API to get the Map object.

[ismailsunni]

Currently, geonode store map as map model in the django models. The map object contains list of layers in it. There is no API to get this list of layers currently. We need to implement this API to be able to download or add map to QGIS (or another client)

[gubuntu]

Does the model store a list of GeoNode layer names or full WMS urls?

[lucernae]

This is a sample request to:

https://geonode/api/maps

The sample response is:

{
  "geonode_version": "2.7",
  "meta": {
    "limit": 0,
    "offset": 0,
    "total_count": 1
  },
  "objects": [
    {
      "abstract": "test abstract",
      "csw_type": "dataset",
      "csw_wkt_geometry": "POLYGON((-180 -90,-180 90,180 90,180 -90,-180 -90))",
      "date": "2017-05-05T08:07:25.606365",
      "detail_url": "/maps/15",
      "id": 15,
      "layers": [
        {
          "format": null,
          "group": "background",
          "layer_params": "{\"title\": \"OpenMapSurfer Roads\", \"url\": \"http://korona.geog.uni-heidelberg.de/tiles/roads/x={x}&y={y}&z={z}\"}",
          "local": false,
          "name": "OpenMapSurfer_Roads",
          "opacity": 1,
          "ows_url": "http://korona.geog.uni-heidelberg.de/tiles/roads/x={x}&y={y}&z={z}",
          "source_params": "{}",
          "transparent": false,
          "visibility": true
        },
        {
          "format": null,
          "group": "background",
          "layer_params": "{\"title\": \"OpenStreetMap\", \"url\": \"http://{s}.tile.osm.org/{z}/{x}/{y}.png\"}",
          "local": false,
          "name": "osm",
          "opacity": 1,
          "ows_url": "http://{s}.tile.osm.org/{z}/{x}/{y}.png",
          "source_params": "{}",
          "transparent": false,
          "visibility": false
        },
        {
          "format": null,
          "group": null,
          "layer_params": "{\"url\": \"http://192.168.1.20/qgis-server/ows\", \"title\": \"Airports\"}",
          "local": true,
          "name": "geonode:airports",
          "opacity": 1,
          "ows_url": "http://192.168.1.20/qgis-server/ows",
          "source_params": "{}",
          "transparent": false,
          "visibility": true
        },
        {
          "format": null,
          "group": null,
          "layer_params": "{\"url\": \"http://192.168.1.20/qgis-server/ows\", \"title\": \"Roads\"}",
          "local": true,
          "name": "geonode:roads_osm_4326",
          "opacity": 1,
          "ows_url": "http://192.168.1.20/qgis-server/ows",
          "source_params": "{}",
          "transparent": false,
          "visibility": true
        }
      ],
      "popular_count": 0,
      "rating": 0,
      "share_count": 0,
      "srid": "EPSG:4326",
      "supplemental_information": "No information provided",
      "thumbnail_url": "http://192.168.1.20/uploaded/thumbs/layer-c9615f72-3193-11e7-998a-0242ac110008-thumb.png",
      "title": "Test map",
      "uuid": "c9615f72-3193-11e7-998a-0242ac110008"
    }
  ]
}

Geonode only saved ows_url and group in their model. So, you can get layer that is not a background, and use the OWS Url as regular WMS request.

[lucernae]

This is a sample request against that OWS Url:

LAYERS parameter from name key FORMAT image/png

http://192.168.1.20/qgis-server/ows?SERVICE=WMS&REQUEST=GetMap&VERSION=1.1.1&LAYERS=geonode%3Aairports&STYLES=&FORMAT=image%2Fpng&TRANSPARENT=true&HEIGHT=256&WIDTH=256&SRS=EPSG%3A3857&BBOX=11889932.623815736,-694659.7130556834,11892378.608720861,-692213.7281505561

[ismailsunni]

Is there anything else that we need to do for this?