from datetime import datetime, timedelta
import json
+from urlparse import urljoin
from django.conf import settings
from django.contrib.sites.models import Site
+from django.core.cache import get_cache
from django.core.urlresolvers import reverse
from piston.handler import AnonymousBaseHandler, BaseHandler
from piston.utils import rc
for k, v in category_singular.items():
category_plural[v] = k
+book_tag_categories = ['author', 'epoch', 'kind', 'genre']
+
+
def read_tags(tags, allowed):
""" Reads a path of filtering tags.
""" Responsible for representing media in Books. """
model = BookMedia
- fields = ['name', 'type', 'url']
+ fields = ['name', 'type', 'url', 'artist', 'director']
@classmethod
def url(cls, media):
return MEDIA_BASE + media.file.url
+ @classmethod
+ def artist(cls, media):
+ return media.extra_info.get('artist_name', '')
+
+ @classmethod
+ def director(cls, media):
+ return media.extra_info.get('director_name', '')
+
+
+
+class BookDetails(object):
+ """Custom fields used for representing Books."""
+
+ @classmethod
+ def author(cls, book):
+ return ",".join(t[0] for t in book.related_info()['tags']['author'])
+
+ @classmethod
+ def href(cls, book):
+ """ Returns an URI for a Book in the API. """
+ return API_BASE + reverse("api_book", args=[book.slug])
+
+ @classmethod
+ def url(cls, book):
+ """ Returns Book's URL on the site. """
+
+ return WL_BASE + book.get_absolute_url()
+
+ @classmethod
+ def children(cls, book):
+ """ Returns all children for a book. """
+
+ return book.children.all()
+
+ @classmethod
+ def media(cls, book):
+ """ Returns all media for a book. """
+ return book.media.all()
+
+ @classmethod
+ def cover(cls, book):
+ return MEDIA_BASE + book.cover.url if book.cover else ''
-class BookDetailHandler(BaseHandler):
- """ Main handler for Book objects.
- Responsible for lists of Book objects
- and fields used for representing Books.
+class BookDetailHandler(BaseHandler, BookDetails):
+ """ Main handler for Book objects.
+
+ Responsible for single Book details.
"""
allowed_methods = ['GET']
- fields = ['title', 'parent'] + Book.formats + [
- 'media', 'url'] + category_singular.keys()
+ fields = ['title', 'parent', 'children'] + Book.formats + [
+ 'media', 'url', 'cover'] + [
+ category_plural[c] for c in book_tag_categories]
@piwik_track
- def read(self, request, slug):
+ def read(self, request, book):
""" Returns details of a book, identified by a slug and lang. """
try:
- return Book.objects.get(slug=slug)
+ return Book.objects.get(slug=book)
except Book.DoesNotExist:
return rc.NOT_FOUND
-class AnonymousBooksHandler(AnonymousBaseHandler):
+class AnonymousBooksHandler(AnonymousBaseHandler, BookDetails):
""" Main handler for Book objects.
- Responsible for lists of Book objects
- and fields used for representing Books.
-
+ Responsible for lists of Book objects.
"""
allowed_methods = ('GET',)
model = Book
- fields = ['href', 'title']
-
- categories = set(['author', 'epoch', 'kind', 'genre'])
-
- @classmethod
- def href(cls, book):
- """ Returns an URI for a Book in the API. """
- return API_BASE + reverse("api_book", args=[book.slug])
-
- @classmethod
- def url(cls, book):
- """ Returns Book's URL on the site. """
-
- return WL_BASE + book.get_absolute_url()
+ fields = ['author', 'href', 'title', 'url', 'cover']
@piwik_track
- def read(self, request, tags, top_level=False):
+ def read(self, request, tags, top_level=False,
+ audiobooks=False, daisy=False):
""" Lists all books with given tags.
:param tags: filtering tags; should be a path of categories
it's children are aren't. By default all books matching the tags
are returned.
