Merge pull request #1276 from MITx/feature/vik/add-peer-grading-notifications

Feature/vik/add peer grading notifications

lms/djangoapps/courseware/tabs.py

@@ -11,6 +11,7 @@ actually generates the CourseTab.
 
 from collections import namedtuple
 import logging
+import json
 
 from django.conf import settings
 from django.core.urlresolvers import reverse
@@ -20,6 +21,9 @@ from fs.errors import ResourceNotFoundError
 from courseware.access import has_access
 from static_replace import replace_urls
 
+from open_ended_grading.peer_grading_service import PeerGradingService
+from student.models import unique_id_for_user
+
 log = logging.getLogger(__name__)
 
 class InvalidTabsException(Exception):
@@ -28,7 +32,10 @@ class InvalidTabsException(Exception):
     """
     pass
 
-CourseTab = namedtuple('CourseTab', 'name link is_active')
+CourseTabBase = namedtuple('CourseTab', 'name link is_active has_img img')
+
+def CourseTab(name, link, is_active, has_img=False, img=""):
+    return CourseTabBase(name, link, is_active, has_img, img)
 
 # encapsulate implementation for a tab:
 #  - a validation function: takes the config dict and raises
@@ -104,6 +111,28 @@ def _staff_grading(tab, user, course, active_page):
         return [CourseTab('Staff grading', link, active_page == "staff_grading")]
     return []
 
+def _peer_grading(tab, user, course, active_page):
+    if user.is_authenticated():
+        link = reverse('peer_grading', args=[course.id])
+        peer_gs = PeerGradingService(settings.PEER_GRADING_INTERFACE)
+        pending_grading=False
+        tab_name = "Peer grading"
+        img_path= ""
+        try:
+            notifications = json.loads(peer_gs.get_notifications(course.id,unique_id_for_user(user)))
+            if notifications['success']:
+                if notifications['student_needs_to_peer_grade']:
+                    pending_grading=True
+        except:
+            #Non catastrophic error, so no real action
+            log.info("Problem with getting notifications from peer grading service.")
+
+        if pending_grading:
+            img_path = "/static/images/slider-handle.png"
+
+        tab = [CourseTab(tab_name, link, active_page == "peer_grading", pending_grading, img_path)]
+        return tab
+    return []
 
 #### Validators
 
@@ -140,6 +169,7 @@ VALID_TAB_TYPES = {
     'textbooks': TabImpl(null_validator, _textbooks),
     'progress': TabImpl(need_name, _progress),
     'static_tab': TabImpl(key_checker(['name', 'url_slug']), _static_tab),
+    'peer_grading': TabImpl(null_validator, _peer_grading),
     'staff_grading': TabImpl(null_validator, _staff_grading),
     }
 

lms/djangoapps/open_ended_grading/peer_grading_service.py

@@ -79,6 +79,7 @@ class PeerGradingService(GradingService):
         self.show_calibration_essay_url = self.url + '/show_calibration_essay/'
         self.save_calibration_essay_url = self.url + '/save_calibration_essay/'
         self.get_problem_list_url = self.url + '/get_problem_list/'
+        self.get_notifications_url = self.url + '/get_notifications/'
 
     def get_next_submission(self, problem_location, grader_id):
         response = self.get(self.get_next_submission_url,
@@ -116,6 +117,11 @@ class PeerGradingService(GradingService):
         response = self.get(self.get_problem_list_url, params)
         return response
 
+    def get_notifications(self, course_id, grader_id):
+        params = {'course_id': course_id, 'student_id': grader_id}
+        response = self.get(self.get_notifications_url, params)
+        return response
+
 
 _service = None
 def peer_grading_service():

lms/templates/courseware/course_navigation.html

@@ -18,7 +18,12 @@ def url_class(is_active):
     <ol class="course-tabs">
       % for tab in get_course_tabs(user, course, active_page):
           <li>
-             <a href="${tab.link | h}" class="${url_class(tab.is_active)}">${tab.name | h}</a>
+             <a href="${tab.link | h}" class="${url_class(tab.is_active)}">
+                 ${tab.name | h}
+                 % if tab.has_img == True:
+                    <img src="${tab.img}"/>
+                 %endif
+             </a>
           </li>
       % endfor
     <%block name="extratabs" />

lms/templates/peer_grading/peer_grading.html

@@ -8,7 +8,7 @@
 
 <%block name="title"><title>${course.number} Peer Grading</title></%block>
 
-<%include file="/courseware/course_navigation.html" args="active_page='staff_grading'" />
+<%include file="/courseware/course_navigation.html" args="active_page='peer_grading'" />
 
 <%block name="js_extra">
   <%static:js group='peer_grading'/>

lms/templates/peer_grading/peer_grading_problem.html

@@ -9,7 +9,7 @@
 
 <%block name="title"><title>${course.number} Peer Grading.</title></%block>
 
-<%include file="/courseware/course_navigation.html" args="active_page='staff_grading'" />
+<%include file="/courseware/course_navigation.html" args="active_page='peer_grading'" />
 
 <%block name="js_extra">
   <%static:js group='peer_grading'/>