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Episodes.Community/Show/views.py

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from django.shortcuts import render
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from django.shortcuts import render
from django.views import View
from django.views.generic.base import TemplateView
from django.conf import settings
from django.http import Http404
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from django.http import HttpResponse
from django.http import HttpResponseRedirect
from django.db.models import Case, When, Value, IntegerField, Count, F
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from LandingPage.models import User
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from LandingPage.models import Show
from LandingPage.models import Season
from LandingPage.models import Episode
from LandingPage.models import Submission, SubmissionVote
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# Create your views here.
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# Index page of a show
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class IndexView(TemplateView):
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template_name = "show.html"
def get_context_data(self, abbreviation, **kwargs):
ctx = super().get_context_data()
# Get show by abbreviation, add episode count to the show and return only the first object
show = Show.objects.filter(abbr=abbreviation).first()
# 404
if not show:
raise Http404("Show does not exist")
# Get all seasons of the show and annotate episode counts onto them
seasons = show.seasons.all()
# Add fields to context
ctx['show'] = show
ctx['seasons'] = seasons
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return ctx
# Episodes page of a show
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class EpisodeView(TemplateView):
template_name = "episode.html"
def get_context_data(self, abbreviation, season, episode, **kwargs):
ctx = super().get_context_data()
# Get show by abbreviation
show = Show.objects.filter(abbr=abbreviation).first()
# Get episode by season and episode number
episode = Episode.objects.filter(show=show,episode=episode).first()
# 404's
if not show:
raise Http404("Show does not exist")
if not episode:
raise Http404("Episode does not exist")
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# I aknowledge that this is a mess. A functional mess. But a mess nonetheless. Hey, that rhymed!
submissions = episode.submissions.annotate(
positives=Count(
Case(
When(
votes__positive=True,
then=Value(1)
)
)
),
negatives=Count('votes') - F('positives'),
score=F('positives') - F('negatives')
).order_by('-score')
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# Add fields to context
ctx['show'] = show
ctx['episode'] = episode
ctx['submissions'] = submissions
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return ctx
# Vote request
# /show/{{abbr}}/vote/{{submission id}}/{{positive == 1}}
class SubmissionVoteSubmit(View):
def get (self, req, abbreviation, subid, positive):
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# Convert positive parameter into a boolean
pos_bool = int(positive) == 1
# Check for login status
if not req.session['user_id']:
r = HttpResponse('<h1>Error</h1><p>You need to be logged in to vote. Please <a href=/login>log in</a></p>')
r.status = 400
return r
user = User.objects.get(user_id=req.session['user_id'])
# Get the submission from the database
submission = Submission.objects.filter(id=subid).first()
# 404
if not submission:
raise Http404("Submission does not exist")
# Prevent voting for own submission
if submission.user == user:
r = HttpResponse('<h1>Error</h1><p>You cannot vote for your own submission.</p>')
r.status = 400
return r
# Allow changing a vote from positive to negative or vice-versa. Delete vote if its a re-vote
vote = submission.votes.filter(user=user,submission__id=submission.id).first()
if vote:
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if not vote.positive == pos_bool:
vote.positive = pos_bool
vote.save()
else:
vote.delete()
else:
new_vote = SubmissionVote(
user=user,
submission=submission,
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positive=pos_bool
)
new_vote.save()
return HttpResponseRedirect('/show/%s/episode/%d/%d'%(abbreviation, submission.episode.season.number, submission.episode.episode))