[NDPD-1222] Submissions should allow score points to have a decimal value

submissions/__init__.py

@@ -1 +1 @@
-__version__ = u'2.0.14'
+__version__ = u'2.0.15'

submissions/migrations/0006_auto_20180510_0732.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+from decimal import Decimal
+import django.core.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('submissions', '0005_remove_django_extensions'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='score',
+            name='points_earned',
+            field=models.DecimalField(default=Decimal('0.0'), max_digits=6, decimal_places=2, validators=[django.core.validators.MinValueValidator(Decimal('0.0'))]),
+        ),
+        migrations.AlterField(
+            model_name='score',
+            name='points_possible',
+            field=models.DecimalField(default=Decimal('0.0'), max_digits=6, decimal_places=2, validators=[django.core.validators.MinValueValidator(Decimal('0.0'))]),
+        ),
+    ]

submissions/models.py

@@ -10,8 +10,10 @@
 
 """
 import logging
+from decimal import Decimal
 from uuid import uuid4
 
+from django.core.validators import MinValueValidator
 from django.db import models, DatabaseError
 from django.db.models.signals import post_save
 from django.dispatch import receiver, Signal
@@ -177,8 +179,18 @@ class Score(models.Model):
     """
     student_item = models.ForeignKey(StudentItem)
     submission = models.ForeignKey(Submission, null=True)
-    points_earned = models.PositiveIntegerField(default=0)
-    points_possible = models.PositiveIntegerField(default=0)
+    points_earned = models.DecimalField(
+        decimal_places=2,
+        default=Decimal('0.0'),
+        max_digits=6,
+        validators=[MinValueValidator(Decimal('0.0'))]
+    )
+    points_possible = models.DecimalField(
+        decimal_places=2,
+        default=Decimal('0.0'),
+        max_digits=6,
+        validators=[MinValueValidator(Decimal('0.0'))]
+    )
     created_at = models.DateTimeField(editable=False, default=now, db_index=True)
 
     # Flag to indicate that this score should reset the current "highest" score
@@ -214,9 +226,9 @@ def to_float(self):
             float or None
 
         """
-        if self.points_possible == 0:
+        if self.points_possible == Decimal('0.0'):
             return None
-        return float(self.points_earned) / self.points_possible
+        return float(self.points_earned / self.points_possible)
 
     def __repr__(self):
         return repr(dict(
@@ -236,7 +248,7 @@ def is_hidden(self):
             bool: Whether the score should be hidden.
 
         """
-        return self.points_possible == 0
+        return self.points_possible == Decimal('0.0')
 
     @classmethod
     def create_reset_score(cls, student_item):
@@ -264,7 +276,7 @@ def create_reset_score(cls, student_item):
             student_item=student_item,
             submission=None,
             points_earned=0,
-            points_possible=0,
+            points_possible=Decimal('0.0'),
             reset=True,
         )