, Reflecting on your feedback",
+                                  load_resource('templates/003_reflecting_on_feedback.xml')),
         ]

mentoring/models.py

@@ -7,6 +7,6 @@ class Answer(models.Model):
 
     name = models.CharField(max_length=20, db_index=True)
     student_id = models.CharField(max_length=20, db_index=True)
-    student_input = models.CharField(max_length=10000)
+    student_input = models.CharField(max_length=10000, blank=True, default='')
     created_on = models.DateTimeField('created on', auto_now_add=True)
     modified_on = models.DateTimeField('modified on', auto_now=True)

templates/003_reflecting_on_feedback.xml

@@ -5,6 +5,6 @@
             <p>Now that you have received feedback from others, would you like to revise your brainstorm list? Which goals are the most interesting to you now? Which goals are you most considering pursuing?</p>
         </html>
 
-        <answer name="brainstorm_goals2" default-from="brainstorm_goals" />
+        <answer name="brainstorm_goals2" default_from="brainstorm_goals" />
     </mentoring>
 </vertical>