1 from __future__ import absolute_import
4 from django.db.models import Q, Count
5 from django import template
6 from django.utils.translation import ugettext_lazy as _
7 from django.contrib.auth.models import User
8 from catalogue.models import Chunk
10 register = template.Library()
13 class ChunksList(object):
14 def __init__(self, chunk_qs):
15 #self.chunk_qs = chunk_qs#.annotate(
16 #book_length=Count('book__chunk')).select_related(
17 #'book')#, 'stage__name',
19 self.chunk_qs = chunk_qs.select_related('book__hidden')
21 self.book_qs = chunk_qs.values('book_id')
23 def __getitem__(self, key):
24 if isinstance(key, slice):
25 return self.get_slice(key)
26 elif isinstance(key, int):
27 return self.get_slice(slice(key, key+1))[0]
29 raise TypeError('Unsupported list index. Must be a slice or an int.')
32 return self.book_qs.count()
34 def get_slice(self, slice_):
35 book_ids = [x['book_id'] for x in self.book_qs[slice_]]
36 chunk_qs = self.chunk_qs.filter(book__in=book_ids)
40 for chunk in chunk_qs:
41 if chunk.book != book:
43 chunks_list.append(ChoiceChunks(book, [chunk]))
45 chunks_list[-1].chunks.append(chunk)
49 class ChoiceChunks(object):
51 Associates the given chunks iterable for a book.
56 def __init__(self, book, chunks):
61 def foreign_filter(qs, value, filter_field, model, model_field='slug', unset='-'):
63 return qs.filter(**{filter_field: None})
67 obj = model._default_manager.get(**{model_field: value})
68 except model.DoesNotExist:
71 return qs.filter(**{filter_field: obj})
74 def search_filter(qs, value, filter_fields):
77 q = Q(**{"%s__icontains" % filter_fields[0]: value})
78 for field in filter_fields[1:]:
79 q |= Q(**{"%s__icontains" % field: value})
84 ('publishable', _('publishable'), Q(book___new_publishable=True)),
85 ('changed', _('changed'), Q(_changed=True)),
86 ('published', _('published'), Q(book___published=True)),
87 ('unpublished', _('unpublished'), Q(book___published=False)),
88 ('empty', _('empty'), Q(head=None)),
90 _states_options = [s[:2] for s in _states]
91 _states_dict = dict([(s[0], s[2]) for s in _states])
94 def document_list_filter(request, **kwargs):
96 def arg_or_GET(field):
97 return kwargs.get(field, request.GET.get(field))
100 chunks = Chunk.objects.all()
102 chunks = Chunk.visible_objects.all()
104 chunks = chunks.order_by('book__title', 'book', 'number')
106 if not request.user.is_authenticated():
107 chunks = chunks.filter(book__public=True)
109 state = arg_or_GET('status')
110 if state in _states_dict:
111 chunks = chunks.filter(_states_dict[state])
113 chunks = foreign_filter(chunks, arg_or_GET('user'), 'user', User, 'username')
114 chunks = foreign_filter(chunks, arg_or_GET('stage'), 'stage', Chunk.tag_model, 'slug')
115 chunks = search_filter(chunks, arg_or_GET('title'), ['book__title', 'title'])
119 @register.inclusion_tag('catalogue/book_list/book_list.html', takes_context=True)
120 def book_list(context, user=None):
121 request = context['request']
124 filters = {"user": user}
125 new_context = {"viewed_user": user}
128 new_context = {"users": User.objects.annotate(
129 count=Count('chunk')).filter(count__gt=0).order_by(
130 '-count', 'last_name', 'first_name')}
135 "books": ChunksList(document_list_filter(request, **filters)),
136 "stages": Chunk.tag_model.objects.all(),
137 "states": _states_options,