[Qgis-user] qgis-server vs layer id

[Alessandro Pasotti]

Hi Andreas,

the fix for layer IDs should not be particularly hard, I don't know
about the persistent cache, do you have a kind of QEP with some more
details on your proposed caching behavior?


2015-04-09 9:03 GMT+02:00 Andreas Neumann <a.neumann at carto.net>:
> Hi,
>
> I would prefer if this issue could be fixed within QGIS Server. I also have
> the same problem when copying projects.
>
> We could combine this effort with a more persistent project/layer cache of
> QGIS server, so the cache would survive Apache restarts.
>
> I would be available for co-financing if others would join the effort.
>
> Andreas
>
>
> On 09.04.2015 08:53, Nathan Woodrow wrote:
>
> Hey Burghardt,
>
> As a workaround for now it's pretty easy to read the xml file and replace
> the layer ids using Python.  QGIS doesn't care about the format of the id as
> long as it's a strings so you could replace them all with a GUID if you
> wanted.
>
> - Nathan
>
> On Thu, 9 Apr 2015 at 16:46 <Burghardt.Scholle at stadt.wolfsburg.de> wrote:
>>
>> Dear list,
>>
>> I enjoy working with templates for QGIS projects. This brings when working
>> with QGIS Desktop many advantages, but leads to problems with the QGIS Web
>> Client. When I save a project file under a different name, the id of the
>> layer, unfortunately, is maintained. If I use both project files in the
>> qgis-server, this creates problems with caching of layer. That is
>> particularly evident when identical layer named differently or otherwise be
>> symbolized.
>> This topic is discussed on several occasions in the past [1,2] and has
>> been referred to as "bug" or "limitation". In [2] it's said that the
>> combination of project name and layer ID could be a solution for the
>> problem. Up to and including version 2.8.1, the change has not yet been
>> carried out. Is there an effort to change the creation of the layer ID in a
>> future release?
>>
>> Kind regards
>> Burghardt
>>
>> [1]
>> http://osgeo-org.1560.x6.nabble.com/Qgis-server-returns-map-from-another-project-that-is-defined-in-URL-td5153101.html#a5153150
>> [2] http://hub.qgis.org/issues/7956
>>
>> ***************
>> mailto:burghardt.scholle at stadt.wolfsburg.de
>>
>>
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>
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-- 
Alessandro Pasotti
w3:   www.itopen.it