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
  16 from catalogue import models
  17 from catalogue import forms
  18 from catalogue.utils import split_tags
  19 from newtagging import views as newtagging_views
  20
  21
  22 class LazyEncoder(simplejson.JSONEncoder):
  23     def default(self, obj):
  24         if isinstance(obj, Promise):
  25             return force_unicode(obj)
  26         return obj
  27
  28
  29 def search(request):
  30     query = request.GET.get('q', '')
  31     tags = request.GET.get('tags', '')
  32     if tags == '':
  33         tags = []
  34
  35     try:
  36         tag_list = models.Tag.get_tag_list(tags)
  37         tag = models.Tag.objects.get(name=query)
  38     except models.Tag.DoesNotExist:
  39         try:
  40             book = models.Book.objects.get(title=query)
  41             return HttpResponseRedirect(book.get_absolute_url())
  42         except models.Book.DoesNotExist:
  43             return HttpResponseRedirect(reverse('catalogue.views.main_page'))
  44     else:
  45         tag_list.append(tag)
  46         return HttpResponseRedirect(reverse('catalogue.views.tagged_object_list',
  47             kwargs={'tags': '/'.join(tag.slug for tag in tag_list)}
  48         ))
  49
  50
  51 def tags_starting_with(request):
  52     try:
  53         prefix = request.GET['q']
  54         if len(prefix) < 2:
  55             raise KeyError
  56
  57         books = models.Book.objects.filter(title__icontains=prefix)
  58         tags = models.Tag.objects.filter(name__icontains=prefix)
  59         if request.user.is_authenticated():
  60             tags = tags.filter(~Q(category='set') | Q(user=request.user))
  61         else:
  62             tags = tags.filter(~Q(category='set'))
  63
  64         completions = [book.title for book in books] + [tag.name for tag in tags]
  65
  66         return HttpResponse('\n'.join(completions))
  67
  68     except KeyError:
  69         return HttpResponse('')
  70
  71
  72 def main_page(request):
  73     if request.user.is_authenticated():
  74         shelves = models.Tag.objects.filter(category='set', user=request.user)
  75         new_set_form = forms.NewSetForm()
  76     extra_where = 'NOT catalogue_tag.category = "set"'
  77     tags = models.Tag.objects.usage_for_model(models.Book, counts=True, extra={'where': [extra_where]})
  78     fragment_tags = models.Tag.objects.usage_for_model(models.Fragment, counts=True,
  79         extra={'where': ['catalogue_tag.category = "theme"'] + [extra_where]})
  80     categories = split_tags(tags)
  81
  82     form = forms.SearchForm()
  83     return render_to_response('catalogue/main_page.html', locals(),
  84         context_instance=RequestContext(request))
  85
  86
  87 def book_list(request):
  88     books = models.Book.objects.all()
  89     form = forms.SearchForm()
  90
  91     books_by_first_letter = SortedDict()
  92     for book in books:
  93         books_by_first_letter.setdefault(book.title[0], []).append(book)
  94
  95     return render_to_response('catalogue/book_list.html', locals(),
  96         context_instance=RequestContext(request))
  97
  98
  99 def tagged_object_list(request, tags=''):
 100     try:
 101         tags = models.Tag.get_tag_list(tags)
 102     except models.Tag.DoesNotExist:
 103         raise Http404
 104
 105     model = models.Book
 106     theme_is_set = any(tag.category == 'theme' for tag in tags)
 107     if theme_is_set:
 108         model = models.Fragment
 109
 110     extra_where = 'NOT catalogue_tag.category = "set"'
 111     related_tags = models.Tag.objects.related_for_model(tags, model, counts=True, extra={'where': [extra_where]})
 112     categories = split_tags(related_tags)
 113
 114     return newtagging_views.tagged_object_list(
 115         request,
 116         tag_model=models.Tag,
 117         queryset_or_model=model,
 118         tags=tags,
 119         template_name='catalogue/tagged_object_list.html',
 120         extra_context = {'categories': categories },
 121     )
 122
 123
 124 def book_detail(request, slug):
 125     book = get_object_or_404(models.Book, slug=slug)
 126     tags = list(book.tags.filter(~Q(category='set')))
 127     categories = split_tags(tags)
 128
 129     form = forms.SearchForm()
 130     return render_to_response('catalogue/book_detail.html', locals(),
 131         context_instance=RequestContext(request))
 132
 133
 134 def logout_then_redirect(request):
 135     auth.logout(request)
 136     return HttpResponseRedirect(request.GET.get('next', '/'))
 137
 138
 139 @require_POST
 140 def register(request):
