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Posted to user@couchdb.apache.org by James Jackson <ja...@cern.ch> on 2010/09/09 01:04:38 UTC
Updates methods
Hi,
I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
I have inserted the following design document into my database:
{
"_id":"_design/update",
"_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
"language":"javascript",
"updates" : {
"add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
}
}
However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
Regards,
James.
Re: Updates methods
Posted by Robert Newson <ro...@gmail.com>.
You can use a validate_doc_update function to ensure that all
documents adhere to your requirements, but you can't modify the
document in this function. What seems typical is to throw in the event
that, say doc.user != userCtx.user. Any client that correctly inserts
their name into the document can write. As a convenience, you can
supply an update handler that automates it. As a further convenience,
you can use a rewrite rule to make it easier to hit the update
handler's url.
B.
On Thu, Sep 9, 2010 at 1:18 AM, James Jackson <ja...@cern.ch> wrote:
> Oh, also, as mentioned in that ticket, this functionality should only be called on user interaction; replication should not modify the documents. Well, at least in what I want to do - but then again the 'update' method could have an isReplication field passed, for example, to allow the user to do whatever they want.
>
> Regards,
> James.
>
> On 9 Sep 2010, at 09:11, Johannes J. Schmidt wrote:
>
>> In my application i use update handlers to insert user information into
>> the documents.
>> However, I am not able to insert that information when updating
>> attachments via the attachment API. I can write an update function to
>> update attachments but
>> 1) I have to encode those attachments as Base64 and
>> 2) it reaches a limit: Uncaught error in HTTP request:
>> {exit,{body_too_large,content_length}}
>>
>> Greetings
>> Johannes
>>
>> Am Donnerstag, den 09.09.2010, 08:57 +0100 schrieb James Jackson:
>>> There is discussion on it in this ticket:
>>>
>>> https://issues.apache.org/jira/browse/COUCHDB-441
>>>
>>> However, it appears to have morphed into what we have available today.
>>>
>>> Regards,
>>> James.
>>>
>>> On 9 Sep 2010, at 08:56, Johannes J. Schmidt wrote:
>>>
>>>> Hi James,
>>>>
>>>> From my point of knowledge this is not possible.
>>>> I would also very appreciate such a functionality to achieve exactly the
>>>> same as you describe.
>>>> I think this would be useful for many use cases.
>>>>
>>>> Does anybody knows more about this topic? Is this a planned feature?
>>>>
>>>> Greetings
>>>> Johannes
>>>>
>>>> Am Donnerstag, den 09.09.2010, 08:46 +0100 schrieb James Jackson:
>>>>> Hi Johannes,
>>>>>
>>>>> Thank you - so from what I can see, it isn't actually possible in intercept all document inserts and modify them server-side? The update handler functionality appears to only be able to modify existing docs, or create a new one, and even then has to be called with a special URL syntax.
>>>>>
>>>>> What I would like to achieve (for implementation of a security policy) is to be able to add some information from the userCtx object to every document on an initial PUT / POST, without requiring the user to call something explicitly different. While I could steam ahead and patch our version of CouchDB to perform this, I'd rather not diverge from the trunk more than we already have (with the addition of custom HTTP auth handlers).
>>>>>
>>>>> Is there any way to accomplish this at present?
>>>>>
>>>>> Regards,
>>>>> James.
>>>>>
>>>>> On 9 Sep 2010, at 06:08, Johannes J. Schmidt wrote:
>>>>>
>>>>>> Hi James,
>>>>>>
>>>>>> Update handlers are not automatically executed on regular document
>>>>>> updates. Instead, you have to PUT your update to an URL like
>>>>>>
>>>>>> $HOST/$DB/_design/update/_update/add_user
>>>>>>
>>>>>> You will have to process every property manually inside the update
>>>>>> function.
>>>>>>
>>>>>> Read more about update handlers in the wiki:
>>>>>> http://wiki.apache.org/couchdb/Document_Update_Handlers
>>>>>>
>>>>>> Greetings
>>>>>> Johannes
>>>>>> Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
>>>>>>> Hi,
>>>>>>>
>>>>>>> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
>>>>>>>
>>>>>>> I have inserted the following design document into my database:
>>>>>>>
>>>>>>> {
>>>>>>> "_id":"_design/update",
>>>>>>> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
>>>>>>> "language":"javascript",
>>>>>>> "updates" : {
>>>>>>> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
>>>>>>> }
>>>>>>> }
>>>>>>>
>>>>>>> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
>>>>>>>
>>>>>>> Regards,
>>>>>>> James.
