Add new djangoapp that allows for configuration of

Verified Track Cohorts through the admin interface.

lms/djangoapps/verified_track_content/admin.py

@@ -0,0 +1,14 @@
+"""
+Django admin page for verified track configuration
+"""
+
+from django.contrib import admin
+
+from verified_track_content.forms import VerifiedTrackCourseForm
+from verified_track_content.models import VerifiedTrackCohortedCourse
+
+
+@admin.register(VerifiedTrackCohortedCourse)
+class VerifiedTrackCohortedCourseAdmin(admin.ModelAdmin):
+    """Admin for enabling verified track cohorting. """
+    form = VerifiedTrackCourseForm

lms/djangoapps/verified_track_content/forms.py

@@ -0,0 +1,54 @@
+"""
+Forms for configuring courses for verified track cohorting
+"""
+from django import forms
+
+from django.utils.translation import ugettext as _
+
+from xmodule.modulestore.django import modulestore
+from opaque_keys import InvalidKeyError
+from opaque_keys.edx.keys import CourseKey
+
+from verified_track_content.models import VerifiedTrackCohortedCourse
+
+
+class VerifiedTrackCourseForm(forms.ModelForm):
+    """Validate course keys for the VerifiedTrackCohortedCourse model
+
+    The default behavior in Django admin is to:
+    * Save course keys for courses that do not exist.
+    * Return a 500 response if the course key format is invalid.
+
+    Using this form ensures that we display a user-friendly
+    error message instead.
+
+    """
+    class Meta(object):  # pylint:disable=missing-docstring
+        model = VerifiedTrackCohortedCourse
+        fields = '__all__'
+
+    def clean_course_key(self):
+        """Validate the course key.
+
+        Checks that the key format is valid and that
+        the course exists.  If not, displays an error message.
+
+        Arguments:
+            field_name (str): The name of the field to validate.
+
+        Returns:
+            CourseKey
+
+        """
+        cleaned_id = self.cleaned_data['course_key']
+        error_msg = _('COURSE NOT FOUND.  Please check that the course ID is valid.')
+
+        try:
+            course_key = CourseKey.from_string(cleaned_id)
+        except InvalidKeyError:
+            raise forms.ValidationError(error_msg)
+
+        if not modulestore().has_course(course_key):
+            raise forms.ValidationError(error_msg)
+
+        return course_key

lms/djangoapps/verified_track_content/migrations/0001_initial.py

@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import xmodule_django.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='VerifiedTrackCohortedCourse',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('course_key', xmodule_django.models.CourseKeyField(help_text='The course key for the course we would like to be auto-cohorted.', unique=True, max_length=255, db_index=True)),
+                ('enabled', models.BooleanField()),
+            ],
+        ),
+    ]

lms/djangoapps/verified_track_content/models.py

@@ -0,0 +1,39 @@
+"""
+Models for verified track selections.
+"""
+from django.db import models
+from django.utils.translation import ugettext_lazy
+
+from xmodule_django.models import CourseKeyField
+
+
+class VerifiedTrackCohortedCourse(models.Model):
+    """
+    Tracks which courses have verified track auto-cohorting enabled.
+    """
+    course_key = CourseKeyField(
+        max_length=255, db_index=True, unique=True,
+        help_text=ugettext_lazy(u"The course key for the course we would like to be auto-cohorted.")
+    )
+
+    enabled = models.BooleanField()
+
+    def __unicode__(self):
+        return u"Course: {}, enabled: {}".format(unicode(self.course_key), self.enabled)
+
+    @classmethod
+    def is_verified_track_cohort_enabled(cls, course_key):
+        """
+        Checks whether or not verified track cohort is enabled for the given course.
+
+        Args:
+            course_key (CourseKey): a course key representing the course we want to check
+
+        Returns:
+            True if the course has verified track cohorts is enabled
+            False if not
+        """
+        try:
+            return cls.objects.get(course_key=course_key).enabled
+        except cls.DoesNotExist:
+            return False

lms/djangoapps/verified_track_content/tests/test_forms.py

@@ -0,0 +1,45 @@
+"""
+Test for forms helpers.
+"""
+from opaque_keys.edx.keys import CourseKey
+
+from xmodule.modulestore.tests.factories import CourseFactory
+from xmodule.modulestore.tests.django_utils import SharedModuleStoreTestCase
+
+from verified_track_content.forms import VerifiedTrackCourseForm
+
+
+class TestVerifiedTrackCourseForm(SharedModuleStoreTestCase):
+    """
+    Test form validation.
+    """
+
+    FAKE_COURSE = 'edX/Test_Course/Run'
+    BAD_COURSE_KEY = 'bad_course_key'
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestVerifiedTrackCourseForm, cls).setUpClass()
+        cls.course = CourseFactory.create()
+
+    def test_form_validation_success(self):
+        form_data = {'course_key': unicode(self.course.id), 'enabled': True}
+        form = VerifiedTrackCourseForm(data=form_data)
+        self.assertTrue(form.is_valid())
+
+    def test_form_validation_failure(self):
+        form_data = {'course_key': self.FAKE_COURSE, 'enabled': True}
+        form = VerifiedTrackCourseForm(data=form_data)
+        self.assertFalse(form.is_valid())
+        self.assertEqual(
+            form.errors['course_key'],
+            ['COURSE NOT FOUND.  Please check that the course ID is valid.']
+        )
+
+        form_data = {'course_key': self.BAD_COURSE_KEY, 'enabled': True}
+        form = VerifiedTrackCourseForm(data=form_data)
+        self.assertFalse(form.is_valid())
+        self.assertEqual(
+            form.errors['course_key'],
+            ['COURSE NOT FOUND.  Please check that the course ID is valid.']
+        )

lms/djangoapps/verified_track_content/tests/test_models.py

@@ -0,0 +1,37 @@
+"""
+Tests for Verified Track Cohorting models
+"""
+from django.test import TestCase
+
+from opaque_keys.edx.keys import CourseKey
+
+from verified_track_content.models import VerifiedTrackCohortedCourse
+
+
+class TestVerifiedTrackCohortedCourse(TestCase):
+    """
+    Tests that the configuration works as expected.
+    """
+    SAMPLE_COURSE = 'edX/Test_Course/Run'
+
+    def test_course_enabled(self):
+        course_key = CourseKey.from_string(self.SAMPLE_COURSE)
+        # Test when no configuration exists
+        self.assertFalse(VerifiedTrackCohortedCourse.is_verified_track_cohort_enabled(course_key))
+
+        # Enable for a course
+        config = VerifiedTrackCohortedCourse.objects.create(course_key=course_key, enabled=True)
+        config.save()
+        self.assertTrue(VerifiedTrackCohortedCourse.is_verified_track_cohort_enabled(course_key))
+
+        # Disable for the course
+        config.enabled = False
+        config.save()
+        self.assertFalse(VerifiedTrackCohortedCourse.is_verified_track_cohort_enabled(course_key))
+
+    def test_unicode(self):
+        course_key = CourseKey.from_string(self.SAMPLE_COURSE)
+        # Enable for a course
+        config = VerifiedTrackCohortedCourse.objects.create(course_key=course_key, enabled=True)
+        config.save()
+        self.assertEqual(unicode(config), "Course: {}, enabled: True".format(self.SAMPLE_COURSE))

lms/envs/common.py

@@ -2016,6 +2016,9 @@ INSTALLED_APPS = (
 
     # Management commands used for configuration automation
     'edx_management_commands.management_commands',
+
+    # Verified Track Content Cohorting
+    'verified_track_content',
 )
 
 # Migrations which are not in the standard module "migrations"