handlers.py 文件源码

def get_page_context(self):
        """
        Return current page context
        """
        paginate = self.get_argument('paginate', None)

        try:
            page = int(self.get_argument('page', 1))
        except ValueError:
            page = 1

        try:
            count = Record\
                .select()\
                .where(Record.active == True)\
                .count()
        except peewee.IntegrityError:
            count = 0

        per_page = env.RECORDS_PER_PAGE
        page_count = int(count/per_page) + int(bool(count % per_page))

        prev_page, page, next_page = self.paging(page, page_count)

        try:
            if paginate is None:
                records = Record\
                    .select()\
                    .where(Record.active == True)\
                    .order_by(Record.name.asc())\
                    .paginate(
                        page,
                        paginate_by=per_page)
            else:
                records = Record\
                    .select(
                        Record,
                        RecordPage)\
                    .where(
                        RecordPage.page == page)\
                    .join(
                        RecordPage,
                        join_type=peewee.JOIN.INNER)\
                    .order_by(Record.name.asc())
        except peewee.IntegrityError:
            records = []

        return dict(records=records,
                    paginate=paginate,
                    page_count=page_count,
                    prev_page=prev_page,
                    page=page,
                    next_page=next_page)