def authors_by_two_letters(request):
'''returns authors arranged by first two letters in their names'''
if 'letters' in request.GET and request.GET['letters']:
letters = unquote(request.GET['letters'])
try:
start = generate_alphabets().index(letters[1].lower())
end = generate_alphabets().index(letters[4].lower()) + 1
my_let = generate_alphabets()[start:end]
request_to_server = Q()
for let in my_let:
request_to_server = request_to_server | \
Q(book__pagelink__startswith="http://lib.ru", \
name__istartswith=letters[0] + let)
except (IndexError, ValueError):
request_to_server = Q(book__pagelink__startswith="http://lib.ru", name__istartswith=letters)
authors = Author.objects.filter(request_to_server).distinct().\
order_by('name')
return render_response(request, 'book/opds/libru/books_by_author.xml',
{'authors': authors})
else:
alphabet_string = generate_alphabets()
request_to_server = Q()
string = ""
for let in alphabet_string:
request_to_server = Q(book__pagelink__startswith="http://lib.ru", name__istartswith=let)
authors_count = Author.objects.filter(request_to_server).\
distinct().count()
if authors_count != 0:
string += let
return render_response(request, 'book/opds/libru/books_by_author.xml',
{'string': string, 'num': 1 })
def simple_search(request, response_type, items_per_page, page, start_index):
""" simple search with query """
tags = Tag.objects.all().order_by("name")
query = request.GET['query']
if not query:
return no_results(request, response_type, query, None, is_simple=True)
books = SEARCH_ENGINE.simple_search(query)
authors = SEARCH_ENGINE.author_search(author=query, max_length=5)
if not books and not authors:
return no_results(request,
response_type,
query,
books.suggestion,
is_simple=True)
total = len(books)
next = None
max_item = items_per_page * page
if (total - 1) / max_item != 0:
next = page + 1
if response_type == "atom":
return render_response(
request,
'book/opds/search_response.xml', {
'books': books[start_index:start_index + items_per_page],
'query': query,
'curr': page,
'items_per_page': items_per_page,
'total': total,
'next': next,
},
context_instance=RequestContext(request))
if response_type == "xhtml":
return render_response(request,
'book/xhtml/search_response.xml', {
'books': books,
'items_per_page': items_per_page,
'query': query,
'tags': tags,
'authors': authors,
'suggestions': books.suggestion
},
context_instance=RequestContext(request))
def search_in_author(request, lang, tag, response_type, items_per_page, page,
start_index, main_title):
''' search only by authors'''
tags = Tag.objects.all().order_by("name")
langs = available_languages()
author = request.GET['author']
if not author:
return no_results(request, response_type, main_title)
main_title['author'] = author
#TODO language in author_search
authors = SEARCH_ENGINE.author_search(author=author,
lang=lang,
tag=tag,
max_length=10)
if not authors:
return no_results(request, response_type, main_title,
authors.suggestion)
total = len(authors)
next = None
max_item = items_per_page * page
if (total - 1) / max_item != 0:
next = page + 1
if response_type == "atom":
return render_response(
request, 'book/opds/authors_search_response.xml', {
'authors': authors[start_index:start_index + items_per_page],
'title': main_title,
'curr': page,
'next': next,
'author': author,
'items_per_page': items_per_page,
'total': total
})
if response_type == "xhtml":
return render_response(request,
'book/xhtml/authors_search_response.xml', {
'authors': authors,
'author': author,
'title': main_title,
'items_per_page': items_per_page,
'tags': tags,
'langs': langs,
'suggestions': authors.suggestion
},
context_instance=RequestContext(request))
def search_in_author(request, lang, tag, items_per_page, page,
start_index, main_title):
''' search only by authors'''
tags = available_tags()
langs = available_languages()
author = request.GET['author']
if not author:
return no_results(request, main_title)
main_title['author'] = author
#TODO language in author_search
authors = SEARCH_ENGINE.author_search(author=author, lang=lang, tag=tag,
max_length=10)
if not authors:
return no_results(request, response_type, main_title, authors.suggestion)
total = len(authors)
next = None
max_item = items_per_page * page
if (total-1)/max_item != 0:
next = page+1
return render_response(request, 'book/opds/libru/authors_search_response.xml',
{'authors': authors[start_index:start_index+items_per_page],
