apps/catalogue/views.py

   1 # -*- coding: utf-8 -*-
   2 from django.template import RequestContext
   3 from django.shortcuts import render_to_response, get_object_or_404
   4 from django.http import HttpResponse, HttpResponseRedirect, Http404
   5 from django.core.urlresolvers import reverse
   6 from django.db.models import Q
   7 from django.contrib.auth.decorators import login_required
   8 from django.utils.datastructures import SortedDict
   9 from django.views.decorators.http import require_POST
  10 from django.contrib import auth
  11 from django.contrib.auth.forms import UserCreationForm, AuthenticationForm
  12 from django.utils import simplejson
  13 from django.utils.functional import Promise
  14 from django.utils.encoding import force_unicode
  15 from django.views.decorators.cache import cache_page
  16
  17 from catalogue import models
  18 from catalogue import forms
  19 from catalogue.utils import split_tags
  20 from newtagging import views as newtagging_views
  21
  22
  23 class LazyEncoder(simplejson.JSONEncoder):
  24     def default(self, obj):
  25         if isinstance(obj, Promise):
  26             return force_unicode(obj)
  27         return obj
  28
  29
  30 def search(request):
  31     query = request.GET.get('q', '')
  32     tags = request.GET.get('tags', '')
  33     if tags == '':
  34         tags = []
  35
  36     try:
  37         tag_list = models.Tag.get_tag_list(tags)
  38         tag = models.Tag.objects.get(name=query)
  39     except models.Tag.DoesNotExist:
  40         try:
  41             book = models.Book.objects.get(title=query)
  42             return HttpResponseRedirect(book.get_absolute_url())
  43         except models.Book.DoesNotExist:
  44             return HttpResponseRedirect(reverse('catalogue.views.main_page'))
  45     else:
  46         tag_list.append(tag)
  47         return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list',
  48             kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
  49         ))
  50
  51
  52 def tags_starting_with(request):
  53     try:
  54         prefix = request.GET['q']
  55         if len(prefix) < 2:
  56             raise KeyError
  57
  58         books = models.Book.objects.filter(title__icontains=prefix)
  59         tags = models.Tag.objects.filter(name__icontains=prefix)
  60         if request.user.is_authenticated():
  61             tags = tags.filter(~Q(category='set') | Q(user=request.user))
  62         else:
  63             tags = tags.filter(~Q(category='set'))
  64
  65         completions = [book.title for book in books] + [tag.name for tag in tags]
  66
  67         return HttpResponse('\n'.join(completions))
  68
  69     except KeyError:
  70         return HttpResponse('')
  71
  72
  73 def main_page(request):
  74     if request.user.is_authenticated():
  75         shelves = models.Tag.objects.filter(category='set', user=request.user)
  76         new_set_form = forms.NewSetForm()
  77     extra_where = 'NOT catalogue_tag.category = "set"'
  78     tags = models.Tag.objects.usage_for_model(models.Book, counts=True, extra={'where': [extra_where]})
  79     fragment_tags = models.Tag.objects.usage_for_model(models.Fragment, counts=True,
  80         extra={'where': ['catalogue_tag.category = "theme"'] + [extra_where]})
  81     categories = split_tags(tags)
  82
  83     form = forms.SearchForm()
  84     return render_to_response('catalogue/main_page.html', locals(),
  85         context_instance=RequestContext(request))
  86
  87
  88 def book_list(request):
  89     books = models.Book.objects.all()
  90     form = forms.SearchForm()
  91
  92     books_by_first_letter = SortedDict()
  93     for book in books:
  94         books_by_first_letter.setdefault(book.title[0], []).append(book)
  95
  96     return render_to_response('catalogue/book_list.html', locals(),
  97         context_instance=RequestContext(request))
  98
  99
 100 def tagged_object_list(request, tags=''):
 101     # Prevent DoS attacks on our database
 102     if len(tags.split('/')) > 6:
 103         raise Http404
 104
 105     try:
 106         tags = models.Tag.get_tag_list(tags)
 107     except models.Tag.DoesNotExist:
 108         raise Http404
 109
 110     model = models.Book
 111     shelf_is_set = (len(tags) == 1 and tags[0].category == 'set')
 112     theme_is_set = any(tag.category == 'theme' for tag in tags)
 113     if theme_is_set:
 114         model = models.Fragment
 115
 116     extra_where = 'NOT catalogue_tag.category = "set"'
 117     related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
 118     categories = split_tags(related_tags)
 119
 120     if not theme_is_set:
 121         model=models.Book.objects.filter(parent=None)
 122
 123     return newtagging_views.tagged_object_list(
 124         request,
 125         tag_model=models.Tag,
 126         queryset_or_model=model,
 127         tags=tags,
 128         template_name='catalogue/tagged_object_list.html',
 129         extra_context = {'categories': categories, 'shelf_is_set': shelf_is_set },
 130     )
 131
 132
 133 def book_detail(request, slug):
 134     book = get_object_or_404(models.Book, slug=slug)
 135     tags = list(book.tags.filter(~Q(category='set')))
 136     categories = split_tags(tags)
 137     book_children = book.children.all().order_by('parent_number')
 138
 139     form = forms.SearchForm()
 140     return render_to_response('catalogue/book_detail.html', locals(),
