Switch answer formatting to Django templates, Add special chars handling

mentoring/answer.py

@@ -10,7 +10,7 @@ from xblock.fields import Any, Boolean, Scope, String
 from xblock.fragment import Fragment
 
 from .models import Answer
-from .utils import load_resource
+from .utils import load_resource, render_template
 
 
 # Globals ###########################################################
@@ -47,14 +47,15 @@ class AnswerBlock(XBlock):
         return Fragment(u"<p>I can only appear inside mentoring blocks.</p>")
 
     def mentoring_view(self, context=None):
-        # TODO: Switch to Django templates & security
-        # TODO: Keep new lines
         if not self.read_only:
-            html = u'<textarea cols="100" rows="10" maxlength="{}" name="input">{}</textarea>'.format(
-                    Answer._meta.get_field('student_input').max_length,
-                    self.student_input)
+            html = render_template('static/html/answer_editable.html', {
+                'self': self,
+                'max_length': Answer._meta.get_field('student_input').max_length,
+            })
         else:
-            html = u'<blockquote class="answer read_only">{}</blockquote>'.format(self.student_input)
+            html = render_template('static/html/answer_read_only.html', {
+                'self': self,
+            })
         
         fragment = Fragment(html)
         fragment.add_css(load_resource('static/css/answer.css'))

mentoring/mentoring.py

@@ -88,6 +88,7 @@ class MentoringBlock(XBlock):
                 completed = completed and child_result['completed']
 
         self.completed = bool(completed)
+        self.save()
 
         return {
             'submitResults': submit_results,

mentoring/quizz.py

@@ -105,9 +105,6 @@ class QuizzBlock(XBlock):
             'completed': completed,
             'tip': formatted_tip,
         }
-        log.debug(u'display_with_defaults: %s, reject_with_defaults: %s',
-                  self.display_with_defaults,
-                  self.reject_with_defaults)
         log.debug(u'Quizz submission result: %s', result)
         return result
 

static/html/answer_editable.html

+<textarea cols="100" rows="10" maxlength="{{ max_length }}" name="input">
+  {{ self.student_input }}
+</textarea>

static/html/answer_read_only.html

+<blockquote class="answer read_only">
+  {{ self.student_input|linebreaksbr }}
+</blockquote>
+