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170 lines
3.0 KiB
170 lines
3.0 KiB
from chartkick.django import PieChart
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from django.contrib.auth.decorators import login_required
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from django.db.models import Count
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from django.shortcuts import render, get_object_or_404
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from django.views.decorators.csrf import requires_csrf_token
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from polls.models import Poll, Option, Vote
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@login_required
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def polls(
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request,
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):
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context = {}
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context["polls"] = Poll.objects.all()
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return render(
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request,
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template_name="polls/polls.html",
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context=context,
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)
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def already_voted(
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user,
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poll,
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):
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vote = Vote.objects.filter(
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poll=poll,
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user=user,
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)
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return vote.exists()
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@login_required
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def poll_results(
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request,
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poll_id,
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):
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context = {}
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poll = get_object_or_404(
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Poll,
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pk=poll_id,
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)
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context["poll"] = poll
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results = Vote.objects.filter(
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poll=poll,
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).values(
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"option",
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).annotate(
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count=Count("option"),
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)
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colors = [
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"#dd966b",
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"#a1b0f7",
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"#ffd83d",
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"#8ac3a3",
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"#dec2cb",
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]
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legend = []
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index = 0
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for option in results:
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legend.append(
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{
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"color": colors[index % len(colors)],
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"option": Option.objects.get(pk=option["option"]).text,
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"count": option["count"],
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}
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)
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index += 1
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chart_data = {
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Option.objects.get(pk=option["option"]).text: option["count"]
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for option in results
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}
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context["chart"] = PieChart(
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data=chart_data,
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width="384px",
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height="384px",
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legend=False,
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colors=colors,
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)
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context["legend"] = legend
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return render(
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request,
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template_name="polls/poll_results.html",
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context=context,
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)
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@login_required
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def poll_details(
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request,
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poll_id,
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):
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poll = get_object_or_404(
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Poll,
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pk=poll_id,
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)
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if already_voted(
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request.user,
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poll,
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):
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return poll_results(
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request,
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poll_id,
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)
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context = {}
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context["poll"] = poll
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context["options"] = Option.objects.filter(
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poll=poll,
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).order_by(
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"pk",
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)
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return render(
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request,
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template_name="polls/poll_details.html",
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context=context,
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)
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@login_required
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@requires_csrf_token
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def cast_vote(
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request,
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poll_id,
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option_id,
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):
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poll = get_object_or_404(
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Poll,
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pk=poll_id,
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)
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vote = Vote.objects.filter(
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poll=poll,
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user=request.user,
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)
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if vote.exists():
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return poll_results(
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request,
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poll_id=poll_id,
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)
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option = get_object_or_404(
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Option,
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pk=option_id,
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)
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vote = Vote()
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vote.poll = poll
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vote.option = option
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vote.user = request.user
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vote.save()
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return poll_results(
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request,
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poll_id=poll_id,
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)
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