src/search/forms.py

   1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   3 #
   4 from django.apps import apps
   5 from django.conf import settings
   6 from django.contrib.postgres.search import SearchHeadline, SearchRank, SearchQuery
   7 from django import forms
   8 from django.utils.translation import gettext_lazy as _
   9 from catalogue.constants import LANGUAGES_3TO2
  10 import catalogue.models
  11 import pdcounter.models
  12 import picture.models
  13 from .fields import JQueryAutoCompleteSearchField, InlineRadioWidget
  14 from .utils import UnaccentSearchQuery, UnaccentSearchVector
  15
  16
  17 class SearchForm(forms.Form):
  18     q = JQueryAutoCompleteSearchField(label=_('Search'))
  19     # {'minChars': 2, 'selectFirst': True, 'cacheLength': 50, 'matchContains': "word"})
  20
  21     def __init__(self, source, *args, **kwargs):
  22         kwargs['auto_id'] = False
  23         super(SearchForm, self).__init__(*args, **kwargs)
  24         self.fields['q'].widget.attrs['id'] = 'search'
  25         self.fields['q'].widget.attrs['autocomplete'] = 'off'
  26         self.fields['q'].widget.attrs['data-source'] = source
  27         if 'q' not in self.data:
  28             self.fields['q'].widget.attrs['placeholder'] = _('title, author, epoch, kind, genre, phrase')
  29
  30
  31 class SearchFilters(forms.Form):
  32     q = forms.CharField(
  33         required=False, widget=forms.HiddenInput(),
  34         min_length=2, max_length=256,
  35     )
  36     format = forms.ChoiceField(required=False, choices=[
  37         ('', 'wszystkie'),
  38         ('text', 'tekst'),
  39         ('audio', 'audiobook'),
  40         ('daisy', 'Daisy'),
  41         ('art', 'obraz'),
  42         #('theme', 'motywy'),
  43     ], widget=InlineRadioWidget())
  44     lang = forms.ChoiceField(required=False)
  45     epoch = forms.ChoiceField(required=False)
  46     genre = forms.ChoiceField(required=False)
  47     category = forms.ChoiceField(required=False, choices=[
  48         ('', 'wszystkie'),
  49         ('author', 'autor'),
  50         #('translator', 'tłumacz'),
  51         ('theme', 'motyw'),
  52         ('genre', 'gatunek'),
  53         ('book', 'tytuł'),
  54         ('art', 'obraz'),
  55         ('collection', 'kolekcja'),
  56         ('quote', 'cytat'),
  57     ], widget=InlineRadioWidget())
  58
  59     def __init__(self, *args, **kwargs):
  60         super().__init__(*args, **kwargs)
  61
  62         langs = dict(settings.LANGUAGES)
  63         self.fields['lang'].choices = [('', 'wszystkie')] + [
  64             (
  65                 b,
  66                 langs.get(LANGUAGES_3TO2.get(b, b), b)
  67             )
  68             for b in catalogue.models.Book.objects.values_list(
  69                     'language', flat=True
  70             ).distinct().order_by()
  71         ]
  72         self.fields['epoch'].choices = [('', 'wszystkie')] + [
  73             (b.slug, b.name)
  74             for b in catalogue.models.Tag.objects.filter(category='epoch')
  75         ]
  76         self.fields['genre'].choices = [('', 'wszystkie')] + [
  77             (b.slug, b.name)
  78             for b in catalogue.models.Tag.objects.filter(category='genre')
  79         ]
  80
  81     def get_querysets(self):
  82         qs = {
  83             'author': catalogue.models.Tag.objects.filter(category='author'),
  84             'pdauthor': pdcounter.models.Author.objects.all(),
  85             'theme': catalogue.models.Tag.objects.filter(category='theme'),
  86             'genre': catalogue.models.Tag.objects.filter(category='genre'),
  87             'collection': catalogue.models.Collection.objects.all(),
  88             'book': catalogue.models.Book.objects.all(), #findable
  89             'pdbook': pdcounter.models.BookStub.objects.all(),
  90             'snippet': catalogue.models.Snippet.objects.all(),
  91             'art': picture.models.Picture.objects.all(),
  92             # art pieces
  93         }
  94         if self.cleaned_data['category']:
  95             c = self.cleaned_data['category']
  96             if c != 'author':
  97                 qs['author'] = qs['author'].none()
  98                 qs['pdauthor'] = qs['pdauthor'].none()
  99             if c != 'theme': qs['theme'] = qs['theme'].none()
 100             if c != 'genre': qs['genre'] = qs['genre'].none()
 101             if c != 'collection': qs['collection'] = qs['collection'].none()
 102             if c != 'book':
 103                 qs['book'] = qs['book'].none()
 104                 qs['pdbook'] = qs['pdbook'].none()
 105             if c != 'quote': qs['snippet'] = qs['snippet'].none()
 106             if c != 'art': qs['art'] = qs['art'].none()
 107             qs['art'] = Picture.objects.none()
 108
 109         if self.cleaned_data['format']:
