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
  11 from catalogue import models
  12 from catalogue import forms
  13 from catalogue.utils import split_tags
  14
  15
  16 def catalogue_redirect(request, tags=''):
  17     if len(request.GET['q']) > 0:
  18         try:
  19             tag = models.Tag.objects.get(name=request.GET['q'])
  20             if len(tags):
  21                 tags += '/'
  22             tags = tags + tag.slug
  23         except models.Tag.DoesNotExist:
  24             book = get_object_or_404(models.Book, title=request.GET['q'])
  25             return HttpResponseRedirect(book.get_absolute_url())
  26     if len(tags) > 0:
  27         return HttpResponseRedirect(reverse('catalogue.views.tagged_book_list', kwargs=dict(tags=tags)))
  28     else:
  29         return HttpResponseRedirect(reverse('catalogue.views.main_page'))
  30
  31
  32 def tags_starting_with(request):
  33     try:
  34         prefix = request.GET['q']
  35         if len(prefix) < 2:
  36             raise KeyError
  37
  38         books = models.Book.objects.filter(title__icontains=prefix)
  39         tags = models.Tag.objects.filter(name__icontains=prefix)
  40         if request.user.is_authenticated():
  41             tags = tags.filter(~Q(category='set') | Q(user=request.user))
  42         else:
  43             tags = tags.filter(~Q(category='set'))
  44
  45         completions = [book.title for book in books] + [tag.name for tag in tags]
  46
  47         return HttpResponse('\n'.join(completions))
  48
  49     except KeyError:
  50         return HttpResponse('')
  51
  52
  53 def main_page(request):
  54     if 'q' in request.GET:
  55         return catalogue_redirect(request)
  56
  57     if request.user.is_authenticated():
  58         extra_where = '(NOT catalogue_tag.category = "set" OR catalogue_tag.user_id = %d)' % request.user.id
  59     else:
  60         extra_where = 'NOT catalogue_tag.category = "set"'
  61     tags = models.Tag.objects.usage_for_model(models.Book, counts=True, extra={'where': [extra_where]})
  62     categories = split_tags(tags)
  63
  64     form = forms.SearchForm()
  65     return render_to_response('catalogue/main_page.html', locals(),
  66         context_instance=RequestContext(request))
  67
  68
  69 def book_list(request):
  70     if 'q' in request.GET:
  71         return catalogue_redirect(request)
  72
  73     books = models.Book.objects.all()
  74     form = forms.SearchForm()
  75
  76     books_by_first_letter = SortedDict()
  77     for book in books:
  78         books_by_first_letter.setdefault(book.title[0], []).append(book)
  79
  80     return render_to_response('catalogue/book_list.html', locals(),
  81         context_instance=RequestContext(request))
  82
  83
  84 def tagged_book_list(request, tags=''):
  85     if 'q' in request.GET:
  86         return catalogue_redirect(request, tags)
  87
  88     choices_split = tags.split('/')
  89     tags = []
  90     for tag in choices_split:
  91         tag = get_object_or_404(models.Tag, slug=tag)
  92         if tag.category == 'set' and (not request.user.is_authenticated() or request.user != tag.user):
  93             raise Http404
  94         tags.append(tag)
  95
  96     books = models.Book.objects.with_all(tags)
  97
  98     if request.user.is_authenticated():
  99         extra_where = '(NOT catalogue_tag.category = "set" OR catalogue_tag.user_id = %d)' % request.user.id
 100     else:
 101         extra_where = 'NOT catalogue_tag.category = "set"'
 102     related_tags = models.Tag.objects.related_for_model(tags, models.Book, counts=True, extra={'where': [extra_where]})
 103     categories = split_tags(related_tags)
 104
 105     form = forms.SearchForm()
 106
 107     return render_to_response('catalogue/tagged_book_list.html', dict(
 108         tags=tags,
 109         form=form,
 110         books=books,
 111         categories=categories,
 112     ), context_instance=RequestContext(request))
 113
 114
 115 def book_detail(request, slug):
 116     book = get_object_or_404(models.Book, slug=slug)
 117     tags = list(book.tags.filter(~Q(category='set')))
 118     categories = split_tags(tags)
 119     search_form = forms.SearchForm()
 120
 121     return render_to_response('catalogue/book_detail.html', locals(),
 122         context_instance=RequestContext(request))
 123
 124
 125 @login_required
 126 def book_sets(request, slug):
 127     book = get_object_or_404(models.Book, slug=slug)
 128     user_sets = models.Tag.objects.filter(category='set', user=request.user)
 129     book_sets = book.tags.filter(category='set', user=request.user)
 130
 131     if request.method == 'POST':
 132         form = forms.BookSetsForm(book, request.user, request.POST)
 133         if form.is_valid():
 134             book.tags = ([models.Tag.objects.get(pk=id) for id in form.cleaned_data['set_ids']] +
 135                 list(book.tags.filter(~Q(category='set') | ~Q(user=request.user))))
 136             if request.is_ajax():
 137                 return HttpResponse('<p>Zestawy zostały zapisane</p>')
 138             else:
 139                 return HttpResponseRedirect('/')
 140     else:
 141         form = forms.BookSetsForm(book, request.user)
 142         new_set_form = forms.NewSetForm()
 143
 144     return render_to_response('catalogue/book_sets.html', locals(),
 145         context_instance=RequestContext(request))
 146
 147 @login_required
 148 @require_POST
 149 def new_set(request):
 150     new_set_form = forms.NewSetForm(request.POST)
 151     if new_set_form.is_valid():
 152         new_set = new_set_form.save(request.user)
 153         return HttpResponse('<p>Zestaw <strong>%s</strong> został utworzony</p>' % new_set)
 154
 155     return render_to_response('catalogue/book_sets.html', locals(),
 156             context_instance=RequestContext(request))
 157