[GeoNode-devel] QGIS <-> GeoNode Integration

[Tim Sutton]

Hi All

I just wanted to show you some of the work we have been doing to integrate QGIS Desktop and GeoNode. I made a little video which illustrates it here:

https://www.youtube.com/watch?v=z0WYsEUNmg4

This work was funded by WorldBank  / GFDRR. We expect to make a pull request against QGIS to merge this work next week some time.

There have been previous attempts to integrate GeoNode support into QGIS but ours is a bit different as it is implemented in C++ and will be 'native' / baked in code that every QGIS user can make use of without needing to install any plugins etc. We will also create python bindings for the helper classes so that you can use the GeoNode backend logic in your own QGIS plugins if you want to without re-inventing the wheel.

My colleague, Gavin, has previously written to this list to provide a broad outline of our work plans. One of the pain points we have had while working on this functionality is the GeoNode API. Our implementation basically consisted of hopping around between the GeoNode API and GeoNode's CSW instance. This diagram summarizes the process we follow:

https://files.gitter.im/kartoza/kartoza/ucRq/GeoNodeArchitecture.png

We had to do a lot of hoop jumping to get valid layer end points and we would like to implement some changes to the API to make it less of a pain. Our first tentative doodling on how the API can be improved are here:

https://files.gitter.im/kartoza/kartoza/YxLa/GeoNodeArchitecture-API.png

We would make any changes as non breaking changes (unless people are using really crapping parsing techniques to pull data out of the API responses) - adding to some existing responses, and adding new API end points to support pushing and pulling styles and so on. I expect we will add more to the above diagram, consider it a first draft only. Is anyone else working on things that might affect the API / planning changes to the API? If so could we collaborate with you so that we can see what is coming down the line? Our work will probably be split between:

a) a few specific changes we need to execute our work.
b) a proposal of what other things might be improved in the API for future

I look forward to hearing from anyone else who is interested in QGIS / GeoNode integration and GeoNode API improvements.

Regards

Tim



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Tim Sutton

Co-founder: Kartoza
Project chair: QGIS.org

Visit http://kartoza.com <http://kartoza.com/> to find out about open source:

Desktop GIS programming services
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GIS Training
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Skype: timlinux
IRC: timlinux on #qgis at freenode.net

Kartoza is a merger between Linfiniti and Afrispatial

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