1 # -*- coding: utf-8 -*-
2 # Copyright (C) 2008 Lincoln de Sousa <lincoln@minaslivre.org>
4 # This program is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU General Public License as
6 # published by the Free Software Foundation; either version 2 of the
7 # License, or (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # General Public License for more details.
14 # You should have received a copy of the GNU General Public
15 # License along with this program; if not, write to the
16 # Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 # Boston, MA 02111-1307, USA.
18 from django.conf import settings
19 from django.http import HttpResponseRedirect, HttpResponseForbidden
20 from django.contrib.auth import authenticate, login as login_django, \
21 logout as logout_django
22 from django.contrib.auth.models import User, Group
23 from django.forms import HiddenInput, ModelForm
24 from django.shortcuts import render_to_response, get_object_or_404
25 from django.template import RequestContext, Context, loader
26 from eventos.models import Palestrante, Trabalho, TipoTrabalho, Trilha, Evento
27 from eventos.forms import RegisterSpeaker
28 from django.db.models import Q
31 HttpResponseForbidden('<h2>You are not allowed to do this action.<h2>')
33 class SpeakerForm(ModelForm):
36 exclude = ('usuario',)
38 class TalkForm(ModelForm):
43 """This is a function that will be used as a front-end to the
44 django's login system. It receives username and password fields
45 from a POST request and tries to login the user.
47 If login is successful, user will be redirected to the referer
48 address, otherwise will be redirected to /?login_failed.
50 username = request.POST['username']
51 password = request.POST['password']
52 user = authenticate(username=username, password=password)
56 login_django(request, user)
58 request.session.delete_test_cookie()
61 return HttpResponseRedirect('/')
63 return HttpResponseRedirect('/?login_failed')
65 return HttpResponseRedirect('/?login_failed')
67 request.session.set_test_cookie()
68 return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))
71 """Simple front-end to django's logout stuff. This function should
72 be mapped to an url and simply called without any parameter.
74 logout_django(request)
75 return HttpResponseRedirect('/')
77 def speaker_add(request):
78 """Adds a new speaker to the system.
80 uform = RegisterSpeaker(request.POST or None)
82 form = SpeakerForm(request.POST or None)
84 if request.POST and form.is_valid() and uform.is_valid():
85 cd = uform.cleaned_data
86 group = Group.objects.get_or_create(name='palestrantes')[0]
88 # creating the user that will be set as the user of the
90 user = User(username=cd['username'])
91 user.set_password(cd['password1'])
94 user.groups.add(group)
96 # this commit=False is to avoid IntegritErrors, because at
97 # this point, the speaker doesn't have an user associated
99 instance = form.save(commit=False)
100 instance.usuario = user
102 return HttpResponseRedirect('/')
104 c = {'form': form, 'uform': uform}
105 return render_to_response('eventos/speaker-add.html', Context(c),
106 context_instance=RequestContext(request))
108 def speaker_details(request, lid):
109 """Shows a simple form containing all editable fields of a
110 speaker and gives the speaker the possibility to save them =)
112 if not hasattr(request.user, 'palestrante_set'):
115 entity = request.user.palestrante_set.get()
116 if entity.id != int(lid):
119 form = SpeakerForm(request.POST or None, instance=entity)
121 if request.POST and form.is_valid():
125 return render_to_response('eventos/speaker-details.html', Context(c),
126 context_instance=RequestContext(request))
128 def speaker_talks(request, lid):
129 """Lists all talks of a speaker (based on speaker id -- lid
132 if not hasattr(request.user, 'palestrante_set'):
135 entity = request.user.palestrante_set.get()
136 if entity.id != int(lid):
139 talks = Trabalho.objects.filter(
140 Q(palestrante=entity) | Q(outros_palestrantes=entity) )
142 c = {'speaker': entity, 'talks': talks}
143 return render_to_response('eventos/talk-list.html', Context(c),
144 context_instance=RequestContext(request))
146 def talk_details(request, tid):
147 """Shows a form to edit a talk
149 # If the user is not a speaker we should not try to show anything.
150 if not hasattr(request.user, 'palestrante_set'):
153 # Selected in settings.py (SITE_ID) variable, because an event can
154 # be linked with only one site.
155 event = Evento.objects.get(site__id__exact=settings.SITE_ID)
158 entity = get_object_or_404(Trabalho, pk=tid)
159 form = TalkForm(request.POST or None, instance=entity)
161 # avoiding smart people trying to se talks of other speakers.
162 speaker = request.user.palestrante_set.get()
163 if speaker.id != entity.palestrante.id:
166 # These fields should not be shown to the user.
167 form.fields['palestrante'].widget = HiddenInput()
168 form.fields['evento'].widget = HiddenInput()
170 # These fields are event specific
171 trilhas = Trilha.objects.filter(evento=event)
172 form.fields['trilha']._set_queryset(trilhas)
174 tipos = TipoTrabalho.objects.filter(evento=event)
175 form.fields['tipo']._set_queryset(tipos)
177 # hidding the owner in the other speakers list
178 other = Palestrante.objects.exclude(pk=entity.id)
179 form.fields['outros_palestrantes']._set_queryset(other)
180 if other.count() == 0:
181 # I need set the value to '', otherwise the wise django
182 # newforms will fill the field with the invalid string '[]'
183 form.fields['outros_palestrantes'].initial = ''
184 form.fields['outros_palestrantes'].widget = HiddenInput()
186 if request.POST and form.is_valid():
190 return render_to_response('eventos/talk-details.html', Context(c),
191 context_instance=RequestContext(request))
193 def talk_delete(request, tid):
194 """Drops a talk but only if the logged in user is its owner.
196 if not hasattr(request.user, 'palestrante_set'):
199 entity = request.user.palestrante_set.get()
200 talk = Trabalho.objects.filter(pk=tid, palestrante=entity)
205 return HttpResponseRedirect('/speaker/%d/talks/' % entity.id)
207 def talk_add(request):
208 """Shows a form to the speaker send a talk
210 if not hasattr(request.user, 'palestrante_set'):
214 form = TalkForm(request.POST or None)
216 # These fields should not be shown to the user.
218 # Selected in settings.py (SITE_ID) variable, because an event can
219 # be linked with only one site.
220 entity = request.user.palestrante_set.get()
221 form.fields['palestrante'].widget = HiddenInput(attrs={'value' : entity.id})
223 event = Evento.objects.get(site__id__exact=settings.SITE_ID)
224 form.fields['evento'].widget = HiddenInput(attrs={'value' : event.id})
226 # These fields are event specific
227 trilhas = Trilha.objects.filter(evento=event)
228 form.fields['trilha']._set_queryset(trilhas)
230 tipos = TipoTrabalho.objects.filter(evento=event)
231 form.fields['tipo']._set_queryset(tipos)
233 # hidding the owner in the other speakers list
234 other = Palestrante.objects.exclude(pk=entity.id)
235 form.fields['outros_palestrantes']._set_queryset(other)
236 if other.count() == 0:
237 form.fields['outros_palestrantes'].widget = HiddenInput()
239 if request.POST and form.is_valid():
241 cleaned = form.cleaned_data
242 if cleaned['tipo'].evento.id != event.id:
245 if cleaned['trilha'].evento.id != event.id:
248 instance = form.save()
249 return HttpResponseRedirect('/speaker/%d/talks/' % entity.id)
252 return render_to_response('eventos/talk-add.html', Context(c),
253 context_instance=RequestContext(request))