'title': main_title, 'curr': page, 'next':next, 'author': author,
'items_per_page':items_per_page, 'total':total })
def simple_search(request, response_type, items_per_page, page, start_index):
""" simple search with query """
tags = available_tags()
query = request.GET['query']
if not query:
return no_results(request, response_type, query, None, is_simple = True)
books = SEARCH_ENGINE.simple_search(query)
authors = SEARCH_ENGINE.author_search(author=query, max_length=5)
if not books and not authors:
return no_results(request, response_type, query, books.suggestion, is_simple = True)
total = len(books)
next = None
max_item = items_per_page * page
if (total-1)/max_item != 0:
next = page+1
return render_response(request, 'book/opds/libru/search_response.xml',
{'books': books[start_index:start_index+items_per_page],
'query': query, 'curr': page, 'items_per_page': items_per_page,
'total':total, 'next':next, },
context_instance=RequestContext(request))
def no_results(request, main_title, suggestions, is_simple = False):
''' returns 'no result' message'''
tags = Tag.objects.all().order_by("name")
langs = available_languages()
return render_response(request, 'book/opds/libru/no_results.xml',
{'is_simple': is_simple, 'query': main_title,
'suggestions':suggestions, 'tags': tags,
'langs':langs})
def author_request(request, author_id):
"""builds opds esponse for all author's books request"""
try:
author = Author.objects.get(id=author_id)
except ObjectDoesNotExist:
raise Http404
books = author.book_set.filter(pagelink__startswith="http://lib.ru")
return render_response(request, 'book/opds/libru/author.xml',
{'author': author, 'books': books})
def authors_by_one_letter(request):
'''returns authors arranged by first letter in their names'''
letter = unquote(request.GET['letter'])
alphabet_string = generate_alphabets()
string = ""
for let in alphabet_string:
request_to_server = Q(book__pagelink__startswith="http://lib.ru", name__istartswith=letter + let)
auth_count = Author.objects.filter(request_to_server).distinct().count()
if auth_count > 0: # TODO condition
string += let
string = string[0:-1]
if len(string) < 1:
request_to_server = Q(book__pagelink__startswith="http://lib.ru", name__istartswith=letter)
authors = Author.objects.filter(request_to_server).distinct().\
order_by('name')
return render_response(request, 'book/opds/libru/books_by_author.xml',
{'authors': authors})
my_list = []
if letter in views.generate_russian_alphabet():
my_string = letter + u'а'
else:
my_string = letter + 'a'
for let in string:
if my_string != letter + let:
my_string += "-" + letter + let
my_list.append(my_string)
my_string = letter + unichr(ord(let) + 1)
if letter in views.generate_russian_alphabet():
my_string += "-" + letter + u"я"
else:
my_string += "-" + letter + "z"
my_list.append(my_string)
return render_response(request, 'book/opds/libru/books_by_author.xml',
{'string': my_list, 'num': 2, 'letter': letter })
def no_results(request,
response_type,
main_title,
suggestions,
is_simple=False):
''' returns 'no result' message'''
tags = Tag.objects.all().order_by("name")
langs = available_languages()
if response_type == "atom":
return render_response(
request, 'book/opds/no_results.xml', {
'is_simple': is_simple,
'query': main_title,
'suggestions': suggestions,
'tags': tags,
'langs': langs
})
if response_type == "xhtml":
if is_simple:
return render_response(
request, 'book/xhtml/no_results.xml', {
'is_simple': is_simple,
'query': main_title,
'suggestions': suggestions,
'tags': tags,
'langs': langs
})
else:
return render_response(
request, 'book/xhtml/no_results.xml', {
'is_simple': is_simple,
'title': main_title,
'suggestions': suggestions,
'tags': tags,
'langs': langs
})
def server_error(e):
return render_response('500error.html')
def page_not_found(e):
return render_response('404error.html')
def search_request_to_server(request, response_type, is_all):
""" builds opds and xhtml response for search request"""
tags = Tag.objects.all().order_by("name")
langs = available_languages()
request_to_server = Q()
main_title = {}
suggestions = None
page, start_index, items_per_page = 1, 0, 20
title = author = tag = lang = None
books = Book.objects.none()
# initialization
if 'items_per_page' in request.GET and request.GET['items_per_page']:
items_per_page = int(request.GET['items_per_page'])
if 'page' in request.GET and request.GET['page']:
page = int(request.GET['page'])
start_index = items_per_page * (page - 1)
