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 newtagging.views import tagged_object_list
  17 from catalogue import models
  18 from catalogue import forms
  19 from catalogue.utils import split_tags
  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         print "%r, %r" % (query, tags)
  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_book_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         extra_where = '(NOT catalogue_tag.category = "set" OR catalogue_tag.user_id = %d)' % request.user.id
  76     else:
  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     categories = split_tags(tags)
  80
  81     form = forms.SearchForm()
  82     return render_to_response('catalogue/main_page.html', locals(),
  83         context_instance=RequestContext(request))
  84
  85
  86 def book_list(request):
  87     books = models.Book.objects.all()
  88     form = forms.SearchForm()
  89
  90     books_by_first_letter = SortedDict()
  91     for book in books:
  92         books_by_first_letter.setdefault(book.title[0], []).append(book)
  93
  94     return render_to_response('catalogue/book_list.html', locals(),
  95         context_instance=RequestContext(request))
  96
  97
  98 def tagged_book_list(request, tags=''):
  99     try:
 100         tags = models.Tag.get_tag_list(tags)
 101     except models.Tag.DoesNotExist:
 102         raise Http404
 103
 104     if request.user.is_authenticated():
 105         extra_where = '(NOT catalogue_tag.category = "set" OR catalogue_tag.user_id = %d)' % request.user.id
 106     else:
 107         extra_where = 'NOT catalogue_tag.category = "set"'
 108     related_tags = models.Tag.objects.related_for_model(tags, models.Book, counts=True, extra={'where': [extra_where]})
 109     categories = split_tags(related_tags)
 110
 111     return tagged_object_list(
 112         request,
 113         tag_model=models.Tag,
 114         queryset_or_model=models.Book,
 115         tags=tags,
 116         template_name='catalogue/tagged_book_list.html',
 117         extra_context = {'categories': categories },
 118     )
 119
 120
 121 def book_detail(request, slug):
 122     book = get_object_or_404(models.Book, slug=slug)
 123     tags = list(book.tags.filter(~Q(category='set')))
 124     categories = split_tags(tags)
 125
 126     return render_to_response('catalogue/book_detail.html', locals(),
 127         context_instance=RequestContext(request))
 128
 129
 130 def logout_then_redirect(request):
 131     auth.logout(request)
 132     return HttpResponseRedirect(request.GET.get('next', '/'))
 133
 134
 135 @require_POST
 136 def register(request):
 137     registration_form = UserCreationForm(request.POST, prefix='registration')
 138     if registration_form.is_valid():
 139         user = registration_form.save()
 140         user = auth.authenticate(
 141             username=registration_form.cleaned_data['username'],
 142             password=registration_form.cleaned_data['password1']
 143         )
 144         auth.login(request, user)
 145         response_data = {'success': True, 'errors': {}}
 146     else:
 147         response_data = {'success': False, 'errors': registration_form.errors}
 148     return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
 149
 150
 151 @require_POST
 152 def login(request):
 153     form = AuthenticationForm(data=request.POST, prefix='login')
 154     if form.is_valid():
 155         auth.login(request, form.get_user())
 156         response_data = {'success': True, 'errors': {}}
 157     else:
 158         response_data = {'success': False, 'errors': form.errors}
 159     return HttpResponse(LazyEncoder(ensure_ascii=False).encode(response_data))
 160
 161
 162 @login_required
 163 def book_sets(request, slug):
 164     book = get_object_or_404(models.Book, slug=slug)
 165     user_sets = models.Tag.objects.filter(category='set', user=request.user)
 166     book_sets = book.tags.filter(category='set', user=request.user)
 167
 168     if request.method == 'POST':
 169         form = forms.BookSetsForm(book, request.user, request.POST)
 170         if form.is_valid():
 171             book.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
 172                 list(book.tags.filter(~Q(category='set') | ~Q(user=request.user))))
 173             if request.is_ajax():
 174                 return HttpResponse('<p>Zestawy zostały zapisane</p>')
 175             else:
 176                 return HttpResponseRedirect('/')
 177     else:
 178         form = forms.BookSetsForm(book, request.user)
 179         new_set_form = forms.NewSetForm()
 180
 181     return render_to_response('catalogue/book_sets.html', locals(),
 182         context_instance=RequestContext(request))
 183
 184
 185 @login_required
 186 @require_POST
 187 def new_set(request):
 188     new_set_form = forms.NewSetForm(request.POST)
 189     if new_set_form.is_valid():
 190         new_set = new_set_form.save(request.user)
 191         return HttpResponse('<p>Zestaw <strong>%s</strong> został utworzony</p>' % new_set)
 192
 193     return render_to_response('catalogue/book_sets.html', locals(),
 194             context_instance=RequestContext(request))
 195