 141     registration_form = UserCreationForm(request.POST, prefix='registration')
 142     if registration_form.is_valid():
 143         user = registration_form.save()
 144         user = auth.authenticate(
 145             username=registration_form.cleaned_data['username'],
 146             password=registration_form.cleaned_data['password1']
 147         )
 148         auth.login(request, user)
 149         response_data = {'success': True, 'errors': {}}
 150     else:
 151         response_data = {'success': False, 'errors': registration_form.errors}
 152     return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
 153
 154
 155 @require_POST
 156 def login(request):
 157     form = AuthenticationForm(data=request.POST, prefix='login')
 158     if form.is_valid():
 159         auth.login(request, form.get_user())
 160         response_data = {'success': True, 'errors': {}}
 161     else:
 162         response_data = {'success': False, 'errors': form.errors}
 163     return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
 164
 165
 166 def book_sets(request, slug):
 167     book = get_object_or_404(models.Book, slug=slug)
 168     user_sets = models.Tag.objects.filter(category='set', user=request.user)
 169     book_sets = book.tags.filter(category='set', user=request.user)
 170
 171     if not request.user.is_authenticated():
 172         return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
 173
 174     if request.method == 'POST':
 175         form = forms.ObjectSetsForm(book, request.user, request.POST)
 176         if form.is_valid():
 177             book.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
 178                 list(book.tags.filter(~Q(category='set') | ~Q(user=request.user))))
 179             if request.is_ajax():
 180                 return HttpResponse('<p>Półki zostały zapisane.</p>')
 181             else:
 182                 return HttpResponseRedirect('/')
 183     else:
 184         form = forms.ObjectSetsForm(book, request.user)
 185         new_set_form = forms.NewSetForm()
 186
 187     return render_to_response('catalogue/book_sets.html', locals(),
 188         context_instance=RequestContext(request))
 189
 190
 191 def fragment_sets(request, id):
 192     fragment = get_object_or_404(models.Fragment, pk=id)
 193     user_sets = models.Tag.objects.filter(category='set', user=request.user)
 194     fragment_sets = fragment.tags.filter(category='set', user=request.user)
 195
 196     if not request.user.is_authenticated():
 197         return HttpResponse('<p>Aby zarządzać swoimi półkami, musisz się zalogować.</p>')
 198
 199     if request.method == 'POST':
 200         form = forms.ObjectSetsForm(fragment, request.user, request.POST)
 201         if form.is_valid():
 202             fragment.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
 203                 list(fragment.tags.filter(~Q(category='set') | ~Q(user=request.user))))
 204             if request.is_ajax():
 205                 return HttpResponse('<p>Półki zostały zapisane.</p>')
 206             else:
 207                 return HttpResponseRedirect('/')
 208     else:
 209         form = forms.ObjectSetsForm(fragment, request.user)
 210         new_set_form = forms.NewSetForm()
 211
 212     return render_to_response('catalogue/fragment_sets.html', locals(),
 213         context_instance=RequestContext(request))
 214
 215
 216 @login_required
 217 @require_POST
 218 def new_set(request):
 219     new_set_form = forms.NewSetForm(request.POST)
 220     if new_set_form.is_valid():
 221         new_set = new_set_form.save(request.user)
 222
 223         if request.is_ajax():
 224             return HttpResponse(u'<p>Półka <strong>%s</strong> została utworzona</p>' % new_set)
 225         else:
 226             return HttpResponseRedirect('/')
 227
 228     return render_to_response('catalogue/book_sets.html', locals(),
 229             context_instance=RequestContext(request))
 230
 231
 232 @login_required
 233 @require_POST
 234 def delete_shelf(request, slug):
 235     user_set = get_object_or_404(models.Tag, slug=slug, category='set', user=request.user)
 236     user_set.delete()
 237
 238     if request.is_ajax():
 239         return HttpResponse(u'<p>Półka <strong>%s</strong> została usunięta</p>' % user_set.name)
 240     else:
 241         return HttpResponseRedirect('/')
 242
 243
 244 @login_required
 245 def user_shelves(request):
 246     shelves = models.Tag.objects.filter(category='set', user=request.user)
 247     new_set_form = forms.NewSetForm()
 248     return render_to_response('catalogue/user_shelves.html', locals(),
 249             context_instance=RequestContext(request))
 250