>>>>>>
>>>>>> --
>>>>>> Netzmerk GbR
>>>>>> Johannes J. Schmidt
>>>>>>
>>>>>> http://netzmerk.com
>>>>>> 0157 79 76 20 30
>>>>>>
>>>>>> Am Vierstückenpfuhl 3a
>>>>>> 14167 Berlin
>>>>>
>>>>
>>>> --
>>>> Netzmerk GbR
>>>> Johannes J. Schmidt
>>>>
>>>> http://netzmerk.com
>>>> 0157 79 76 20 30
>>>>
>>>> Am Vierstückenpfuhl 3a
>>>> 14167 Berlin
>>>
>>
>> --
>> Netzmerk GbR
>> Johannes J. Schmidt
>>
>> http://netzmerk.com
>> 0157 79 76 20 30
>>
>> Am Vierstückenpfuhl 3a
>> 14167 Berlin
>
>
Re: Updates methods
Posted by James Jackson <ja...@cern.ch>.
Oh, also, as mentioned in that ticket, this functionality should only be called on user interaction; replication should not modify the documents. Well, at least in what I want to do - but then again the 'update' method could have an isReplication field passed, for example, to allow the user to do whatever they want.
Regards,
James.
On 9 Sep 2010, at 09:11, Johannes J. Schmidt wrote:
> In my application i use update handlers to insert user information into
> the documents.
> However, I am not able to insert that information when updating
> attachments via the attachment API. I can write an update function to
> update attachments but
> 1) I have to encode those attachments as Base64 and
> 2) it reaches a limit: Uncaught error in HTTP request:
> {exit,{body_too_large,content_length}}
>
> Greetings
> Johannes
>
> Am Donnerstag, den 09.09.2010, 08:57 +0100 schrieb James Jackson:
>> There is discussion on it in this ticket:
>>
>> https://issues.apache.org/jira/browse/COUCHDB-441
>>
>> However, it appears to have morphed into what we have available today.
>>
>> Regards,
>> James.
>>
>> On 9 Sep 2010, at 08:56, Johannes J. Schmidt wrote:
>>
>>> Hi James,
>>>
>>> From my point of knowledge this is not possible.
>>> I would also very appreciate such a functionality to achieve exactly the
>>> same as you describe.
>>> I think this would be useful for many use cases.
>>>
>>> Does anybody knows more about this topic? Is this a planned feature?
>>>
>>> Greetings
>>> Johannes
>>>
>>> Am Donnerstag, den 09.09.2010, 08:46 +0100 schrieb James Jackson:
>>>> Hi Johannes,
>>>>
>>>> Thank you - so from what I can see, it isn't actually possible in intercept all document inserts and modify them server-side? The update handler functionality appears to only be able to modify existing docs, or create a new one, and even then has to be called with a special URL syntax.
>>>>
>>>> What I would like to achieve (for implementation of a security policy) is to be able to add some information from the userCtx object to every document on an initial PUT / POST, without requiring the user to call something explicitly different. While I could steam ahead and patch our version of CouchDB to perform this, I'd rather not diverge from the trunk more than we already have (with the addition of custom HTTP auth handlers).
>>>>
>>>> Is there any way to accomplish this at present?
>>>>
>>>> Regards,
>>>> James.
>>>>
>>>> On 9 Sep 2010, at 06:08, Johannes J. Schmidt wrote:
>>>>
>>>>> Hi James,
>>>>>
>>>>> Update handlers are not automatically executed on regular document
>>>>> updates. Instead, you have to PUT your update to an URL like
>>>>>
>>>>> $HOST/$DB/_design/update/_update/add_user
>>>>>
>>>>> You will have to process every property manually inside the update
>>>>> function.
>>>>>
>>>>> Read more about update handlers in the wiki:
>>>>> http://wiki.apache.org/couchdb/Document_Update_Handlers
>>>>>
>>>>> Greetings
>>>>> Johannes
>>>>> Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
>>>>>> Hi,
>>>>>>
>>>>>> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
>>>>>>
>>>>>> I have inserted the following design document into my database:
>>>>>>
>>>>>> {
>>>>>> "_id":"_design/update",
>>>>>> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
>>>>>> "language":"javascript",
>>>>>> "updates" : {
>>>>>> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
>>>>>>
>>>>>> Regards,
>>>>>> James.