"""
- tags = read_tags(tags, allowed=self.categories)
+ try:
+ tags = read_tags(tags, allowed=book_tag_categories)
+ except ValueError:
+ return rc.NOT_FOUND
+
if tags:
if top_level:
books = Book.tagged_top_level(tags)
books = Book.tagged.with_all(tags)
else:
books = Book.objects.all()
+
+ if top_level:
+ books = books.filter(parent=None)
+ if audiobooks:
+ books = books.filter(media__type='mp3')
+ if daisy:
+ books = books.filter(media__type='daisy')
if books.exists():
return books
else:
return rc.NOT_FOUND
- def create(self, request, tags, top_level=False):
- return 'aaa'
-
- @classmethod
- def media(self, book):
- """ Returns all media for a book. """
-
- return book.media.all()
+ def create(self, request, *args, **kwargs):
+ return rc.FORBIDDEN
-class BooksHandler(BaseHandler):
+class BooksHandler(BookDetailHandler):
+ allowed_methods = ('GET', 'POST')
model = Book
- fields = ('slug', 'title')
+ fields = ['author', 'href', 'title', 'url']
anonymous = AnonymousBooksHandler
- def create(self, request, tags, top_level=False):
+ def create(self, request, *args, **kwargs):
if not request.user.has_perm('catalogue.add_book'):
return rc.FORBIDDEN
else:
return rc.NOT_FOUND
+
# add categorized tags fields for Book
def _tags_getter(category):
@classmethod
return book.tags.filter(category=category)
return get_tags
for plural, singular in category_singular.items():
- setattr(BooksHandler, plural, _tags_getter(singular))
+ setattr(BookDetails, plural, _tags_getter(singular))
# add fields for files in Book
def _file_getter(format):
return ''
return get_file
for format in Book.formats:
- setattr(BooksHandler, format, _file_getter(format))
+ setattr(BookDetails, format, _file_getter(format))
+
+class TagDetails(object):
+ """Custom Tag fields."""
-class TagDetailHandler(BaseHandler):
+ @classmethod
+ def href(cls, tag):
+ """ Returns URI in the API for the tag. """
+
+ return API_BASE + reverse("api_tag", args=[category_plural[tag.category], tag.slug])
+
+ @classmethod
+ def url(cls, tag):
+ """ Returns URL on the site. """
+
+ return WL_BASE + tag.get_absolute_url()
+
+
+class TagDetailHandler(BaseHandler, TagDetails):
""" Responsible for details of a single Tag object. """
- fields = ['name', 'sort_key', 'description']
+ fields = ['name', 'url', 'sort_key', 'description']
@piwik_track
def read(self, request, category, slug):
return rc.NOT_FOUND
-class TagsHandler(BaseHandler):
+class TagsHandler(BaseHandler, TagDetails):
""" Main handler for Tag objects.
Responsible for lists of Tag objects
"""
allowed_methods = ('GET',)
model = Tag
- fields = ['name', 'href']
+ fields = ['name', 'href', 'url']
@piwik_track
def read(self, request, category):
return rc.NOT_FOUND
+class FragmentDetails(object):
+ """Custom Fragment fields."""
+
@classmethod
- def href(cls, tag):
- """ Returns URI in the API for the tag. """
+ def href(cls, fragment):
+ """ Returns URI in the API for the fragment. """
- return API_BASE + reverse("api_tag", args=[category_plural[tag.category], tag.slug])
+ return API_BASE + reverse("api_fragment",
+ args=[fragment.book.slug, fragment.anchor])
+
+ @classmethod
+ def url(cls, fragment):
+ """ Returns URL on the site for the fragment. """
+ return WL_BASE + fragment.get_absolute_url()
-class FragmentDetailHandler(BaseHandler):
+ @classmethod
+ def themes(cls, fragment):
+ """ Returns a list of theme tags for the fragment. """
+
+ return fragment.tags.filter(category='theme')
+
+
+class FragmentDetailHandler(BaseHandler, FragmentDetails):
fields = ['book', 'anchor', 'text', 'url', 'themes']
@piwik_track
- def read(self, request, slug, anchor):
+ def read(self, request, book, anchor):
""" Returns details of a fragment, identified by book slug and anchor. """
try:
- return Fragment.objects.get(book__slug=slug, anchor=anchor)
+ return Fragment.objects.get(book__slug=book, anchor=anchor)
except Fragment.DoesNotExist:
return rc.NOT_FOUND
-class FragmentsHandler(BaseHandler):
+class FragmentsHandler(BaseHandler, FragmentDetails):
""" Main handler for Fragments.
