361 lines
13 KiB
Python
361 lines
13 KiB
Python
from django.apps import apps
|
|
from django.db.models import Q
|
|
from regluit.core import cc
|
|
|
|
class BaseFacet(object):
|
|
facet_name = 'all'
|
|
model_filters ={}
|
|
|
|
def __init__(self, outer_facet):
|
|
self.outer_facet = outer_facet if outer_facet else None
|
|
self.model = apps.get_model('core', 'Work')
|
|
|
|
def _get_query_set(self):
|
|
if self.outer_facet:
|
|
return self.outer_facet.get_query_set()
|
|
else:
|
|
return self.model.objects.filter(is_free=True)
|
|
|
|
def _filter_model(self, model, query_set):
|
|
if self.outer_facet:
|
|
return self.outer_facet.filter_model(model, query_set)
|
|
else:
|
|
return query_set
|
|
|
|
def __unicode__(self):
|
|
if self.facet_name == 'all':
|
|
return 'Free eBooks'
|
|
return unicode(self.facet_name)
|
|
|
|
@property
|
|
def title(self):
|
|
return self.__unicode__()
|
|
|
|
@property
|
|
def label(self):
|
|
return self.__unicode__()
|
|
|
|
def get_query_set(self):
|
|
return self._get_query_set()
|
|
|
|
def filter_model(self, model, query_set):
|
|
model_filter = self.model_filters.get(model,None)
|
|
if model_filter:
|
|
return model_filter( self._filter_model(model, query_set))
|
|
else:
|
|
return self._filter_model( model, query_set)
|
|
|
|
def get_facet_path(self):
|
|
if self.outer_facet:
|
|
return self.outer_facet.get_facet_path() + self.facet_name + '/'
|
|
else:
|
|
return self.facet_name + '/'
|
|
|
|
def facets(self):
|
|
facets=[self]
|
|
if self.outer_facet:
|
|
facets= self.outer_facet.facets() + facets
|
|
return facets
|
|
|
|
def context(self):
|
|
return {}
|
|
|
|
def template(self):
|
|
return 'facets/default.html'
|
|
|
|
_stash_others = None
|
|
def get_other_groups(self):
|
|
if self._stash_others != None:
|
|
return self._stash_others
|
|
others = []
|
|
used = self.facets()
|
|
for group in facet_groups:
|
|
in_use = False
|
|
for facet in used:
|
|
if group.has_facet(facet.facet_name) :
|
|
in_use = True
|
|
break
|
|
if not in_use:
|
|
others.append(group)
|
|
self._stash_others=others
|
|
return others
|
|
|
|
@property
|
|
def description(self):
|
|
return self.__unicode__()
|
|
|
|
class FacetGroup(object):
|
|
# a FacetGroup should implement title, facets, has_facet(self, facet_name) and get_facet_class(self, facet_name)
|
|
|
|
def has_facet(self, facet_name):
|
|
return facet_name in self.facets
|
|
|
|
def get_facets(self):
|
|
for facet_name in self.facets:
|
|
yield self.get_facet_class(facet_name)(None)
|
|
|
|
class NamedFacet(BaseFacet):
|
|
# set_name() must be defined in classes implementing NamedFacet
|
|
def __init__(self, outer_facet):
|
|
super(NamedFacet, self).__init__( outer_facet )
|
|
self.set_name()
|
|
|
|
class FormatFacetGroup(FacetGroup):
|
|
|
|
def __init__(self):
|
|
super(FacetGroup,self).__init__()
|
|
self.title = 'Format'
|
|
self.facets = ['pdf', 'epub', 'mobi']
|
|
self.label = '{} is ...'.format(self.title)
|
|
|
|
def get_facet_class(self, facet_name):
|
|
class FormatFacet(NamedFacet):
|
|
def set_name(self):
|
|
self.facet_name=facet_name
|
|
def format_filter(query_set):
|
|
return query_set.filter(format=facet_name)
|
|
def edition_format_filter(query_set):
|
|
return query_set.filter(ebooks__format=facet_name)
|
|
model_filters = {"Ebook": format_filter, "Edition": edition_format_filter}
|
|
def get_query_set(self):
|
|
return self._get_query_set().filter(editions__ebooks__format=self.facet_name)
|
|
def template(self):
|
|
return 'facets/format.html'
|
|
@property
|
|
def title(self):
|
|
return "eBooks available in format: " + self.facet_name
|
|
@property
|
|
def description(self):
|
|
return "These eBooks available in %s format." % self.facet_name
|
|
return FormatFacet
|
|
|
|
idtitles = {'doab': 'indexed in DOAB', 'gtbg':'available in Project Gutenberg'}
|
|
idlabels = {'doab': 'DOAB', 'gtbg':'Project Gutenberg'}
|
|
class IdFacetGroup(FacetGroup):
|
|
def __init__(self):
|
|
super(FacetGroup,self).__init__()
|
|
self.title = 'Collection'
|
|
self.facets = idtitles.keys()
|
|
self.label = 'Included in ...'
