[Qgis-user] QGIS - value relation widget

[Matthias Kuhn]

Hi Andreas

On 10/02/2015 09:27 AM, Andreas Neumann wrote:
> Hi Matthias,
>
> I was also thinking about that - but would it work also with normal
> value relation widgets instead of relation reference widgets?
They should probably be consolidated at one point in order not to
develop things like this twice.

>
> The option to filter value relation lists, depending on the selection
> of other value relation widgets is probably a quite common request.
> Would be cool if this could be supported in QGIS core.
>
> Andreas
>
> On 02.10.2015 09:24, Matthias Kuhn wrote:
>> Hi Luca
>>
>> Would this core functionality of QGIS be an option for you?
>>
>> https://www.qgis.org/en/site/forusers/visualchangelog210/index.html#feature-filter-chaining-for-relation-reference-widget
>>
>> If you are still required to use python in your forms: are you using
>> global variables? They can be an issue for embedded forms.
>>
>> Cheers,
>> Matthias
>>
>> On 10/02/2015 09:09 AM, Luca Lanteri wrote:
>>> Sadly, after further test I discover that the crashes remain, so I
>>> think it is a qgis bug and not a problem in my code.
>>> The problem happens when I put my custom form into a subform widget
>>> (QgsRelationEditorWidget). If I add a new record in the subform and
>>> I move to another record using the left column QGIS crashes. It
>>> seems to be a more general problem because the crash appears also
>>> when I add some simple control that modify the object in the form.
>>>
>>> I can open a ticket and add some test data.
>>> If it is a minor bug and it could be resolved easily I really offer
>>> a pizza and a beer to resolve it.
>>>
>>> All the best
>>> Luca
>>>
>>>
>>> 2015-10-01 23:53 GMT+02:00 Luca Lanteri <mescal72 at gmail.com
>>> <mailto:mescal72 at gmail.com>>:
>>>
>>>     Hi,
>>>
>>>     now I'm already using the python logic but my code is terrible
>>>     and I have a lot of crash problem.
>>>     Now that I using your example all is easier and seem to worsk fine.
>>>
>>>     I owe you one beer.
>>>     Many many tanks !
>>>
>>>     Luca
>>>
>>>
>>>     2015-10-01 22:23 GMT+02:00 Blumentrath, Stefan
>>>     <Stefan.Blumentrath at nina.no>:
>>>
>>>         Hi Luca,
>>>
>>>          
>>>
>>>         Sounds like a case for Python logic!
>>>
>>>         General principles are explained here:
>>>
>>>         http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/
>>>
>>>          
>>>
>>>         Also nice, and probably exactly what you are looking for:
>>>
>>>         http://medspx.fr/blog/Qgis/cascade_forms/
>>>
>>>          
>>>
>>>         Cheers
>>>
>>>         Stefan
>>>
>>>          
>>>
>>>         *From:*qgis-user-bounces at lists.osgeo.org
>>>         <mailto:qgis-user-bounces at lists.osgeo.org>
>>>         [mailto:qgis-user-bounces at lists.osgeo.org
>>>         <mailto:qgis-user-bounces at lists.osgeo.org>] *On Behalf Of
>>>         *Luca Lanteri
>>>         *Sent:* 1. oktober 2015 22:07
>>>         *To:* qgis-user <Qgis-user at lists.osgeo.org>
>>>         *Subject:* [Qgis-user] QGIS - value relation widget
>>>
>>>          
>>>
>>>         Hi to all,
>>>
>>>         I need to build a form when the value of a combo are
>>>         filtered basing on the value of anoter combobox.
>>>         I have a first combo where I choose the region and a second
>>>         with the municipalities.
>>>         I need that the second combo shows only the municipalities
>>>         of the choosed region.
>>>         I tried to use use the widget "relationship value" with the
>>>         a filter like classe_munic = attribute($currentfeature,
>>>         'classe_munic') without any success.
>>>
>>>         Has anyone ever done something similar?
>>>         Thank in advance
>>>
>>>
>>>         Luca
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Qgis-user mailing list
>>> Qgis-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
>>
>>
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20151002/ce6ca272/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: OpenPGP digital signature
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20151002/ce6ca272/attachment.sig>