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views.py
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views.py
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# -*- coding: utf-8 -*-
import csv
from collections import defaultdict
from datetime import datetime
from StringIO import StringIO
import time
from django.http import HttpResponse
from django.shortcuts import render
from django.utils.translation import ugettext as _
from django.utils.formats import date_format
from django_countries import countries
from wiki.models import URLPath, Article
from course_wiki.utils import course_wiki_slug
from courseware.courses import get_course_by_id
from opaque_keys.edx.keys import CourseKey
from util.views import ensure_valid_course_key
from fun.utils.views import staff_required, staff_required_or_level
from . import stats
@ensure_valid_course_key
@staff_required_or_level('staff')
def enrollment_stats(request, course_id):
enrollments = stats.EnrollmentStats(course_id)
return enrollment_stats_response(request, enrollments, 'course_dashboard/enrollment-stats.html')
@staff_required
def global_enrollment_stats(request):
enrollments = stats.EnrollmentStats(None)
return enrollment_stats_response(request, enrollments, 'course_dashboard/enrollment-stats-global.html')
def enrollment_stats_response(request, enrollments, template):
if request.GET.get("format") == "csv":
return csv_response(["date", "enrollments"], enrollments.per_date, "enrollments.csv")
context = enrollment_stats_context(enrollments)
return render(request, template, context)
def enrollment_stats_context(enrollments):
enrollments_per_day, enrollments_per_timestamp = formatted_dates(enrollments.per_date)
best_day = None
worst_day = None
if enrollments_per_day:
best_day = max(enrollments_per_day, key=lambda e: e[1])
worst_day = min(enrollments_per_day, key=lambda e: e[1])
return {
"active_tab": "enrollment_stats",
"course_id": enrollments.course_id,
"enrollments_per_day": enrollments_per_day,
"enrollments_per_timestamp": enrollments_per_timestamp,
"average_enrollments_per_day": enrollments.daily_average(),
"best_day": best_day,
"worst_day": worst_day,
"total_population": enrollments.total(),
"day_span": enrollments.day_span(),
}
@ensure_valid_course_key
@staff_required_or_level('staff')
def student_map(request, course_id):
course_population_by_country_code = stats.population_by_country(course_id)
return student_map_response(request, course_population_by_country_code,
'course_dashboard/student-map.html', course_id)
@staff_required
def global_student_map(request):
course_population_by_country_code = stats.population_by_country(None)
return student_map_response(request, course_population_by_country_code,
'course_dashboard/student-map-global.html', None)
def student_map_response(request, course_population_by_country_code, template, course_id):
top_countries = sorted(
[(population, code, get_country_name(code))
for code, population in course_population_by_country_code.iteritems()],
reverse=True
)
if request.GET.get("format") == "csv":
data_rows = [(country, population) for population, _code, country in top_countries]
return csv_response(["country", "enrollments"], data_rows, "countries.csv")
total_population = sum(course_population_by_country_code.values())
return render(request, template, {
"active_tab": "student_map",
"course_id": course_id,
"course_population": course_population_by_country_code,
"top_countries": top_countries,
"total_population": total_population,
})
def get_country_name(country_code):
if country_code == '':
return unicode(_("Unknown"))
return unicode(countries.name(country_code))
@ensure_valid_course_key
@staff_required_or_level('staff')
def forum_activity(request, course_id):
threads = stats.forum_threads(course_id)
threads_per_date = stats.forum_threads_per_day(threads)
if request.GET.get("format") == "csv":
return csv_response(["date", "threads"], threads_per_date, "forum-activity.csv")
threads_per_day, threads_per_timestamp = formatted_dates(threads_per_date)
total_threads = len(threads)
most_active_thread = None
least_active_thread = None
most_active_user = stats.most_active_user(threads)
if threads:
most_active_thread = max(threads, key=lambda t: t["comments_count"])
least_active_thread = min(threads, key=lambda t: t["comments_count"])
return render(request, 'course_dashboard/forum-activity.html', {
"active_tab": "forum_activity",
"course_id": course_id,
"threads_per_day": threads_per_day,
"threads_per_timestamp": threads_per_timestamp,
"most_active_thread": most_active_thread,
"least_active_thread": least_active_thread,
"total_threads": total_threads,
"most_active_user": most_active_user,
})
def get_urlpath(course_id):
"""Returns url path of root wiki page for course."""