|
|
|
|
def get_facet_class(self, facet_name):
|
|
class IdFacet(NamedFacet):
|
|
def set_name(self):
|
|
self.facet_name=facet_name
|
|
def id_filter(query_set):
|
|
return query_set.filter(identifiers__type=facet_name)
|
|
model_filters = {}
|
|
def get_query_set(self):
|
|
return self._get_query_set().filter(identifiers__type=self.facet_name)
|
|
def template(self):
|
|
return 'facets/id.html'
|
|
@property
|
|
def label(self):
|
|
return idlabels[self.facet_name]
|
|
@property
|
|
def title(self):
|
|
return idtitles[self.facet_name]
|
|
@property
|
|
def description(self):
|
|
return "These eBooks are {}.".format(idtitles[self.facet_name])
|
|
return IdFacet
|
|
|
|
|
|
class LicenseFacetGroup(FacetGroup):
|
|
def __init__(self):
|
|
super(FacetGroup,self).__init__()
|
|
self.title = 'License'
|
|
self.licenses = cc.LICENSE_LIST_ALL
|
|
self.facets = cc.FACET_LIST
|
|
self.label = '{} is ...'.format(self.title)
|
|
|
|
|
|
def get_facet_class(self, facet_name):
|
|
class LicenseFacet(NamedFacet):
|
|
def set_name(self):
|
|
self.facet_name=facet_name
|
|
self.license = cc.ccinfo(facet_name)
|
|
def license_filter(query_set):
|
|
return query_set.filter(rights=cc.ccinfo(facet_name))
|
|
def edition_license_filter(query_set):
|
|
return query_set.filter(ebooks__rights=cc.ccinfo(facet_name))
|
|
model_filters = {"Ebook": license_filter, "Edition": edition_license_filter}
|
|
def get_query_set(self):
|
|
return self._get_query_set().filter(editions__ebooks__rights=self.license.license)
|
|
def template(self):
|
|
return 'facets/license.html'
|
|
def context(self):
|
|
return {
|
|
'license': self.license,
|
|
}
|
|
def label(self):
|
|
return self.license.__str__()
|
|
@property
|
|
def title(self):
|
|
return "license: " + self.license.title
|
|
@property
|
|
def description(self):
|
|
return "These eBooks are available under the %s license." % self.facet_name
|
|
return LicenseFacet
|
|
|
|
TOPKW = ["Fiction", "Nonfiction", "Literature", "History", "Classic Literature",
|
|
"Children's literature, English", "History and criticism", "Science", "Juvenile fiction",
|
|
"Sociology", "Software", "Science Fiction"]
|
|
|
|
class KeywordFacetGroup(FacetGroup):
|
|
|
|
def __init__(self):
|
|
super(FacetGroup,self).__init__()
|
|
self.title = 'Keyword'
|
|
# make facets in TOPKW available for display
|
|
self.facets = [('kw.%s' % kw) for kw in TOPKW]
|
|
self.label = '{} is ...'.format(self.title)
|
|
|
|
def has_facet(self, facet_name):
|
|
|
|
# recognize any facet_name that starts with "kw." as a valid facet name
|
|
return facet_name.startswith('kw.')
|
|
|
|
def get_facet_class(self, facet_name):
|
|
class KeywordFacet(NamedFacet):
|
|
def set_name(self):
|
|
self.facet_name=facet_name
|
|
# facet_names of the form 'kw.SUBJECT' and SUBJECT is therefore the 4th character on
|
|
self.keyword=self.facet_name[3:]
|
|
def get_query_set(self):
|
|
return self._get_query_set().filter(subjects__name=self.keyword)
|
|
def template(self):
|
|
return 'facets/keyword.html'
|
|
@property
|
|
def title(self):
|
|
return self.keyword
|
|
@property
|
|
def label(self):
|
|
return self.keyword
|
|
@property
|
|
def description(self):
|
|
return "%s eBooks" % self.keyword
|
|
return KeywordFacet
|
|
|
|
class SearchFacetGroup(FacetGroup):
|
|
|
|
def __init__(self):
|
|
super(FacetGroup,self).__init__()
|
|
self.title = 'Search Term'
|
|
# make facets in TOPKW available for display
|
|
self.facets = []
|
|
self.label = '{} is ...'.format(self.title)
|
|
|
|
def has_facet(self, facet_name):
|
|
|
|
# recognize any facet_name that starts with "s." as a valid facet name
|
|
return facet_name.startswith('s.')