 141         context_instance=RequestContext(request))
 142
 143
 144 @cache_page(60 * 60)
 145 def book_text(request, slug):
 146     book = get_object_or_404(models.Book, slug=slug)
 147     book_themes = {}
 148     for fragment in book.fragments.all():
 149         for theme in fragment.tags.filter(category='theme'):
 150             book_themes.setdefault(theme, []).append(fragment)
 151
 152     book_themes = book_themes.items()
 153     book_themes.sort(key=lambda s: s[0].sort_key)
 154     return render_to_response('catalogue/book_text.html', locals(),
 155         context_instance=RequestContext(request))
 156
 157
 158 def logout_then_redirect(request):
 159     auth.logout(request)
 160     return HttpResponseRedirect(request.GET.get('next', '/'))
 161
 162
 163 @require_POST
 164 def register(request):
 165     registration_form = UserCreationForm(request.POST, prefix='registration')
 166     if registration_form.is_valid():
 167         user = registration_form.save()
 168         user = auth.authenticate(
 169             username=registration_form.cleaned_data['username'],
 170             password=registration_form.cleaned_data['password1']
 171         )
 172         auth.login(request, user)
 173         response_data = {'success': True, 'errors': {}}
 174     else:
 175         response_data = {'success': False, 'errors': registration_form.errors}
 176     return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
 177
 178
 179 @require_POST
 180 def login(request):
 181     form = AuthenticationForm(data=request.POST, prefix='login')
 182     if form.is_valid():
 183         auth.login(request, form.get_user())
 184         response_data = {'success': True, 'errors': {}}
 185     else:
 186         response_data = {'success': False, 'errors': form.errors}
 187     return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
 188
 189
 190 def book_sets(request, slug):
 191     book = get_object_or_404(models.Book, slug=slug)
 192     user_sets = models.Tag.objects.filter(category='set', user=request.user)
 193     book_sets = book.tags.filter(category='set', user=request.user)
 194
 195     if not request.user.is_authenticated():
 196         return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
 197
 198     if request.method == 'POST':
 199         form = forms.ObjectSetsForm(book, request.user, request.POST)
 200         if form.is_valid():
 201             book.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
 202                 list(book.tags.filter(~Q(category='set') | ~Q(user=request.user))))
 203             if request.is_ajax():
 204                 return HttpResponse('<p>Półki zostały zapisane.</p>')
 205             else:
 206                 return HttpResponseRedirect('/')
 207     else:
 208         form = forms.ObjectSetsForm(book, request.user)
 209         new_set_form = forms.NewSetForm()
 210
 211     return render_to_response('catalogue/book_sets.html', locals(),
 212         context_instance=RequestContext(request))
 213
 214
 215 def fragment_sets(request, id):
 216     fragment = get_object_or_404(models.Fragment, pk=id)
 217     user_sets = models.Tag.objects.filter(category='set', user=request.user)
 218     fragment_sets = fragment.tags.filter(category='set', user=request.user)
 219
 220     if not request.user.is_authenticated():
 221         return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
 222
 223     if request.method == 'POST':
 224         form = forms.ObjectSetsForm(fragment, request.user, request.POST)
 225         if form.is_valid():
 226             fragment.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
 227                 list(fragment.tags.filter(~Q(category='set') | ~Q(user=request.user))))
 228             if request.is_ajax():
 229                 return HttpResponse('<p>Półki zostały zapisane.</p>')
 230             else:
 231                 return HttpResponseRedirect('/')
 232     else:
 233         form = forms.ObjectSetsForm(fragment, request.user)
 234         new_set_form = forms.NewSetForm()
 235
 236     return render_to_response('catalogue/fragment_sets.html', locals(),
 237         context_instance=RequestContext(request))
 238
 239
 240 @login_required
 241 @require_POST
 242 def new_set(request):
 243     new_set_form = forms.NewSetForm(request.POST)
 244     if new_set_form.is_valid():
 245         new_set = new_set_form.save(request.user)
 246
 247         if request.is_ajax():
 248             return HttpResponse(u'<p>Półka <strong>%s</strong> została utworzona</p>' % new_set)
 249         else:
 250             return HttpResponseRedirect('/')
 251
 252     return render_to_response('catalogue/book_sets.html', locals(),
 253             context_instance=RequestContext(request))
 254
 255
 256 @login_required
 257 @require_POST
 258 def delete_shelf(request, slug):
 259     user_set = get_object_or_404(models.Tag, slug=slug, category='set', user=request.user)
 260     user_set.delete()
 261
 262     if request.is_ajax():
 263         return HttpResponse(u'<p>Półka <strong>%s</strong> została usunięta</p>' % user_set.name)
 264     else:
 265         return HttpResponseRedirect('/')
 266
 267
 268 @login_required
 269 def user_shelves(request):
 270     shelves = models.Tag.objects.filter(category='set', user=request.user)
 271     new_set_form = forms.NewSetForm()
 272     return render_to_response('catalogue/user_shelves.html', locals(),
 273             context_instance=RequestContext(request))
 274