Django WMS Browser
Context: In the interest of improving compatibility with existing infrastructure, GeoNode should allow "adding" or "subscribing" to a 3rd-party WMS service and providing a browser-accessible and human-readable presentation of the layers presented. As a first step toward that goal, is to create a standalone app/service to translate WMS Capabilities to HTML.
Details:
Configuration: An administrator should need only to provide the URL to a WMS service or Capabilities document and allow the rest to be inferred from data available via OGC web services.
Presentation:
* The index page for the site will be a listing of all known layers, with appropriate navigation aids.
* Clicking on a layer link from the index page brings up a 'detail' page for the layer, presenting the layer's title and other metadata, as well as an interactive ('slippy') map to allow browsing through the contents of each layer.
* For non-raster layers, users should also be able to explore the attribute data associated with the geometries in a table.
* Each layer should include instructions (code templates etc.) for integrating the layer into other services such as OpenLayers maps.
Prerequisites:
* GeoDjango http://code.djangoproject.com/wiki/GeoDjango
* Spatial Database (tested with PostgreSQL + PostGIS, assumed, but not tested, to work with MySQL and Oracle Spatial)
* OWSLib http://trac.gispython.org/lab/wiki/OwsLib (using forked version wiht improvements here https://github.com/ortelius/OWSLib)
* BeautifulSoup http://www.crummy.com/software/BeautifulSoup/
* olwidget http://github.com/yourcelf/olwidget
General TODO: (in Priority Order)
Implement Basic Doctests Tests for Model Functions
Implement Unit Tests for Model Functions
-WmsEndpoint.parse_save_wms_url
WmsEndpoint.parse_save_output_formats
WmsEndpoint.parse_save_capabilities
WmsEndpoint.parse_save_wms_layers
WmsLayer.generate_preview_image
WmsLayer.parse_save_styles
WmsLayer.generate_preview_image
WmsLayer.retrieve_layer_attributes
WmsLayer.valid_latlon_bbox
WmsLayer.parse_save_layer_attribution
WmsLayer.parse_save_style
-Implement index view in wmsb.views
-Implement index template
-List all exiting layers -> Link to WmsLayer info view
-Navigation/Paging
Form to add new endpoint/server (single form field for url)
-Implement Endpoint/Server listing view in wmsb.views
-Implement Endpont/Server listing template
-List of all exisitng Endpoint/Servers -> Link to WmsEndpoint info view
-Navigation/Paging
Form to add new endpoint/server (single form field for url)
-Implement WmsEndpoint info/detail view in wmsb.views
-List all layers for Endpoint/Server
OL Map with footprints for each layer?
-Implement WmsLayer info/detail view in wmsb.views
-Implement WmsLayer template
List all layer metadata
-List Layer Attributes (if available) in table.
-OL Map with WMS Layer
Code Templaes for embedding
OpenLayers
Google Maps
Google Earth/KML?
Implement Endpoint/Server/Layer search
Keyword/Full Text
By BBOX
Customize Admin for WmsLayer to include WMS in OL Map
Modify olwidget to work in 4326 (several tested WMS Servers do not support 900913)