ok.
thanks to Alexander.
On Nov 5, 7:08 am, Alexander Kojevnikov <[EMAIL PROTECTED]>
wrote:
> > the friends is a sub-list of memory entity.
> > Why not load the list on lazy mode.
>
> > Faint, I will manual get the lists .
> > But how can I put the sub-list to the object.
>
> > does google provide sample code on this.
>
> It's Python, you can create a member variable dynamically any time by
> assigning to it:
>
> memory.fetched_friends = my_fetched_entities
>
> I suggest caching the friend entities in a dictionary to avoid
> fetching the same one multiple times:
>
> memories = Memory.all().order('-date').fetch(limit=X)
> friends = {}
> for memory in memories:
> memory.fetched_friends = []
> for friend_key in memory.friends:
> if not friend_key in friends:
> friends[friend_key] = Friends.get(friend_key)
> memory.fetched_friends.append(friends[friend_key])
>
> You can better this code by passing an array of keys to Friends.get()
> to fetch all friend entities at once.
>
> --
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