src/apps/ecidadania/news/views.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # Copyright (c) 2013 Clione Software
   4 # Copyright (c) 2010-2013 Cidadania S. Coop. Galega
   5 #
   6 # Licensed under the Apache License, Version 2.0 (the "License");
   7 # you may not use this file except in compliance with the License.
   8 # You may obtain a copy of the License at
   9 #
  10 #     http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 # Unless required by applicable law or agreed to in writing, software
  13 # distributed under the License is distributed on an "AS IS" BASIS,
  14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15 # See the License for the specific language governing permissions and
  16 # limitations under the License.
  17
  18 from django.http import HttpResponse, HttpResponseRedirect
  19 from django.shortcuts import render_to_response, get_object_or_404, redirect
  20 from django.utils.decorators import method_decorator
  21 from django.contrib.auth.decorators import login_required, permission_required
  22 from django.views.generic.base import TemplateView, RedirectView
  23 from django.views.generic.list import ListView
  24 from django.views.generic.edit import CreateView, UpdateView, DeleteView
  25 from django.views.generic.detail import DetailView
  26 from django.views.generic import FormView
  27 from django.template import RequestContext
  28 from django.contrib.auth.models import User
  29 from django.core.urlresolvers import reverse
  30 from django.core.exceptions import PermissionDenied
  31 from guardian.shortcuts import assign_perm
  32
  33 from core.spaces import url_names as urln
  34 from core.spaces.models import Space
  35 from apps.ecidadania.news.models import Post
  36 from apps.ecidadania.news.forms import NewsForm
  37
  38
  39 class AddPost(FormView):
  40
  41     """
  42     Create a new post. Only registered users belonging to a concrete group
  43     are allowed to create news. only site administrators will be able to
  44     post news in the index page.
  45
  46     .. versionadded: 0.1
  47
  48     :permissions required: admin_space, mod_space
  49     :parameters: space_url
  50     :context: get_place
  51     """
  52     form_class = NewsForm
  53     template_name = 'news/post_form.html'
  54
  55     def dispatch(self, request, *args, **kwargs):
  56         space = get_object_or_404(Space, url=kwargs['space_url'])
  57
  58         if (request.user.has_perm('admin_space', space) or
  59             request.user.has_perm('mod_space', space)):
  60             return super(AddPost, self).dispatch(request, *args, **kwargs)
  61         else:
  62             raise PermissionDenied
  63
  64     def get_success_url(self):
  65         space = self.kwargs['space_url']
  66         return reverse(urln.SPACE_INDEX, kwargs={'space_url': space})
  67
  68     def form_valid(self, form):
  69         self.space = get_object_or_404(Space, url=self.kwargs['space_url'])
  70         form_uncommited = form.save(commit=False)
  71         form_uncommited.author = self.request.user
  72         form_uncommited.space = self.space
  73         form_uncommited.save()
  74         return super(AddPost, self).form_valid(form)
  75
  76     def get_context_data(self, **kwargs):
  77         context = super(AddPost, self).get_context_data(**kwargs)
  78         self.space = get_object_or_404(Space, url=self.kwargs['space_url'])
  79         context['get_place'] = self.space
  80         return context
  81
  82
  83 class ViewPost(DetailView):
  84
  85     """
  86     View a specific post.
  87
  88     :permissions required: view_space
  89     """
  90     context_object_name = 'news'
  91     template_name = 'news/post_detail.html'
  92
  93     def dispatch(self, request, *args, **kwargs):
  94         space = get_object_or_404(Space, url=kwargs['space_url'])
  95
  96         if request.user.has_perm('view_space', space):
  97             return super(ViewPost, self).dispatch(request, *args, **kwargs)
  98         else:
  99             raise PermissionDenied
 100
 101     def get_object(self):
 102         post = Post.objects.get(pk=self.kwargs['post_id'])
 103         try:
 104             post.views = post.views + 1
 105         except:
 106             post.views = 1
 107         post.save()
 108         return post
 109
 110     def get_context_data(self, **kwargs):
 111
 112         """
 113         Get extra context data for the ViewPost view.
 114         """
 115         context = super(ViewPost, self).get_context_data(**kwargs)
 116         context['get_place'] = get_object_or_404(Space, url=self.kwargs['space_url'])
 117         return context
 118
 119
 120 class EditPost(UpdateView):
 121
 122     """
 123     Edit an existent post.
 124
 125     :permissions required: admin_space, mod_space
 126     :parameters: space_url, post_id
 127     :context: get_place
 128     """
 129     model = Post
 130     template_name = 'news/post_form.html'
 131
 132     def dispatch(self, request, *args, **kwargs):
 133         space = get_object_or_404(Space, url=kwargs['space_url'])
 134
 135         if (request.user.has_perm('admin_space', space) or
 136             request.user.has_perm('mod_space', space)):
 137             return super(EditPost, self).dispatch(request, *args, **kwargs)
 138         else:
 139             raise PermissionDenied
 140
 141     def form_valid(self, form):
 142         self.space = get_object_or_404(Space, url=self.kwargs['space_url'])
 143         form_uncommited = form.save(commit=False)
 144         form_uncommited.author = self.request.user
 145         form_uncommited.space = self.space
 146         form_uncommited.save()
 147         return super(EditPost, self).form_valid(form)
 148
 149     def get_success_url(self):
 150         space = self.kwargs['space_url']
 151         return reverse(urln.SPACE_INDEX, kwargs={'space_url': space})
 152
 153     def get_object(self):
 154         cur_post = get_object_or_404(Post, pk=self.kwargs['post_id'])
 155         return cur_post
 156
 157     def get_context_data(self, **kwargs):
 158         context = super(EditPost, self).get_context_data(**kwargs)
 159         context['get_place'] = get_object_or_404(Space, url=self.kwargs['space_url'])
 160         return context
 161
 162
 163 class DeletePost(DeleteView):
 164
 165     """
 166     Delete an existent post. Post deletion is only reserved to spaces
 167     administrators or site admins.
 168     """
 169     context_object_name = "get_place"
 170
 171     def dispatch(self, request, *args, **kwargs):
 172         space = get_object_or_404(Space, url=kwargs['space_url'])
 173
 174         if (request.user.has_perm('admin_space', space) or
 175             request.user.has_perm('mod_space', space)):
 176             return super(DeletePost, self).dispatch(request, *args, **kwargs)
 177         else:
 178             raise PermissionDenied
 179
 180     def get_success_url(self):
 181         space = self.kwargs['space_url']
 182         return reverse(urln.SPACE_INDEX, kwargs={'space_url': space})
 183
 184     def get_object(self):
 185         return get_object_or_404(Post, pk=self.kwargs['post_id'])
 186
 187     def get_context_data(self, **kwargs):
 188
 189         """
 190         Get extra context data for the ViewPost view.
 191         """
 192         context = super(DeletePost, self).get_context_data(**kwargs)
 193         context['get_place'] = get_object_or_404(Space, url=self.kwargs['space_url'])
 194         return context