233 lines
7.8 KiB
Python
233 lines
7.8 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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''' Django views. '''
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from django.shortcuts import render, redirect, get_object_or_404
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from django.urls import reverse_lazy
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from django.views.generic.edit import CreateView, UpdateView, DeleteView
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from django.views.generic.detail import SingleObjectMixin
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from django.views.generic import ListView
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from django.views import View
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from django.http import Http404
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from django.contrib import messages
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from django.contrib.auth.mixins import UserPassesTestMixin, LoginRequiredMixin
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from django.contrib.messages.views import SuccessMessageMixin
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from .forms import (
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ExplorerCreationForm,
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PlaceForm,
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PlaceImageCreateForm
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)
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from .models import Place, PlaceImage, Voucher, PhotoAlbum
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# Create your views here.
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# BaseView that checks if user is logged in.
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class IsAuthenticated(LoginRequiredMixin, View):
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redirect_field_name = 'redirect_to'
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permission_denied_message = 'Please login to proceed'
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def handle_no_permission(self):
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messages.error(self.request, self.permission_denied_message)
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return super().handle_no_permission()
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# BaseView that checks if logged in user is submitter of place.
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class IsPlaceSubmitter(UserPassesTestMixin, View):
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place_submitter_error_message = None
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def get_place(self):
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pass
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def test_func(self):
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""" Check if user is eligible to modify place. """
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if not hasattr(self.request, 'user'):
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return False
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if self.request.user.is_superuser:
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return True
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# Check if currently logged in user was the submitter
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place_obj = self.get_place()
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if place_obj and hasattr(place_obj, 'submitted_by') and self.request.user == place_obj.submitted_by:
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return True
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if self.place_submitter_error_message:
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messages.error(self.request, self.place_submitter_error_message)
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return False
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class SignUpView(SuccessMessageMixin, CreateView):
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form_class = ExplorerCreationForm
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success_url = reverse_lazy('login')
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template_name = 'signup.html'
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success_message = 'User created.'
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class PlaceListView(IsAuthenticated, ListView):
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paginate_by = 5
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model = Place
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template_name = 'place/place_list.html'
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ordering = ['name']
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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context['place_map_center'] = Place.average_latlon(context['place_list'])
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return context
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class PlaceDetailView(IsAuthenticated, View):
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def get(self, request, pk):
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place = Place.objects.get(pk=pk)
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context = {
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'place': place,
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'place_list': [ place ],
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'place_map_center': [ place.latitude, place.longitude ]
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}
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return render(request, 'place/place_detail.html', context)
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class HomeView(View):
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def get(self, request, *args, **kwargs):
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place_list = Place.objects.all().order_by('-submitted_when')[:10]
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place_map_center = Place.average_latlon(place_list)
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context = {
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'place_list': place_list,
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'place_map_center': place_map_center
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}
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return render(request, 'home.html', context)
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class PlaceUpdateView(IsAuthenticated, IsPlaceSubmitter, SuccessMessageMixin, UpdateView):
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template_name = 'place/place_update.html'
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model = Place
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form_class = PlaceForm
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success_message = 'Successfully updated place.'
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place_submitter_error_message = 'You do no have permissions to alter this place'
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def get_success_url(self):
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return reverse_lazy('place_detail', kwargs={'pk':self.get_object().pk})
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def get_place(self):
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return self.get_object()
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class PlaceCreateView(IsAuthenticated, View):
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def get(self, request, *args, **kwargs):
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place_image_form = PlaceImageCreateForm()
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place_form = PlaceForm()
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context = {
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'place_form': place_form,
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'place_image_form': place_image_form
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}
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return render(request, 'place/place_create.html', context)
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def post(self, request, *args, **kwargs):
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place_form = PlaceForm(request.POST)
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if place_form.is_valid():
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submitter = request.user
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place = place_form.save(commit=False)
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# Save logged in user as "submitted_by"
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place.submitted_by = submitter
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place.save()
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if request.FILES:
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self._apply_multipart_image_upload(
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files=request.FILES.getlist('filename'),
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place=place,
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submitter=submitter
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)
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kwargs_to_pass = {
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'pk': place.pk
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}
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messages.success(
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self.request, 'Successfully created place.')
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return redirect(reverse_lazy('place_detail', kwargs=kwargs_to_pass))
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else:
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context = {
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'form': form_place
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}
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# Usually the browser should have checked the form before sending.
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messages.error(
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self.request, 'Please fill in all required fields.')
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return render(request, 'place/place_create.html', context)
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def _apply_multipart_image_upload(self, files, place, submitter):
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for image in files:
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place_image = PlaceImage.objects.create(
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filename=image,
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place=place,
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submitted_by=submitter
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)
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place_image.save()
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class PlaceDeleteView(IsAuthenticated, IsPlaceSubmitter, DeleteView):
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template_name = 'place/place_delete.html'
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model = Place
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success_message = 'Successfully deleted place.'
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success_url = reverse_lazy('place_list')
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success_message = 'Place deleted'
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place_submitter_error_message = 'You do no have permission to delete this place'
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def delete(self, request, *args, **kwargs):
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messages.success(self.request, self.success_message)
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return super().delete(request, *args, **kwargs)
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def get_place(self):
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return self.get_object()
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class PhotoAlbumCreateView(IsAuthenticated, SuccessMessageMixin, CreateView):
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model = PhotoAlbum
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fields = ['url', 'label']
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template_name = 'photo_album/photo_album_create.html'
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success_message = 'Photo Album submitted'
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def get(self, request, place_id, *args, **kwargs):
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self.place = Place.objects.get(pk=place_id)
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return super().get(request, *args, **kwargs)
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def post(self, request, place_id, *args, **kwargs):
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self.place = Place.objects.get(pk=place_id)
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response = super().post(request, *args, **kwargs)
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self.object.place = self.place
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self.object.submitted_by = request.user
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self.object.save()
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return response
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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context['place'] = self.place
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return context
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def get_success_url(self):
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return reverse_lazy('place_detail', kwargs={'pk': self.place.id})
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class PhotoAlbumDeleteView(IsAuthenticated, IsPlaceSubmitter, SingleObjectMixin, View):
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model = PhotoAlbum
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pk_url_kwarg = 'pk'
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success_message = 'Photo Album deleted'
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def get_place(self):
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place_id = self.get_object().place.id
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return Place.objects.get(pk=place_id)
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def test_func(self):
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can_edit_place = super().test_func()
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if can_edit_place:
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return True
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if self.get_object().submitted_by == self.request.user:
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return True
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messages.error(self.request, 'You do not have permissions to alter this photo album')
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return False
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def get(self, request, *args, **kwargs):
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place_id = self.get_object().place.id
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self.get_object().delete()
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messages.success(self.request, self.success_message)
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return redirect(reverse_lazy('place_detail', kwargs={'pk': place_id}))
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