Add UI for instructors to add and edit classes

apiserver/apiserver/api/models.py

@@ -73,6 +73,7 @@ class Session(models.Model):
     old_instructor = models.TextField(blank=True, null=True)
     datetime = models.DateTimeField(blank=True, null=True)
     cost = models.DecimalField(max_digits=5, decimal_places=2)
+    max_students = models.IntegerField(blank=True, null=True)
 
 class Training(models.Model):
     user = models.ForeignKey(User, related_name='training', blank=True, null=True, on_delete=models.SET_NULL)

apiserver/apiserver/api/serializers.py

@@ -236,6 +236,7 @@ class SessionSerializer(serializers.ModelSerializer):
     class Meta:
         model = models.Session
         fields = '__all__'
+        read_only_fields = ['old_instructor']
     def get_student_count(self, obj):
         return len(obj.students.all())
     def get_course_name(self, obj):