>>>>>
>>>>> --
>>>>> Netzmerk GbR
>>>>> Johannes J. Schmidt
>>>>>
>>>>> http://netzmerk.com
>>>>> 0157 79 76 20 30
>>>>>
>>>>> Am Vierstückenpfuhl 3a
>>>>> 14167 Berlin
>>>>
>>>
>>> --
>>> Netzmerk GbR
>>> Johannes J. Schmidt
>>>
>>> http://netzmerk.com
>>> 0157 79 76 20 30
>>>
>>> Am Vierstückenpfuhl 3a
>>> 14167 Berlin
>>
>
> --
> Netzmerk GbR
> Johannes J. Schmidt
>
> http://netzmerk.com
> 0157 79 76 20 30
>
> Am Vierstückenpfuhl 3a
> 14167 Berlin
Re: Updates methods
Posted by James Jackson <ja...@cern.ch>.
I'd be happy to code this up, but I wonder if there are catches that exist which are why it doesn't exist already...
On 9 Sep 2010, at 09:11, Johannes J. Schmidt wrote:
> In my application i use update handlers to insert user information into
> the documents.
> However, I am not able to insert that information when updating
> attachments via the attachment API. I can write an update function to
> update attachments but
> 1) I have to encode those attachments as Base64 and
> 2) it reaches a limit: Uncaught error in HTTP request:
> {exit,{body_too_large,content_length}}
>
> Greetings
> Johannes
>
> Am Donnerstag, den 09.09.2010, 08:57 +0100 schrieb James Jackson:
>> There is discussion on it in this ticket:
>>
>> https://issues.apache.org/jira/browse/COUCHDB-441
>>
>> However, it appears to have morphed into what we have available today.
>>
>> Regards,
>> James.
>>
>> On 9 Sep 2010, at 08:56, Johannes J. Schmidt wrote:
>>
>>> Hi James,
>>>
>>> From my point of knowledge this is not possible.
>>> I would also very appreciate such a functionality to achieve exactly the
>>> same as you describe.
>>> I think this would be useful for many use cases.
>>>
>>> Does anybody knows more about this topic? Is this a planned feature?
>>>
>>> Greetings
>>> Johannes
>>>
>>> Am Donnerstag, den 09.09.2010, 08:46 +0100 schrieb James Jackson:
>>>> Hi Johannes,
>>>>
>>>> Thank you - so from what I can see, it isn't actually possible in intercept all document inserts and modify them server-side? The update handler functionality appears to only be able to modify existing docs, or create a new one, and even then has to be called with a special URL syntax.
>>>>
>>>> What I would like to achieve (for implementation of a security policy) is to be able to add some information from the userCtx object to every document on an initial PUT / POST, without requiring the user to call something explicitly different. While I could steam ahead and patch our version of CouchDB to perform this, I'd rather not diverge from the trunk more than we already have (with the addition of custom HTTP auth handlers).
>>>>
>>>> Is there any way to accomplish this at present?
>>>>
>>>> Regards,
>>>> James.
>>>>
>>>> On 9 Sep 2010, at 06:08, Johannes J. Schmidt wrote:
>>>>
>>>>> Hi James,
>>>>>
>>>>> Update handlers are not automatically executed on regular document
>>>>> updates. Instead, you have to PUT your update to an URL like
>>>>>
>>>>> $HOST/$DB/_design/update/_update/add_user
>>>>>
>>>>> You will have to process every property manually inside the update
>>>>> function.
>>>>>
>>>>> Read more about update handlers in the wiki:
>>>>> http://wiki.apache.org/couchdb/Document_Update_Handlers
>>>>>
>>>>> Greetings
>>>>> Johannes
>>>>> Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
>>>>>> Hi,
>>>>>>
>>>>>> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
>>>>>>
>>>>>> I have inserted the following design document into my database:
>>>>>>
>>>>>> {
>>>>>> "_id":"_design/update",
>>>>>> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
>>>>>> "language":"javascript",
>>>>>> "updates" : {
>>>>>> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
>>>>>>
>>>>>> Regards,
>>>>>> James.