 110             c = self.cleaned_data['format']
 111             qs['author'] = qs['author'].none()
 112             qs['pdauthor'] = qs['pdauthor'].none()
 113             qs['theme'] = qs['theme'].none()
 114             qs['genre'] = qs['genrer'].none()
 115             qs['collection'] = qs['collection'].none()
 116             if c == 'art':
 117                 qs['book'] = qs['book'].none()
 118                 qs['pdbook'] = qs['pdbook'].none()
 119                 qs['snippet'] = qs['snippet'].none()
 120             if c in ('text', 'audio', 'daisy'):
 121                 qs['art'] = qs['art'].none()
 122                 if c == 'audio':
 123                     qs['book'] = qs['book'].filter(media__type='mp3')
 124                     qs['pdbook'] = qs['book'].none()
 125                     qs['snippet'] = qs['snippet'].filter(book__media__type='mp3')
 126                 elif c == 'daisy':
 127                     qs['book'] = qs['book'].filter(media__type='daisy')
 128                     qs['snippet'] = qs['snippet'].filter(book__media__type='daisy')
 129
 130         if self.cleaned_data['lang']:
 131             qs['author'] = qs['author'].none()
 132             qs['pdauthor'] = qs['pdauthor'].none()
 133             qs['theme'] = qs['theme'].none()
 134             qs['genre'] = qs['genre'].none()
 135             qs['art'] = qs['art'].none()
 136             qs['collection'] = qs['collection'].none()
 137             qs['book'] = qs['book'].filter(language=self.cleaned_data['lang'])
 138             qs['pdbook'] = qs['pdbook'].none()
 139             qs['snippet'] = qs['snippet'].filter(book__language=self.cleaned_data['lang'])
 140
 141         for tag_cat in ('epoch', 'genre'):
 142             c = self.cleaned_data[tag_cat]
 143             if c:
 144                 # FIXME nonexistent
 145                 t = catalogue.models.Tag.objects.get(category=tag_cat, slug=c)
 146                 qs['author'] = qs['author'].none()
 147                 qs['pdauthor'] = qs['pdauthor'].none()
 148                 qs['theme'] = qs['theme'].none()
 149                 qs['genre'] = qs['genre'].none()
 150                 qs['collection'] = qs['collection'].none()
 151                 qs['book'] = qs['book'].filter(tag_relations__tag=t)
 152                 qs['pdbook'] = qs['pdbook'].none()
 153                 qs['snippet'] = qs['snippet'].filter(book__tag_relations__tag=t)
 154                 qs['art'] = qs['art'].filter(tag_relations__tag=t)
 155
 156         return qs
 157
 158     def results(self):
 159         qs = self.get_querysets()
 160         query = self.cleaned_data['q']
 161         squery = UnaccentSearchQuery(query, config='polish')
 162         query = SearchQuery(query, config='polish')
 163         books = qs['book'].annotate(
 164             search_vector=UnaccentSearchVector('title')
 165         ).filter(search_vector=squery)
 166         books = books.exclude(ancestor__in=books)
 167
 168         snippets = qs['snippet'].annotate(
 169                     rank=SearchRank('search_vector', squery)
 170                 ).filter(rank__gt=0).order_by('-rank').annotate(
 171                     headline=SearchHeadline(
 172                         'text',
 173                         query,
 174                         config='polish',
 175                         start_sel='<strong>',
 176                         stop_sel='</strong>',
 177                         highlight_all=True
 178                     )
 179                 )[:100]
 180         snippets_by_book = {}
 181         for snippet in snippets:
 182             snippet_list = snippets_by_book.setdefault(snippet.book, [])
 183             if len(snippet_list) < 3:
 184                 snippet_list.append(snippet)
 185
 186         return {
 187             'author': qs['author'].annotate(
 188                 search_vector=UnaccentSearchVector('name_pl')
 189             ).filter(search_vector=squery),
 190             'theme': qs['theme'].annotate(
 191                 search_vector=UnaccentSearchVector('name_pl')
 192             ).filter(search_vector=squery),
 193             'genre': qs['genre'].annotate(
 194                 search_vector=UnaccentSearchVector('name_pl')
 195             ).filter(search_vector=squery),
 196             'collection': qs['collection'].annotate(
 197                 search_vector=UnaccentSearchVector('title')
 198             ).filter(search_vector=squery),
 199             'book': books[:100],
 200             'art': qs['art'].annotate(
 201                 search_vector=UnaccentSearchVector('title')
 202             ).filter(search_vector=squery)[:100],
 203             'snippet': snippets_by_book,
 204             'pdauthor': pdcounter.models.Author.search(squery, qs=qs['pdauthor']),
 205             'pdbook': pdcounter.models.BookStub.search(squery, qs=qs['pdbook']),
 206         }
 207