def _try_fetch_render(self, douban_id):
""" Try fetching a book from douban.
If no exception raised, render it.
"""
try:
b = douban.get_book_all_by_id(douban_id, self.user)
b.merge_into_datastore(self.user)
except utils.errors.FetchDataError:
# No such book, display its original link
self._render_no_such_book(douban_id)
except utils.errors.ParseJsonError:
# This is something I should care about, some cases are not covered
msg = "Error PARSING book information of douban_id: " + douban_id
url = "/error?" + urllib.urlencode({'msg': msg})
self.redirect(url)
else:
self.redirect('/book/%s' % b.book.isbn)
return
def _load(self, user, isbn, reload, tjlib=False):
""" Load a book from datastore or from douban.
@param reload: directly load from douban, no matter whether there is in datastore.
@param tjlib: whether to also load Tongji Library status when reloading.
@return: a BookRelated object
"""
if not reload:
# everything here
return books.BookRelated.get_by_user_isbn(user, isbn)
basic_book = douban.get_book_by_isbn(isbn)
full = douban.get_book_all_by_id(basic_book.douban_id, user)
# douban API may have a bug: not providing summary somehow
full.book.summary = basic_book.summary
full.merge_into_datastore(user)
if tjlib:
url, datas = tongji.get_by_isbn(isbn)
full.book.set_tongji_info(url, datas)
return full
def get(self):
action = self.request.get('action')
if action == 'clear':
# clear all data in db
msg = self._clear()
user = None
elif action == 'load':
email = auth.get_email_from_cookies(self.request.cookies)
user = auth.user.User.get_by_email(email)
if not user:
self.redirect('/login')
return
# load books from douban
# these books are for defense only..
ids = ["20381804", "10555435", "1432683"]
for douban_id in ids:
if Book.get_by_douban_id(douban_id) is None:
# load it!
b = douban.get_book_all_by_id(douban_id, user)
b.merge_into_datastore(user)
msg = "DONE"
else:
# default case
email = auth.get_email_from_cookies(self.request.cookies)
user = auth.user.User.get_by_email(email)
if not user:
self.redirect('/login')
return
msg = self._test(user)
template = utils.get_jinja_env().get_template('test.html')
context = {
'user': user,
'msg': msg
}
self.response.out.write(template.render(context))
return