>>>>>
>>>>> --
>>>>> Netzmerk GbR
>>>>> Johannes J. Schmidt
>>>>>
>>>>> http://netzmerk.com
>>>>> 0157 79 76 20 30
>>>>>
>>>>> Am Vierstückenpfuhl 3a
>>>>> 14167 Berlin
>>>>
>>>
>>> --
>>> Netzmerk GbR
>>> Johannes J. Schmidt
>>>
>>> http://netzmerk.com
>>> 0157 79 76 20 30
>>>
>>> Am Vierstückenpfuhl 3a
>>> 14167 Berlin
>>
>
> --
> Netzmerk GbR
> Johannes J. Schmidt
>
> http://netzmerk.com
> 0157 79 76 20 30
>
> Am Vierstückenpfuhl 3a
> 14167 Berlin
Re: Updates methods
Posted by "Johannes J. Schmidt" <sc...@netzmerk.com>.
In my application i use update handlers to insert user information into
the documents.
However, I am not able to insert that information when updating
attachments via the attachment API. I can write an update function to
update attachments but
1) I have to encode those attachments as Base64 and
2) it reaches a limit: Uncaught error in HTTP request:
{exit,{body_too_large,content_length}}
Greetings
Johannes
Am Donnerstag, den 09.09.2010, 08:57 +0100 schrieb James Jackson:
> There is discussion on it in this ticket:
>
> https://issues.apache.org/jira/browse/COUCHDB-441
>
> However, it appears to have morphed into what we have available today.
>
> Regards,
> James.
>
> On 9 Sep 2010, at 08:56, Johannes J. Schmidt wrote:
>
> > Hi James,
> >
> > From my point of knowledge this is not possible.
> > I would also very appreciate such a functionality to achieve exactly the
> > same as you describe.
> > I think this would be useful for many use cases.
> >
> > Does anybody knows more about this topic? Is this a planned feature?
> >
> > Greetings
> > Johannes
> >
> > Am Donnerstag, den 09.09.2010, 08:46 +0100 schrieb James Jackson:
> >> Hi Johannes,
> >>
> >> Thank you - so from what I can see, it isn't actually possible in intercept all document inserts and modify them server-side? The update handler functionality appears to only be able to modify existing docs, or create a new one, and even then has to be called with a special URL syntax.
> >>
> >> What I would like to achieve (for implementation of a security policy) is to be able to add some information from the userCtx object to every document on an initial PUT / POST, without requiring the user to call something explicitly different. While I could steam ahead and patch our version of CouchDB to perform this, I'd rather not diverge from the trunk more than we already have (with the addition of custom HTTP auth handlers).
> >>
> >> Is there any way to accomplish this at present?
> >>
> >> Regards,
> >> James.
> >>
> >> On 9 Sep 2010, at 06:08, Johannes J. Schmidt wrote:
> >>
> >>> Hi James,
> >>>
> >>> Update handlers are not automatically executed on regular document
> >>> updates. Instead, you have to PUT your update to an URL like
> >>>
> >>> $HOST/$DB/_design/update/_update/add_user
> >>>
> >>> You will have to process every property manually inside the update
> >>> function.
> >>>
> >>> Read more about update handlers in the wiki:
> >>> http://wiki.apache.org/couchdb/Document_Update_Handlers
> >>>
> >>> Greetings
> >>> Johannes
> >>> Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
> >>>> Hi,
> >>>>
> >>>> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
> >>>>
> >>>> I have inserted the following design document into my database:
> >>>>
> >>>> {
> >>>> "_id":"_design/update",
> >>>> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
> >>>> "language":"javascript",
> >>>> "updates" : {
> >>>> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
> >>>> }
> >>>> }
> >>>>
> >>>> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
> >>>>
> >>>> Regards,
> >>>> James.
> >>>
> >>> --
> >>> Netzmerk GbR
> >>> Johannes J. Schmidt
> >>>
> >>> http://netzmerk.com
> >>> 0157 79 76 20 30
> >>>
> >>> Am Vierstückenpfuhl 3a
> >>> 14167 Berlin
> >>
> >
> > --
> > Netzmerk GbR
> > Johannes J. Schmidt
> >
> > http://netzmerk.com
> > 0157 79 76 20 30
> >
> > Am Vierstückenpfuhl 3a
> > 14167 Berlin
>
--
Netzmerk GbR
Johannes J. Schmidt
http://netzmerk.com
0157 79 76 20 30
Am Vierstückenpfuhl 3a
14167 Berlin
Re: Updates methods
Posted by James Jackson <ja...@cern.ch>.
