Created
May 20, 2009 03:00
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| def get_page(cls, app_id, bookmark=None): | |
| pagesize = 15 | |
| next, more, less = None, None, None | |
| if not bookmark: # first fetch | |
| transactions = Transaction.app_id(app_id).order("-date").fetch(pagesize + 1) | |
| more = True if len(transactions) == pagesize+1 else None | |
| else: | |
| if bookmark.startswith("-"): # we're moving backwards | |
| date = str_to_date(bookmark[1:]) | |
| transactions = Transaction.app_id(app_id).order("date").filter("date >", date).fetch(pagesize+1) | |
| more = True | |
| less = True if len(transactions) == pagesize+1 else None | |
| else: | |
| date = str_to_date(bookmark) | |
| transactions = Transaction.app_id(app_id).order("-date").filter('date <=', date).fetch(pagesize+1) | |
| less = True # since we're moving forward it's safe to point backwards. | |
| more = True if len(transactions) == pagesize+1 else None | |
| if len(transactions) == pagesize + 1: # we have one more page to show | |
| next = transactions[-1].date | |
| transactions = transactions[:pagesize] | |
| return transactions, next, more, less | |
| get_page = classmethod(get_page) |
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