Responsible for lists of Fragment objects
"""
model = Fragment
- fields = ['book', 'anchor', 'href']
+ fields = ['book', 'url', 'anchor', 'href']
allowed_methods = ('GET',)
categories = set(['author', 'epoch', 'kind', 'genre', 'book', 'theme'])
books/book-slug/authors/an-author/themes/a-theme/
"""
- tags = read_tags(tags, allowed=self.categories)
+ try:
+ tags = read_tags(tags, allowed=self.categories)
+ except ValueError:
+ return rc.NOT_FOUND
fragments = Fragment.tagged.with_all(tags).select_related('book')
if fragments.exists():
return fragments
else:
return rc.NOT_FOUND
- @classmethod
- def href(cls, fragment):
- """ Returns URI in the API for the fragment. """
-
- return API_BASE + reverse("api_fragment",
- args=[fragment.book.slug, fragment.anchor])
-
- @classmethod
- def url(cls, fragment):
- """ Returns URL on the site for the fragment. """
-
- return WL_BASE + fragment.get_absolute_url()
-
- @classmethod
- def themes(cls, fragment):
- """ Returns a list of theme tags for the fragment. """
-
- return fragment.tags.filter(category='theme')
-
-
# Changes handlers
else:
fields = all_fields
- extra_info = book.get_extra_info_value()
+ extra_info = book.extra_info
obj = {}
for field in fields:
elif field in BookMedia.formats:
media = []
- for m in book.media.filter(type=field):
+ for m in book.media.filter(type=field).iterator():
media.append({
'url': m.file.url,
'size': m.file.size,
obj[field] = book.get_absolute_url()
elif field == 'tags':
- obj[field] = [t.id for t in book.tags.exclude(category__in=('book', 'set'))]
+ obj[field] = [t.id for t in book.tags.exclude(category__in=('book', 'set')).iterator()]
elif field == 'author':
- obj[field] = ", ".join(t.name for t in book.tags.filter(category='author'))
+ obj[field] = ", ".join(t.name for t in book.tags.filter(category='author').iterator())
elif field == 'parent':
obj[field] = book.parent_id
last_change = since
for book in Book.objects.filter(changed_at__gte=since,
- changed_at__lt=until):
+ changed_at__lt=until).iterator():
book_d = cls.book_dict(book, fields)
updated.append(book_d)
if updated:
for book in Deleted.objects.filter(content_type=Book,
deleted_at__gte=since,
deleted_at__lt=until,
- created_at__lt=since):
+ created_at__lt=since).iterator():
deleted.append(book.id)
if deleted:
changes['deleted'] = deleted
obj[field] = tag.get_absolute_url()
elif field == 'books':
- obj[field] = [b.id for b in Book.tagged_top_level([tag])]
+ obj[field] = [b.id for b in Book.tagged_top_level([tag]).iterator()]
elif field == 'sort_key':
obj[field] = tag.sort_key
for tag in Tag.objects.filter(category__in=categories,
changed_at__gte=since,
- changed_at__lt=until):
+ changed_at__lt=until).iterator():
# only serve non-empty tags
if tag.book_count:
tag_d = cls.tag_dict(tag, fields)
content_type=Tag,
deleted_at__gte=since,
deleted_at__lt=until,
- created_at__lt=since):
+ created_at__lt=since).iterator():
deleted.append(tag.id)
if deleted:
changes['deleted'] = deleted
def changes(cls, request=None, since=0, until=None, book_fields=None,
tag_fields=None, tag_categories=None):
until = cls.until(until)
+ since = int(since)
+
+ if not since:
+ cache = get_cache('api')
+ key = hash((book_fields, tag_fields, tag_categories,
+ tuple(sorted(request.GET.items()))
+ ))
+ value = cache.get(key)
+ if value is not None:
+ return value
changes = {
'time_checked': timestamp(until)
if field == 'time_checked':
continue
changes.setdefault(field, {})[model] = changes_by_type[model][field]
+
+ if not since:
+ cache.set(key, changes)
+
return changes
fnp / wolnelektury.git / blobdiff