bornhack-website/src/program/mixins.py

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from django.views.generic.detail import SingleObjectMixin
from django.shortcuts import redirect, get_object_or_404
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from django.urls import reverse
from . import models
from django.contrib import messages
from django.http import Http404, HttpResponse
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class EnsureCFPOpenMixin(object):
def dispatch(self, request, *args, **kwargs):
# do not permit this action if call for participation is not open
if not self.camp.call_for_participation_open:
messages.error(request, "The Call for Participation is not open.")
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return redirect(
reverse('program:proposal_list', kwargs={'camp_slug': self.camp.slug})
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)
# alright, continue with the request
return super().dispatch(request, *args, **kwargs)
class EnsureUnapprovedProposalMixin(SingleObjectMixin):
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def dispatch(self, request, *args, **kwargs):
# do not permit editing if the proposal is already approved
if self.get_object().proposal_status == models.UserSubmittedModel.PROPOSAL_APPROVED:
messages.error(request, "This proposal has already been approved. Please contact the organisers if you need to modify something.")
return redirect(reverse('program:proposal_list', kwargs={'camp_slug': self.camp.slug}))
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# alright, continue with the request
return super().dispatch(request, *args, **kwargs)
class EnsureWritableCampMixin(object):
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def dispatch(self, request, *args, **kwargs):
# do not permit view if camp is in readonly mode
if self.camp.read_only:
messages.error(request, "No thanks")
return redirect(reverse('program:proposal_list', kwargs={'camp_slug': self.camp.slug}))
# alright, continue with the request
return super().dispatch(request, *args, **kwargs)
class EnsureUserOwnsProposalMixin(SingleObjectMixin):
def dispatch(self, request, *args, **kwargs):
# make sure that this proposal belongs to the logged in user
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if self.get_object().user.username != request.user.username:
messages.error(request, "No thanks")
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return redirect(
reverse('program:proposal_list', kwargs={'camp_slug': self.camp.slug})
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)
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# alright, continue with the request
return super().dispatch(request, *args, **kwargs)
class UrlViewMixin(object):
"""
Mixin with code shared between all the Url views
"""
def dispatch(self, request, *args, **kwargs):
"""
Check that we have a valid SpeakerProposal or EventProposal and that it belongs to the current user
"""
# get the proposal
if 'event_uuid' in self.kwargs:
self.eventproposal = get_object_or_404(models.EventProposal, uuid=self.kwargs['event_uuid'], user=request.user)
elif 'speaker_uuid' in self.kwargs:
self.speakerproposal = get_object_or_404(models.SpeakerProposal, uuid=self.kwargs['speaker_uuid'], user=request.user)
else:
# fuckery afoot
raise Http404
return super().dispatch(request, *args, **kwargs)
def get_context_data(self, **kwargs):
"""
Include the proposal in the template context
"""
context = super().get_context_data(**kwargs)
if hasattr(self, 'eventproposal') and self.eventproposal:
context['eventproposal'] = self.eventproposal
else:
context['speakerproposal'] = self.speakerproposal
return context
def get_success_url(self):
"""
Return to the detail view of the proposal
"""
if hasattr(self, 'eventproposal'):
return self.eventproposal.get_absolute_url()
else:
return self.speakerproposal.get_absolute_url()