Thank you very much.
" It'll update document A to a revision with no properties except for
"_removed":true. " does this mean that I can not obtain document A by view
or by document A's ID? or I need add _removed is not true in my view or
query?
“the next time document A is updated the sync function doesn't grant user B
access, then user B will no longer have access to the channel. ” If
document A have 3 property, and each property determines user's channel.
does this means i should write sync function like this:
if(document A have property P1 )
{access(user1,P1)}
if(document A have property P2 )
{access(user1,P2)}
if(document A have property P3 )
{access(user1,P3)}
if(document A removed property P1 )
{
if(document A have property P2 )
{access(user1,P2)}
if(document A have property P3 )
{access(user1,P3)}
}
if(document A removed property P2 )
{
if(document A have property P1 )
{access(user1,P1)}
if(document A have property P3 )
{access(user1,P3)}
}
if(document A removed property P3 )
{
if(document A have property P1 )
{access(user1,P1)}
if(document A have property P2 )
{access(user1,P2)}
}
On Wednesday, May 6, 2015 at 4:17:51 AM UTC+8, Jens Alfke wrote:
>
>
> > On May 5, 2015, at 12:53 PM, atom992 <[email protected] <javascript:>>
> wrote:
> >
> > I want to know that If the user's role "role1" has been removed. what
> happend on my couchbase Lite with document A? will document A be
> removed(that what I want to do)?
>
> Almost. It'll update document A to a revision with no properties except
> for "_removed":true.
>
> > at the same time, I have another question about sync. My sync
> function based on document A's property P1, If document A have property P1
> with the specified value,user B(can be queried by document A) will assign
> channel1. If document A's property P1 have been removed ,user B should not
> assign channel1.how should I do to remove channel1 from user B when
> document A's property P1 have been removed?
>
> I'm not quite sure I understand the question. If the sync function
> evaluating document A calls access( ) to grant user B access to a channel,
> and then the next time document A is updated the sync function doesn't
> grant user B access, then user B will no longer have access to the channel.
> (Unless there is another document that still gives her access, or her
> account's admin_channels gives her access, or she has a role that has
> access.)
>
> Basically, every document in SG has metadata containing a list of
> user-to-channel grants. That list is rebuild from scratch every time the
> sync function runs. A user's access is computed by merging together the
> grants from all current documents.
>
> —Jens
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