|
|
|
|
def get_facet_class(self, facet_name):
|
|
class KeywordFacet(NamedFacet):
|
|
def set_name(self):
|
|
self.facet_name=facet_name
|
|
# facet_names of the form 's.SUBJECT' and SUBJECT is therefore the 3rd character on
|
|
self.term=self.facet_name[2:]
|
|
def get_query_set(self):
|
|
return self._get_query_set().filter(
|
|
Q(title__icontains=self.term) |
|
|
Q(editions__authors__name__icontains=self.term) |
|
|
Q(subjects__name__iexact=self.term)
|
|
)
|
|
|
|
def template(self):
|
|
return 'facets/search.html'
|
|
@property
|
|
def title(self):
|
|
return self.term
|
|
@property
|
|
def label(self):
|
|
return self.term
|
|
@property
|
|
def description(self):
|
|
return "eBooks for {}".format(self.term)
|
|
return KeywordFacet
|
|
|
|
class PublisherFacetGroup(FacetGroup):
|
|
|
|
def __init__(self):
|
|
super(FacetGroup,self).__init__()
|
|
self.title = 'Publisher'
|
|
# don't display facets
|
|
self.facets = []
|
|
self.label = 'Published by ...'
|
|
|
|
def has_facet(self, facet_name):
|
|
|
|
# recognize any facet_name that starts with "pub." as a valid facet name
|
|
return facet_name.startswith('pub.')
|
|
|
|
def get_facet_class(self, facet_name):
|
|
class PublisherFacet(NamedFacet):
|
|
def set_name(self):
|
|
self.facet_name=facet_name
|
|
# facet_names of the form 'pub.PUB_ID' and PUB_ID is therefore the 5th character on
|
|
self.pub_id=self.facet_name[4:]
|
|
pubmodel = apps.get_model('core', 'Publisher')
|
|
try:
|
|
self.publisher = pubmodel.objects.get(id=self.pub_id)
|
|
except pubmodel.DoesNotExist:
|
|
self.publisher = None
|
|
except ValueError: # pub_id is not a number
|
|
self.publisher = None
|
|
def pub_filter(query_set):
|
|
return query_set.filter(edition__publisher_name__publisher__id=facet_name[4:])
|
|
def edition_pub_filter(query_set):
|
|
return query_set.filter(publisher_name__publisher__id=facet_name[4:])
|
|
model_filters = {"Ebook": pub_filter, "Edition": edition_pub_filter }
|
|
def get_query_set(self):
|
|
return self._get_query_set().filter(editions__publisher_name__publisher=self.publisher)
|
|
def template(self):
|
|
return 'facets/publisher.html'
|
|
@property
|
|
def title(self):
|
|
return self.publisher.name.name if self.publisher else ""
|
|
@property
|
|
def label(self):
|
|
return self.publisher.name.name if self.publisher else ""
|
|
@property
|
|
def description(self):
|
|
return "eBooks published by %s" % self.title
|
|
return PublisherFacet
|
|
|
|
# order of groups in facet_groups determines order of display on /free/
|
|
facet_groups = [KeywordFacetGroup(), FormatFacetGroup(), LicenseFacetGroup(), PublisherFacetGroup(), IdFacetGroup(), SearchFacetGroup()]
|
|
|
|
def get_facet(facet_name):
|
|
for facet_group in facet_groups:
|
|
if facet_group.has_facet(facet_name):
|
|
return facet_group.get_facet_class(facet_name)
|
|
return BaseFacet
|
|
|
|
def get_all_facets(group='all'):
|
|
facets=[]
|
|
for facet_group in facet_groups:
|
|
if group == 'all' or facet_group.title == group:
|
|
facets = facets + facet_group.facets
|
|
return facets
|
|
|
|
def get_facet_object(facet_path):
|
|
facets = facet_path.replace('//','/').strip('/').split('/')
|
|
facet_object = None
|
|
for facet in facets:
|
|
facet_object = get_facet(facet)(facet_object)
|
|
return facet_object
|
|
|
|
order_by_keys = {
|
|
'newest':['-featured', '-created'],
|
|
'oldest':['created'],
|
|
'featured':['-featured', '-num_wishes'],
|
|
'popular':['-num_wishes'],
|
|
'title':['title'],
|
|
'none':[], #no ordering
|
|
}
|
|
|
|
def get_order_by(order_by_key):
|
|
# return the args to use as arguments for order_by
|
|
return order_by_keys.get(order_by_key,'') |