from django.views.generic.detail import SingleObjectMixin from django.shortcuts import redirect from django.urls import reverse from . import models from django.contrib import messages class CreateProposalMixin(SingleObjectMixin): def form_valid(self, form): # set camp and user before saving form.instance.camp = self.camp form.instance.user = self.request.user speaker = form.save() return redirect(reverse('proposal_list', kwargs={'camp_slug': self.camp.slug})) class EnsureUnpprovedProposalMixin(SingleObjectMixin): 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." % self.camp.title) return redirect(reverse('proposal_list', kwargs={'camp_slug': self.camp.slug})) # alright, continue with the request return super().dispatch(request, *args, **kwargs) class EnsureWritableCampMixin(SingleObjectMixin): 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('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 if self.get_object().user.username != request.user.username: messages.error(request, "No thanks") return redirect(reverse('proposal_list', kwargs={'camp_slug': self.camp.slug})) # alright, continue with the request return super().dispatch(request, *args, **kwargs)