if 'title' in request.GET and request.GET['title']:
title = request.GET['title']
if 'author' in request.GET and request.GET['author']:
author = request.GET['author']
if 'lang' in request.GET and request.GET['lang']:
lang = request.GET['lang']
request_to_server = request_to_server & Q(language__short=lang)
main_title['lang'] = lang
if 'tag' in request.GET and request.GET['tag']:
tag = request.GET['tag']
request_to_server = request_to_server & Q(tag__name__icontains=tag)
main_title['tag'] = tag
# main logic
if 'query' in request.GET and request.GET['query']:
# search in title, author.name, alias, annotation
return simple_search(request, response_type, items_per_page, page,
start_index)
if title:
main_title['tit'] = title
if author:
main_title['author'] = author
books = SEARCH_ENGINE.book_search(title=title,
author=author,
tag=tag,
lang=lang)
suggestions = books.suggestion
elif author:
return search_in_author(request, lang, tag, response_type,
items_per_page, page, start_index, main_title)
else:
books = Book.objects.filter(request_to_server).distinct()
if not books:
return no_results(request, response_type, main_title, suggestions)
if is_all == "yes":
books = Book.objects.all()
total = len(books)
next = None
max_item = items_per_page * page
if (total - 1) / max_item != 0:
next = page + 1
if response_type == "atom":
return render_response(
request, 'book/opds/search_response.xml', {
'books': books[start_index:start_index + items_per_page],
'title': main_title,
'curr': page,
'next': next,
'items_per_page': items_per_page,
'total': total
})
if response_type == "xhtml":
return render_response(request,
'book/xhtml/search_response.xml', {
'books': books,
'title': main_title,
'items_per_page': items_per_page,
'tags': tags,
'langs': langs,
'suggestions': suggestions
},
context_instance=RequestContext(request))
def catalog(request):
"""builds opds response for catalog request"""
return render_response(request, 'book/opds/libru/catalog.xml')
def search_request_to_server(request):
""" builds opds response for search request"""
tags = available_tags()
langs = available_languages()
request_to_server = Q(pagelink__startswith='http://lib.ru')
main_title = {}
suggestions = None
page, start_index, items_per_page = 1, 0, 20
title = author = tag = lang = None
books = Book.objects.none()
# initialization
if 'items_per_page' in request.GET and request.GET['items_per_page']:
items_per_page = int(request.GET['items_per_page'])
if 'page' in request.GET and request.GET['page']:
page = int(request.GET['page'])
start_index = items_per_page * (page - 1)
if 'title' in request.GET and request.GET['title']:
title = request.GET['title']
if 'author' in request.GET and request.GET['author']:
author = request.GET['author']
if 'lang' in request.GET and request.GET['lang']:
lang = request.GET['lang']
request_to_server = request_to_server & Q(language__short=lang)
main_title['lang'] = lang
if 'tag' in request.GET and request.GET['tag']:
tag = request.GET['tag']
request_to_server = request_to_server & Q(tag__name__icontains=tag)
main_title['tag'] = tag
# main logic
if 'query' in request.GET and request.GET['query']:
# search in title, author.name, alias, annotation
return simple_search(request, items_per_page, page,
start_index)
if title:
main_title['tit'] = title
if author:
main_title['author'] = author
books = SEARCH_ENGINE.book_search(title=title, author=author, tag=tag,
lang=lang)
suggestions = books.suggestion
elif author:
return search_in_author(request, lang, tag, items_per_page, page, start_index, main_title)
else:
books = Book.objects.filter(request_to_server).distinct()
if not books:
return no_results(request, main_title, suggestions)
total = len(books)
next = None
max_item = items_per_page * page
if (total-1)/max_item != 0:
next = page+1
return render_response(request, 'book/opds/libru/search_response.xml',
{'books': books[start_index:start_index+items_per_page],
'title': main_title, 'curr': page, 'next':next,
'items_per_page':items_per_page, 'total':total })
def books_by_tags(request):
"""builds opds response for books by tags request"""
tags = available_tags()
languages = available_languages()
return render_response(request, 'book/opds/libru/books_by_tag.xml',
{'tags':tags, 'languages':languages})
def books_by_language(request):
"""builds opds response for books by lang request"""
languages = available_languages()
return render_response(request, 'book/opds/libru/books_by_lang.xml',
{'languages':languages})
