[GeoNode-devel] QueryBuilder for Download Layer functionality

[Eugenio Trumpy]

Ho Dimitris and all,

the tool you developed it' really fantastic as well as useful from my point of view.
Your work made me think about a possible tool: it could be nice to have a query builder for the layer to insert in the map composer, just a sort of a layer pre-filter. Moreover I wonder even if having a combo box, including possible values, in the query builder is easy to implement.

This my 2 cents.
Best

Eugenio

Date: Mon, 23 May 2016 17:14:49 +0200
From: karakostis.dimitris at gmail.com
To: pjdufour.dev at gmail.com
Subject: Re: [GeoNode-devel] QueryBuilder for Download Layer functionality
CC: geonode-devel at lists.osgeo.org


Hi guys, 
I have deployed the newly developed  'Query Builder and Map Filter' tool in our staging server for WFP Geonode: http://staging.geonode.wfp.org/layers/   There are still several features to be added but you can have a look and give some recommendations, improvement ideas etc.To use the tool, select a layer, click the Download button and then the Layer Filtering.
CheersDimitris


On Mon, May 16, 2016 at 9:09 PM, Patrick Dufour <pjdufour.dev at gmail.com> wrote:
Yes, I can help with the GNIP when ready.
The implementation will leverage the cql_filter GeoServer WFS querystring parameter, as such no changes to GeoServer or django DB models are needed.
Regards,

Patrick Dufour
On May 16, 2016 6:11 PM, "Jeffrey Johnson" <ortelius at gmail.com> wrote:
This is really awesome!



Can you file a GNIP for this so we can discuss the implementation as a

group? If you need help with that, let us know. You will need a core

committer to actually file the GNIP. Perhaps Patrick can help?



Looking forward to seeing/using this!



Jeff



On Mon, May 16, 2016 at 2:34 AM, Dimitris Karakostis

<karakostis.dimitris at gmail.com> wrote:

>

>

> Hello guys,

>

> How are you doing? I wanted to share with you our current development

> plans/progress for WFPGeonode. During the last week I have been working on

> the implementation of a 'Query Builder' functionality in order to be able to

> download specific parts of layers in the provided formats (kml, xls, csv,

> zipped shape, geojson).

>

> The user can build the query by :

> 1. selecting from a dropdown menu the available attributes,

> 2. selecting an operator,

> 3. enter a valid value

>

> The different statements of the query can be combined either with AND or OR

> operator. I have also used the OWSLib (0.11.0; thanks Tom)  in order to get

> the type of attributes and apply some sort of validation (e.g. if you try to

> put a string, while number is expected then you get an error message).

>

> For the above process I have used JQuery for the JS functionality and

> BootstrapCSS for the gui. The tool is part of the 'Download Layer' modal and

> is currently being tested and making small fixes.

>

> The next step will be to build a map tool, which you will select the area of

> interest (rectangle tool; bounding box etc.) and download it.

>

> I attach some screenshots of the two tools.  If you have any

> ideas/advice/comments please let me know. They are most welcome!

>

> Cheers

> Dimitris

>

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>

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