def get(self):
page = self.request.GET.get('page', "1")
try:
page = int(page)
except:
self.abort(400, 'page is invalid')
page = max(1, page)
count = History.count()
start = (page - 1) * PAGE_SIZE
historys = History.gets_all(start, PAGE_SIZE)
self.render_response('/history.html',
historys=historys,
page = page,
page_count = -(-count / PAGE_SIZE))