There is discussion on it in this ticket:
https://issues.apache.org/jira/browse/COUCHDB-441
However, it appears to have morphed into what we have available today.
Regards,
James.
On 9 Sep 2010, at 08:56, Johannes J. Schmidt wrote:
> Hi James,
>
> From my point of knowledge this is not possible.
> I would also very appreciate such a functionality to achieve exactly the
> same as you describe.
> I think this would be useful for many use cases.
>
> Does anybody knows more about this topic? Is this a planned feature?
>
> Greetings
> Johannes
>
> Am Donnerstag, den 09.09.2010, 08:46 +0100 schrieb James Jackson:
>> Hi Johannes,
>>
>> Thank you - so from what I can see, it isn't actually possible in intercept all document inserts and modify them server-side? The update handler functionality appears to only be able to modify existing docs, or create a new one, and even then has to be called with a special URL syntax.
>>
>> What I would like to achieve (for implementation of a security policy) is to be able to add some information from the userCtx object to every document on an initial PUT / POST, without requiring the user to call something explicitly different. While I could steam ahead and patch our version of CouchDB to perform this, I'd rather not diverge from the trunk more than we already have (with the addition of custom HTTP auth handlers).
>>
>> Is there any way to accomplish this at present?
>>
>> Regards,
>> James.
>>
>> On 9 Sep 2010, at 06:08, Johannes J. Schmidt wrote:
>>
>>> Hi James,
>>>
>>> Update handlers are not automatically executed on regular document
>>> updates. Instead, you have to PUT your update to an URL like
>>>
>>> $HOST/$DB/_design/update/_update/add_user
>>>
>>> You will have to process every property manually inside the update
>>> function.
>>>
>>> Read more about update handlers in the wiki:
>>> http://wiki.apache.org/couchdb/Document_Update_Handlers
>>>
>>> Greetings
>>> Johannes
>>> Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
>>>> Hi,
>>>>
>>>> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
>>>>
>>>> I have inserted the following design document into my database:
>>>>
>>>> {
>>>> "_id":"_design/update",
>>>> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
>>>> "language":"javascript",
>>>> "updates" : {
>>>> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
>>>> }
>>>> }
>>>>
>>>> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
>>>>
>>>> Regards,
>>>> James.
>>>
>>> --
>>> Netzmerk GbR
>>> Johannes J. Schmidt
>>>
>>> http://netzmerk.com
>>> 0157 79 76 20 30
>>>
>>> Am Vierstückenpfuhl 3a
>>> 14167 Berlin
>>
>
> --
> Netzmerk GbR
> Johannes J. Schmidt
>
> http://netzmerk.com
> 0157 79 76 20 30
>
> Am Vierstückenpfuhl 3a
> 14167 Berlin
Re: Updates methods
Posted by "Johannes J. Schmidt" <sc...@netzmerk.com>.
Hi James,
From my point of knowledge this is not possible.
I would also very appreciate such a functionality to achieve exactly the
same as you describe.
I think this would be useful for many use cases.
Does anybody knows more about this topic? Is this a planned feature?
Greetings
Johannes
Am Donnerstag, den 09.09.2010, 08:46 +0100 schrieb James Jackson:
> Hi Johannes,
>
> Thank you - so from what I can see, it isn't actually possible in intercept all document inserts and modify them server-side? The update handler functionality appears to only be able to modify existing docs, or create a new one, and even then has to be called with a special URL syntax.
>
> What I would like to achieve (for implementation of a security policy) is to be able to add some information from the userCtx object to every document on an initial PUT / POST, without requiring the user to call something explicitly different. While I could steam ahead and patch our version of CouchDB to perform this, I'd rather not diverge from the trunk more than we already have (with the addition of custom HTTP auth handlers).
>
> Is there any way to accomplish this at present?
>
> Regards,
> James.
