def _compute_app_rating(self, days: int = -1,
threshold: int = 5) -> Tuple[float, int]:
"""
Computes an app rating based on
:param days: passing 30 will only consider ratings from the last
30 days,
pass a negative number to include all ratings
:param threshold: if the amount of ratings is lower than this
number
return 0.5
:return: the app rating
"""
app_ratings = AppRating.objects.filter(app=self.app)
if days >= 0:
range = timezone.now() - datetime.timedelta(days=days)
app_ratings = app_ratings.filter(rated_at__gte=range)
ratings = map(lambda r: r.rating, app_ratings)
return compute_rating(list(ratings), threshold)
def _compute_app_rating(self, days: int = -1,
threshold: int = 5) -> Tuple[float, int]:
"""
Computes an app rating based on
:param days: passing 30 will only consider ratings from the last
30 days,
pass a negative number to include all ratings
:param threshold: if the amount of ratings is lower than this
number
return 0.5
:return: the app rating
"""
app_ratings = AppRating.objects.filter(app=self.app)
if days >= 0:
range = timezone.now() - datetime.timedelta(days=days)
app_ratings = app_ratings.filter(rated_at__gte=range)
ratings = map(lambda r: r.rating, app_ratings)
return compute_rating(list(ratings), threshold)
def test_full_rating(self):
result, num = compute_rating([1.0, 1.0, 0.5, 0.5], 1)
self.assertEqual(0.75, result)
self.assertEqual(4, num)
def test_no_ratings(self):
result, num = compute_rating([], -1)
self.assertEqual(0.5, result)
self.assertEqual(0, num)
def test_simple_rating(self):
result, num = compute_rating([1.0], 0)
self.assertEqual(1.0, result)
self.assertEqual(1, num)
def test_below_threshold_rating(self):
result, num = compute_rating([1.0], 2)
self.assertEqual(0.5, result)
self.assertEqual(0, num)
