[Qgis-user] QGIS - value relation widget

[Blumentrath, Stefan]

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] 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
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