>
> On 9 Sep 2010, at 06:08, Johannes J. Schmidt wrote:
>
> > Hi James,
> >
> > Update handlers are not automatically executed on regular document
> > updates. Instead, you have to PUT your update to an URL like
> >
> > $HOST/$DB/_design/update/_update/add_user
> >
> > You will have to process every property manually inside the update
> > function.
> >
> > Read more about update handlers in the wiki:
> > http://wiki.apache.org/couchdb/Document_Update_Handlers
> >
> > Greetings
> > Johannes
> > Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
> >> Hi,
> >>
> >> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
> >>
> >> I have inserted the following design document into my database:
> >>
> >> {
> >> "_id":"_design/update",
> >> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
> >> "language":"javascript",
> >> "updates" : {
> >> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
> >> }
> >> }
> >>
> >> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
> >>
> >> Regards,
> >> James.
> >
> > --
> > Netzmerk GbR
> > Johannes J. Schmidt
> >
> > http://netzmerk.com
> > 0157 79 76 20 30
> >
> > Am Vierstückenpfuhl 3a
> > 14167 Berlin
>
--
Netzmerk GbR
Johannes J. Schmidt
http://netzmerk.com
0157 79 76 20 30
Am Vierstückenpfuhl 3a
14167 Berlin
Re: Updates methods
Posted by James Jackson <ja...@cern.ch>.
Hi Johannes,
Thank you - so from what I can see, it isn't actually possible in intercept all document inserts and modify them server-side? The update handler functionality appears to only be able to modify existing docs, or create a new one, and even then has to be called with a special URL syntax.
What I would like to achieve (for implementation of a security policy) is to be able to add some information from the userCtx object to every document on an initial PUT / POST, without requiring the user to call something explicitly different. While I could steam ahead and patch our version of CouchDB to perform this, I'd rather not diverge from the trunk more than we already have (with the addition of custom HTTP auth handlers).
Is there any way to accomplish this at present?
Regards,
James.
On 9 Sep 2010, at 06:08, Johannes J. Schmidt wrote:
> Hi James,
>
> Update handlers are not automatically executed on regular document
> updates. Instead, you have to PUT your update to an URL like
>
> $HOST/$DB/_design/update/_update/add_user
>
> You will have to process every property manually inside the update
> function.
>
> Read more about update handlers in the wiki:
> http://wiki.apache.org/couchdb/Document_Update_Handlers
>
> Greetings
> Johannes
> Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
>> Hi,
>>
>> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
>>
>> I have inserted the following design document into my database:
>>
>> {
>> "_id":"_design/update",
>> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
>> "language":"javascript",
>> "updates" : {
>> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
>> }
>> }
>>
>> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
>>
>> Regards,
>> James.
>
> --
> Netzmerk GbR
> Johannes J. Schmidt
>
> http://netzmerk.com
> 0157 79 76 20 30
>
> Am Vierstückenpfuhl 3a
> 14167 Berlin
Re: Updates methods
Posted by "Johannes J. Schmidt" <sc...@netzmerk.com>.
Hi James,
Update handlers are not automatically executed on regular document
updates. Instead, you have to PUT your update to an URL like
$HOST/$DB/_design/update/_update/add_user
You will have to process every property manually inside the update
function.
Read more about update handlers in the wiki:
http://wiki.apache.org/couchdb/Document_Update_Handlers
Greetings
Johannes
Am Donnerstag, den 09.09.2010, 00:04 +0100 schrieb James Jackson:
> Hi,
>
> I'm trying to implement a method to modify all documents before they are written to the DB. From my poking around in various tickets, I believe the updates entry in a design document is what I'm after (I'm running 1.0.1).
>
> I have inserted the following design document into my database:
>
> {
> "_id":"_design/update",
> "_rev":"1-8800f3bdde13e5bcf6738635f0265b6d",
> "language":"javascript",
> "updates" : {
> "add_user":"function(doc, req){doc.newauth = req.userCtx; return [doc, \"ok\"];}"
> }
> }
>
> However, this does not appear to get run when putting a document to the database (nothing in the debug log but the usual). Is this functionality supported? Am I doing something funny? All help appreciated!
>
> Regards,
> James.
--
Netzmerk GbR
Johannes J. Schmidt
http://netzmerk.com
0157 79 76 20 30
Am Vierstückenpfuhl 3a
14167 Berlin