class ComposeHandler(MainHandler):
_re_tags_separator = re.compile(r'(\/|\\|\,|\ |\|){1,}')
_time_delta = datetime.timedelta(hours=8)
def initialize(self, *args, **kwargs):
self.form = ComposeForm(self.request.arguments)
def UTC2BeiJingTime(self, time):
'''the server may be anywhere in the world,
so we manually adjust the time'''
return time + self._time_delta
def BeiJing2UTCTime(self, time):
return time - self._time_delta
def separate_tags(self, tags_str):
# first,converted to lowercase and
# all of the separator is replaced with ` `
# second, strip repalced_str (sometimes user input tags :"linux,")
# third, split with ` `
# more flexible than direct invoke `re.split`
return self._re_tags_separator.sub(' ',
tags_str.lower()).strip().split()
@tornado.web.authenticated
@gen.coroutine
def get(self, title):
post = yield Post.asyncQuery(title=title).first()
self.form.create_time.data = \
self.UTC2BeiJingTime(datetime.datetime.utcnow())
if post:
self.form.post_id.data = post.id
self.form.title.data = post.title
self.form.content.data = post.content
self.form.markdown.data = post.markdown
self.form.create_time.data = \
self.UTC2BeiJingTime(post.create_time)
self.form.category.data = post.category.name
self.form.tags.data = ','.join(post.tags)
self.render("compose.html", form=self.form)
@tornado.web.authenticated
@gen.coroutine
def post(self, title):
if self.form.validate():
post = None
if self.form.post_id.data:
post = yield Post.asyncQuery(id=self.form.post_id.data).first()
if post:
post.modified_time = datetime.datetime.utcnow()
else:
post = Post()
post.create_time = \
self.BeiJing2UTCTime(self.form.create_time.data)
title = self.form.title.data.replace(' ', '-')
content = self.form.content.data
markdown_text = self.form.markdown.data
tags = self.separate_tags(self.form.tags.data)
category_str = self.form.category.data.capitalize()
category = yield Category.asyncQuery(name=category_str).first()
if not category:
category = Category()
category.name = category_str
yield category.save()
post.title = title
post.content = content
post.markdown = markdown_text
post.category = category
post.tags = tags
post.author = self.current_user
yield post.save()
self.flash("compose finsh!")
return self.redirect('/blog')
self.render("compose.html", form=self.form)
