Generated: Mon 2013-04-29 09:50 CEST
Source file: /home/tobi/Projects/django-frequently/src/frequently/views.py
Stats: 118 executed, 0 missed, 9 excluded, 95 ignored
"""
Views for the ``django-frequently`` application.
"""
from math import fsum
from django.contrib.auth.models import User
from django.core.urlresolvers import reverse
from django.http import HttpResponse, HttpResponseNotFound
from django.template.response import TemplateResponse
from django.utils import timezone
from django.views.generic import CreateView, DetailView, ListView
from frequently.forms import EntryForm
from frequently.models import Entry, EntryCategory, Feedback
class EntryMixin(object):
"""
Mixin to handle and arrange the entry list.
"""
def get_ordered_entries(self, queryset=False):
"""
Custom ordering. First we get the average views and rating for
the categories's entries. Second we created a rank by multiplying
both. Last, we sort categories by this rank from top to bottom.
Example:
- Cat_1
- Entry_1 (500 Views, Rating 2)
- Entry_2 (200 Views, Rating -4)
- Entry_3 (100 Views, Rating 3)
- Cat_2
- Entry_1 (200 Views, Rating 7)
- Entry_2 (50 Views, Rating 2)
Result:
Cat_1 has a rank by: 88.88 (avg. views: 266.66, avg. rating: 0.33)
Cat_2 has a rank by: 562.5 (avg. views: 125, avg. rating: 4.5)
Cat_2 will be displayed at the top. The algorithm is quality-oriented,
as you can see.
"""
if queryset:
self.queryset = queryset
else:
self.queryset = EntryCategory.objects.all()
if self.queryset:
for category in self.queryset:
entries = category.get_entries()
if entries:
amount_list = [e.amount_of_views for e in entries]
rating_list = [e.rating() for e in entries]
views_per_entry = fsum(amount_list) / len(amount_list)
rating_per_entry = fsum(rating_list) / len(rating_list)
category.last_rank = views_per_entry * rating_per_entry
category.save()
else:
self.queryset = self.queryset.exclude(pk=category.pk)
self.queryset = sorted(self.queryset, key=lambda c: c.last_rank,
reverse=True)
return self.queryset
def post(self, request, *args, **kwargs):
if "get_answer" in request.POST.keys():
entry = Entry.objects.get(pk=request.POST['get_answer'])
entry.last_view_date = timezone.now()
entry.amount_of_views += 1
entry.save()
return TemplateResponse(
request,
'frequently/partials/answer.html',
{
'entry': entry,
'rated_entries': self.request.session.get(
'rated_entries', False),
},
)
self.feedback = Feedback()
if "user_id" in request.POST.keys():
try:
user_id = int(request.POST.get('user_id'))
try:
self.feedback.user = User.objects.get(pk=user_id)
except User.DoesNotExist:
pass
except ValueError:
pass
if 'ratingID' in request.POST.keys() and request.is_ajax():
try:
entry_id = int(request.POST.get('ratingID').replace(
'ratingID', ''))
try:
entry = Entry.objects.get(pk=entry_id)
return HttpResponse(entry.rating())
except Entry.DoesNotExist:
return HttpResponseNotFound()
except ValueError:
return HttpResponseNotFound()
for key in request.POST.keys():
if key.startswith('up') or key.startswith('down'):
try:
entry_id = int(key.replace('up', '').replace('down', ''))
try:
entry = Entry.objects.get(pk=entry_id)
except Entry.DoesNotExist:
return HttpResponseNotFound()
except ValueError:
return HttpResponseNotFound()
if not request.session.get('rated_entries', False):
request.session['rated_entries'] = []
if not entry.pk in request.session['rated_entries']:
request.session['rated_entries'].append(entry.pk)
request.session.modified = True
self.feedback.entry = entry
if key.startswith('up'):
entry.upvotes += 1
self.feedback.validation = "P"
if key.startswith('down'):
entry.downvotes += 1
self.feedback.validation = "N"
entry.save()
self.feedback.save()
if request.is_ajax():
return TemplateResponse(
request,
'frequently/partials/feedback_form.html',
{
'feedback_entry': entry.pk,
'feedback': self.feedback,
},
)
elif key.startswith('feedback'):
try:
feedback_id = int(key.replace('feedback', ''))
try:
self.feedback = Feedback.objects.get(pk=feedback_id)
except Feedback.DoesNotExist:
return HttpResponseNotFound()
except ValueError:
return HttpResponseNotFound()
self.feedback.remark = request.POST.get("remark")
self.feedback.save()
if request.is_ajax():
return TemplateResponse(
request,
'frequently/partials/feedback_form.html',
{'feedback_send': True},
)
return self.get(self, request, *args, **kwargs)
class EntryCategoryListView(EntryMixin, ListView):
"""
Main view to display all categories and their entries.
"""
model = EntryCategory
template_name = "frequently/entry_list.html"
def get_queryset(self):
"""
Customized to get the ordered categories and entries from the Mixin.
"""
self.queryset = super(EntryCategoryListView, self).get_queryset()
return self.get_ordered_entries(self.queryset)
class EntryDetailView(EntryMixin, DetailView):
"""
Main view to display one entry.
"""
model = Entry
template_name = "frequently/entry_list.html"
def get_object(self, **kwargs):
obj = super(EntryDetailView, self).get_object(**kwargs)
obj.last_view_date = timezone.now()
obj.amount_of_views += 1
obj.save()
return obj
def get_context_data(self, **kwargs):
context = super(EntryDetailView, self).get_context_data(**kwargs)
context.update({
'rated_entries': self.request.session.get('rated_entries', False),
'object_list': self.get_ordered_entries(),
})
for key in self.request.POST.keys():
if key.startswith('down') or key.startswith('up'):
context.update({
'feedback_entry': int(
key.replace('up', '').replace('down', '')),
'feedback': self.feedback,
})
return context
return context
class EntryCreateView(CreateView):
"""
Feedback submission form view.
"""
model = Entry
form_class = EntryForm
def get_form_kwargs(self):
kwargs = super(EntryCreateView, self).get_form_kwargs()
if self.request.user.is_authenticated():
kwargs.update({
'owner': self.request.user,
})
return kwargs
def get_success_url(self):
return reverse('frequently_list')