def post(self):
""" Handling requests for editing data. """
email = auth.get_email_from_cookies(self.request.cookies)
self.user = auth.user.User.get_by_email(email)
if not self.user:
self.redirect('/login')
return
self.isbn = self.request.path.split('/book/')[1]
try:
utils.validate_isbn(self.isbn)
except Exception:
msg = "Invalid ISBN: " + self.isbn
params = {'msg': msg}
self.redirect('/error?' + urllib.urlencode(params))
return
if not self.user.is_douban_connected():
self.redirect('/auth/douban')
return
edit_type = self.request.get('type')
# the booklists this book was previously in
from_lists = [bl for bl in BookList.get_all_booklists(self.user) if self.isbn in bl.isbns()]
if edit_type == 'booklist':
self._edit_booklist(from_lists)
self._finish_editing()
return
self.edited = False
if edit_type == 'rating':
self._edit_rating()
elif edit_type == 'comment':
self._edit_comment()
elif edit_type == 'tags':
self._edit_tags()
elif edit_type == 'tongji':
self._edit_tongji()
if self.edited:
if from_lists:
# already in some lists, now edited, sync to douban, edit
self._sync_edit("PUT")
else:
# previously not in any list, now edited, add it to Done List
done_list = BookList.get_or_create(self.user, books.booklist.LIST_DONE)
done_list.add_isbn(self.isbn, front=True)
# sync to douban, add
self._sync_edit("POST")
self._finish_editing()
def _fetch_parse(self, user, list_type=None):
""" It may cause problems to fetch and then parse. Do it together..
@param list_type: which booklist to import.
"""
if list_type is None:
list_type = self.request.get('list_type')
if not list_type:
return
try:
datas = douban.get_book_list(user, list_type)
except utils.errors.ParseJsonError as err:
logging.error("ERROR while importing from Douban, user_key: " + user.key() +
" list_type: " + list_type)
logging.error(err)
self._log(err)
return
bl = BookList.get_or_create(user, list_type)
bl.start_importing(len(datas))
# also clear those in memcache
helper = SortHelper(user)
helper.clear(list_type)
for related in datas:
# also added into memcache in merge_into_datastore()
b = related.merge_into_datastore(user, update_book=False)
if b:
# when already such book there, b will be None
try:
url, datas = tongji.get_by_isbn(b.isbn)
b.set_tongji_info(url, datas)
except Exception as err:
logging.error("ERROR while saving TJ info, isbn: " + b.isbn)
logging.error(err)
self._log(err)
# after all, finish importing
bl = BookList.get_or_create(user, list_type)
bl.douban_amount = None
bl.put()
return
def _edit_booklist(self, from_lists):
""" Change or delete belonging booklist.
@param from_lists: The booklists this book was previously in.
"""
target_list_name = self.request.get('booklist')
if target_list_name:
if target_list_name == "remove":
# remove from any booklists
for bl in from_lists:
bl.remove_isbn(self.isbn)
# also remove any Rating, Tags, Comment
r = elements.Rating.get_by_user_isbn(self.user, self.isbn)
if r:
r.delete()
t = elements.Tags.get_by_user_isbn(self.user, self.isbn)
if t:
t.delete()
c = elements.Comment.get_by_user_isbn(self.user, self.isbn)
if c:
c.delete()
# sync memcache
helper = books.SortHelper(self.user)
helper.delete(self.isbn)
# sync to douban, delete all related
self._sync_edit("DELETE")
else:
# change to one booklist
target_list = BookList.get_or_create(self.user, target_list_name)
if from_lists:
for bl in from_lists:
bl.remove_isbn(self.isbn)
target_list.add_isbn(self.isbn, front=True)
# sync to douban, modify
self._sync_edit("PUT")
else:
target_list.add_isbn(self.isbn, front=True)
# sync to douban, add
self._sync_edit("POST")
# sync memcache
helper = books.SortHelper(self.user)
helper.set_by_isbn(target_list_name, self.isbn)
return
