[QGIS-Developer] [Qgis-developer] QGIS <-> Django

Sat Oct 6 08:31:51 PDT 2018

Hi All,

at GIS3W we developed a suite based on Django for QGIS server [1], the 
code in Open and on Github [2] (main app is G3W-ADMIN).

The suite parse QGIS project file(at the moment is only for QGIS 2.18) 
and stores layer data in to db, alse connection string informations. 
With the layer connection we build a Django model on fly for to get data 
directly from db ora to write on it.

We developed a 'editing' module but for now is not open, but the core 
for build Django model on fly is in the open code [3].

The suite comunicates with Webgis Client (G3W-CLIENT) with custom api 
built with Django Rest Framework.

I hope this can be usefull.

I'm thinking again on django model on fly worflow and his memory 
implication, comments and suggestions are welcome.

Have a good weekend.

Ciao

W

[1] https://g3wsuite.gis3w.it/

[2] https://github.com/g3w-suite

[3] 
https://github.com/g3w-suite/g3w-admin/blob/master/g3w-admin/core/utils/models.py

Il 05/10/2018 22:54, Olivier Dalang ha scritto:
> Hi Radim,
>
> I didn't get this sorted in the end (ended just having the layer as 
> read only in QGIS from postgis and users would do any modification 
> from django admin).
>
> About a Django provider for QGIS : it is now possible to create python 
> providers [1]. So creating a REST provider to consume a django rest 
> framework endpoint may not be that hard anymore ? That would certainly 
> be a great addition to QGIS !!
>
> And about a WFS-T app for Django : I don't know of any other effort 
> than django-wfs, but I just saw there's an open PR with some a lot of 
> changed including python 3 support, so maybe django-wfs is not as dead 
> as it looks ? Still WFS-T would have to be added, and again not sure 
> how hard this would be...
>
> Let us know how it goes !
>
> Cheers,
>
> Olivier
>
> [1] https://github.com/qgis/QGIS/pull/7012
>
>
>
> On Sat, Oct 6, 2018 at 4:24 AM Radim Blazek <radim.blazek at gmail.com 
> <mailto:radim.blazek at gmail.com>> wrote:
>
>     Hi,
>     we need the same, to be precise, we need two things, to allow editing
>     of data stored in Django/PostGIS in QGIS over the network and let QGIS
>     Server (WMS) to read data from Django, both using Django filters etc.
>     If we manage to get data to QGIS from Django (and back), we can use
>     QGIS Server and WFS-T for editing. So I am looking for something like
>     Django provider for QGIS or WFS-T application for Django. Are you
>     aware of something like that?
>
>     Olivier, what have you used in the end? [1] is not maintained and it
>     does not support WFS-T.
>
>     Alessandro, in [2] I am missing data reading from Django models. It
>     seems like the server is launched from python, but data flow goes
>     through standard QGIS providers?
>
>     Marco, if I got it looking briefly into GeoNode code, they just run
>     QGIS server, but they don't read data directly from Django models,
>     right?
>
>     [1] https://github.com/vascop/django-wfs
>     [2] http://www.itopen.it/qgis-server-binding-news/lang-pref/en/
>
>     Radim
>
>     On Fri, Mar 24, 2017 at 1:56 PM Marco Bernasocchi
>     <marco at opengis.ch <mailto:marco at opengis.ch>> wrote:
>     >
>     > Hi Olivier
>     > Kartoza has been working on having geonode server running
>     smoothly using
>     > a qgis server in the background.
>     >
>     > have a look at
>     > https://www.youtube.com/watch?v=GzX4byPkV3E
>     >
>     http://osgeo-org.1560.x6.nabble.com/New-Geonode-GeoSAFE-and-QGIS-work-td5303864.html
>     >
>     > cheers
>     > Marco
>     >
>     > On 24.03.2017 13:10, Olivier Dalang wrote:
>     > > Dear List,
>     > >
>     > > Does anybody here have some experience with making QGIS work with
>     > > (Geo)Django ?
>     > >
>     > > I would love to be able to make them communicate, as QGIS is the
>     > > interface of choice to do complex work on geometries and Django is
>     > > perfect to quickly setup a complete endpoint with user
>     management, model
>     > > logic and web administration interface.
>     > >
>     > > I see two approches :
>     > > - Using Django REST framework to create a REST endpoint - but
>     is there a
>     > > way to consume REST endpoints in QGIS ?
>     > > - Developing a WFST module for Django, for which there seem to
>     be some
>     > > work done [1] for the non-transactionnal part.
>     > >
>     > > I just wanted to ask before reinventing the wheel !
>     > >
>     > > Bests,
>     > >
>     > > Olivier
>
>
>
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Walter Lorenzetti phD
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