feat: add exam allowance model (#287)

edx_exams/apps/core/admin.py

@@ -12,6 +12,7 @@
     Exam,
     ExamAttempt,
     ProctoringProvider,
+    StudentAllowance,
     User
 )
 
@@ -103,3 +104,20 @@ class CourseStaffRoleAdmin(admin.ModelAdmin):
     list_filter = ('course_id',)
     search_fields = ('user__username', 'course_id')
     ordering = ('course_id',)
+
+
+@admin.register(StudentAllowance)
+class StudentAllowanceAdmin(admin.ModelAdmin):
+    """ Admin configuration for the Student Allowance model """
+    list_display = ('username', 'course_id', 'exam_name', 'extra_time_mins')
+    search_fields = ('user__username', 'exam__course_id', 'exam__exam_name')
+    ordering = ('-modified',)
+
+    def username(self, obj):
+        return obj.user.username
+
+    def exam_name(self, obj):
+        return obj.exam.exam_name
+
+    def course_id(self, obj):
+        return obj.exam.course_id

edx_exams/apps/core/migrations/0026_studentallowance.py

@@ -0,0 +1,33 @@
+# Generated by Django 4.2.13 on 2024-07-11 15:45
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+import model_utils.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0025_proctoringprovider_org_key'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='StudentAllowance',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created', model_utils.fields.AutoCreatedField(default=django.utils.timezone.now, editable=False, verbose_name='created')),
+                ('modified', model_utils.fields.AutoLastModifiedField(default=django.utils.timezone.now, editable=False, verbose_name='modified')),
+                ('extra_time_mins', models.PositiveIntegerField()),
+                ('exam', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.exam')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'verbose_name': 'student allowance',
+                'db_table': 'exams_studentallowance',
+                'unique_together': {('user', 'exam')},
+            },
+        ),
+    ]

edx_exams/apps/core/models.py

@@ -428,3 +428,22 @@ def _sync_exams_with_new_provider(cls, course_id, new_provider):
             exam.save()
 
         return len(exams)
+
+
+class StudentAllowance(TimeStampedModel):
+    """
+    Allowance for extra time in an exam
+
+    .. no_pii:
+    """
+    user = models.ForeignKey(User, db_index=True, on_delete=models.CASCADE)
+
+    exam = models.ForeignKey(Exam, on_delete=models.CASCADE)
+
+    extra_time_mins = models.PositiveIntegerField()
+
+    class Meta:
+        """ Meta class for this Django model """
+        db_table = 'exams_studentallowance'
+        verbose_name = 'student allowance'
+        unique_together = ('user', 'exam')