Calculate instructor name correctly

apiserver/apiserver/api/models.py

@@ -6,7 +6,7 @@ from django.utils.timezone import now
 from . import old_models
 
 class Member(models.Model):
-    user = models.OneToOneField(User, blank=True, null=True, on_delete=models.SET_NULL)
+    user = models.OneToOneField(User, related_name='member', blank=True, null=True, on_delete=models.SET_NULL)
     old_email = models.CharField(max_length=254, blank=True, null=True)
     photo_large = models.CharField(max_length=64, blank=True, null=True)
     photo_medium = models.CharField(max_length=64, blank=True, null=True)
@@ -69,6 +69,7 @@ class Session(models.Model):
     instructor = models.ForeignKey(User, related_name='teaching', blank=True, null=True, on_delete=models.SET_NULL)
     course = models.ForeignKey(Course, related_name='sessions', blank=True, null=True, on_delete=models.SET_NULL)
 
+    is_cancelled = models.BooleanField(default=False)
     old_instructor = models.TextField(blank=True, null=True)
     datetime = models.DateTimeField(blank=True, null=True)
     cost = models.DecimalField(max_digits=5, decimal_places=2)

apiserver/apiserver/api/serializers.py

@@ -225,19 +225,27 @@ class TransactionSerializer(serializers.ModelSerializer):
         fields = '__all__'
 
 
-class SessionDetailSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = models.Training
-        exclude = ['user']
 
 class SessionSerializer(serializers.ModelSerializer):
     student_count = serializers.SerializerMethodField()
+    course_name = serializers.SerializerMethodField()
+    instructor_name = serializers.SerializerMethodField()
+    datetime = serializers.DateTimeField()
+    instructor = serializers.PrimaryKeyRelatedField(queryset=models.User.objects.all())
+    course = serializers.PrimaryKeyRelatedField(queryset=models.Course.objects.all())
     class Meta:
         model = models.Session
         fields = '__all__'
-        depth = 1
     def get_student_count(self, obj):
         return len(obj.students.all())
+    def get_course_name(self, obj):
+        return obj.course.name
+    def get_instructor_name(self, obj):
+        if obj.instructor and hasattr(obj.instructor, 'member'):
+            name = '{} {}'.format(obj.instructor.member.preferred_name, obj.instructor.member.last_name[0])
+        else:
+            name = 'Unknown'
+        return obj.old_instructor or name
 
 class SessionListSerializer(SessionSerializer):
     class Meta:
@@ -245,6 +253,7 @@ class SessionListSerializer(SessionSerializer):
         fields = '__all__'
 
 
+
 class CourseSerializer(serializers.ModelSerializer):
     name = serializers.CharField()
     class Meta:

apiserver/apiserver/api/views.py

@@ -140,8 +140,9 @@ class CourseViewSet(Base, List, Retrieve, Create, Update):
             return serializers.CourseDetailSerializer
 
 
-class SessionViewSet(viewsets.ModelViewSet):
-    permission_classes = [AllowMetadata | IsAuthenticated]
+class SessionViewSet(Base, List, Retrieve, Create, Update):
+    permission_classes = [AllowMetadata | IsAuthenticated, IsAdminOrReadOnly | IsInstructorOrReadOnly]
+    serializer_class = serializers.SessionSerializer
 
     def get_queryset(self):
         if self.action == 'list':
@@ -149,12 +150,6 @@ class SessionViewSet(viewsets.ModelViewSet):
         else:
             return models.Session.objects.all()
 
-    def get_serializer_class(self):
-        #if self.action == 'retrieve':
-        #    return serializers.CourseDetailSerializer
-        #else:
-        return serializers.SessionSerializer
-
 
 class UserView(views.APIView):
     permission_classes = [AllowMetadata | IsAuthenticated]