107 lines
4.1 KiB
Python
107 lines
4.1 KiB
Python
from django.views.generic.detail import SingleObjectMixin
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from django.shortcuts import redirect
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from django.urls import reverse
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from . import models
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from django.contrib import messages
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from django.http import Http404, HttpResponse
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import sys
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import mimetypes
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class EnsureCFSOpenMixin(SingleObjectMixin):
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def dispatch(self, request, *args, **kwargs):
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# do not permit editing if call for speakers is not open
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if not self.camp.call_for_speakers_open:
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messages.error(request, "The Call for Speakers is not open.")
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return redirect(
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reverse('proposal_list', kwargs={'camp_slug': self.camp.slug})
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)
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# alright, continue with the request
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return super().dispatch(request, *args, **kwargs)
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class CreateProposalMixin(SingleObjectMixin):
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def form_valid(self, form):
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# set camp and user before saving
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form.instance.camp = self.camp
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form.instance.user = self.request.user
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form.save()
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return redirect(
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reverse('proposal_list', kwargs={'camp_slug': self.camp.slug})
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)
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class EnsureUnapprovedProposalMixin(SingleObjectMixin):
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def dispatch(self, request, *args, **kwargs):
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# do not permit editing if the proposal is already approved
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if self.get_object().proposal_status == models.UserSubmittedModel.PROPOSAL_APPROVED:
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messages.error(request, "This proposal has already been approved. Please contact the organisers if you need to modify something.")
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return redirect(reverse('proposal_list', kwargs={'camp_slug': self.camp.slug}))
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# alright, continue with the request
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return super().dispatch(request, *args, **kwargs)
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class EnsureWritableCampMixin(SingleObjectMixin):
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def dispatch(self, request, *args, **kwargs):
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# do not permit view if camp is in readonly mode
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if self.camp.read_only:
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messages.error(request, "No thanks")
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return redirect(reverse('proposal_list', kwargs={'camp_slug': self.camp.slug}))
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# alright, continue with the request
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return super().dispatch(request, *args, **kwargs)
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class EnsureUserOwnsProposalMixin(SingleObjectMixin):
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def dispatch(self, request, *args, **kwargs):
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# make sure that this proposal belongs to the logged in user
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if self.get_object().user.username != request.user.username:
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messages.error(request, "No thanks")
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return redirect(
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reverse('proposal_list', kwargs={'camp_slug': self.camp.slug})
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)
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# alright, continue with the request
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return super().dispatch(request, *args, **kwargs)
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class PictureViewMixin(SingleObjectMixin):
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def dispatch(self, request, *args, **kwargs):
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# do we have the requested picture?
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if kwargs['picture'] == 'thumbnail':
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if self.get_object().picture_small:
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self.picture = self.get_object().picture_small
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else:
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raise Http404()
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elif kwargs['picture'] == 'large':
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if self.get_object().picture_large:
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self.picture = self.get_object().picture_large
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else:
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raise Http404()
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else:
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# only 'thumbnail' and 'large' pictures supported
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raise Http404()
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# alright, continue with the request
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return super().dispatch(request, *args, **kwargs)
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def get_picture_response(self, path):
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if 'runserver' in sys.argv or 'runserver_plus' in sys.argv:
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# this is a local devserver situation, guess mimetype from extension and return picture directly
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response = HttpResponse(
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self.picture,
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content_type=mimetypes.types_map[".%s" % self.picture.name.split(".")[-1]]
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)
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else:
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# make nginx serve the picture using X-Accel-Redirect
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# (this works for nginx only, other webservers use x-sendfile)
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# TODO: maybe make the header name configurable
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response = HttpResponse()
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response['X-Accel-Redirect'] = path
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response['Content-Type'] = ''
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return response
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