def get(request):
"""
Pass graph data to frontend.
"""
timeline = InstallationStatistics.timeline()
students, courses, instances = InstallationStatistics.data_per_period()
instances_count, courses_count, students_count = InstallationStatistics.overall_counts(
)
first_datetime_of_update_data, last_datetime_of_update_data = get_data_created_datetime_scope(
)
context = {
'timeline': json.dumps(timeline),
'students': json.dumps(students),
'courses': json.dumps(courses),
'instances': json.dumps(instances),
'instances_count': instances_count,
'courses_count': courses_count,
'students_count': students_count,
'first_datetime_of_update_data': first_datetime_of_update_data,
'last_datetime_of_update_data': last_datetime_of_update_data
}
return render(request, 'charts/graphs.html', context)
def test_data_per_period(self):
"""
Verify that data_per_period method annotates by day with trunc and then sums statistics amounts.
"""
result = InstallationStatistics.data_per_period()
self.assertEqual(
([10, 10, 10, 5, 10], [2, 2, 2, 1, 2], [2, 2, 2, 1, 2]), result
)