# Offical edX way to replace slashes by dots: course_key.replace('/', '.')
course_key = CourseKey.from_string(course_id)
course = get_course_by_id(course_key)
course_slug = course_wiki_slug(course)
try:
urlpath = URLPath.get_by_path(course_slug)
except URLPath.DoesNotExist:
urlpath = None
return urlpath
@ensure_valid_course_key
@staff_required_or_level('staff')
def wiki_activity(request, course_id):
urlpath = get_urlpath(course_id)
data = {}
data['article_creation'] = defaultdict(int)
data['revision_counts'] = defaultdict(int)
data['article_revision'] = defaultdict(int)
data['user_activity'] = defaultdict(int)
data['urlpaths'] = []
data['page_count'] = 0
if urlpath:
root = Article.objects.get(id=urlpath.id) # get the root article of the course
urlpaths = root.descendant_objects()
for urlpath in urlpaths:
data['urlpaths'].append(urlpath)
data['article_creation'][urlpath.article.created.date()] += 1
for revision in urlpath.article.articlerevision_set.all():
data['revision_counts'][urlpath] += 1
data['article_revision'][revision.created.date()] += 1
# use Article owner if revision is anonymous (tests)
data['user_activity'][revision.user or urlpath.article.owner] += 1
series = []
series.append(sorted(formatted_dates(data['article_creation'].items())[1], key=lambda item: item[0]))
series.append(sorted(formatted_dates(data['article_revision'].items())[1], key=lambda item: item[0]))
most_active_pages = sorted(
data['revision_counts'].items(), key=lambda item: item[1], reverse=True)
last_created = sorted(data['urlpaths'], key=lambda item: item.article.created, reverse=True)
most_active_users = sorted(data['user_activity'].items(), key=lambda item: item[1], reverse=True)
return render(request, 'course_dashboard/wiki-activity.html', {
"series": series,
"most_active_pages": most_active_pages,
"last_created": last_created,
"most_active_users": most_active_users,
"page_count": len(data['urlpaths']),
"user_count": len(data['user_activity'].items()),
"revision_count": sum(data['article_revision'].values()),
"active_tab": "wiki_activity",
"course_id": course_id,
})
def csv_response(header_row, data_rows, filename):
def encode_data(data):
if isinstance(data, unicode):
return data.encode('utf-8')
elif isinstance(data, datetime):
return data.strftime('%Y/%m/%d')
else:
return data
response_content = StringIO()
writer = csv.writer(response_content)
writer.writerow(header_row)
for data_row in data_rows:
writer.writerow([encode_data(d) for d in data_row])
response_content.seek(0)
response = HttpResponse(response_content.read(), content_type='text/csv')
response['Content-Disposition'] = 'attachment; filename="{}"'.format(filename)
return response
def formatted_dates(date_list):
"""Formats a (date, value) list for usage in a template.
Arguments:
date_list ((datetime, value) list)
Returns:
(str, value) list
[int, value] list
"""
stats_per_day = [
(date_format(date), count) for date, count in date_list
]
stats_per_timestamp = [
[date_to_js_timestamp(date), count] for date, count in date_list
]
return stats_per_day, stats_per_timestamp
def date_to_js_timestamp(date):
"""Convert a date to a javascript timestamp.
Arguments:
date (datetime)
Returns:
timestamp (int): the timestamp is for js usage, i.e: it is 1000x the
python timestamp.
"""
return time.mktime(date.timetuple())*1000