[OpenLayers-Users] Changing map file FILTER parameter via URL -
WFS layer with OVF connection
Bart van den Eijnden (OSGIS)
bartvde at osgis.nl
Fri Feb 16 10:55:01 EST 2007
Hi,
you need to use the FILTER parameter from the OGC WFS spec to do this, check
this for more info:
http://mapserver.gis.umn.edu/docs/howto/filterencoding/
then you need to call mergeNewParams on your OpenLayers layer:
var filter = '<Filter><PropertyIsEqualTo><PropertyName>USER</PropertyName>
<Literal>Peter</Literal></PropertyIsEqualTo></Filter>';
mylayer.mergeNewParams({"filter":filter});
Best regards,
Bart
--
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl
--------- Oorspronkelijk bericht --------
Van: Pedrazzi Gelsomini <pedrazzi.gelsomini at gmail.com>
Naar: users at openlayers.org <users at openlayers.org>
Onderwerp: [OpenLayers-Users] Changing map file FILTER parameter via URL -
WFS layer with OVF connection
Datum: 16/02/07 13:02
> Hi everyone,I m using openlayers for my application and I have a WFS layer
filled by my mysql database using mapserver.My layer inizialitazion is:
> var user_wfs = new OpenLayers.Layer.WFS( "User Points",
>
>
"http://localhost/cgi-bin/mapserv?map=/var/www/thesilence/webroot/mapserver/config/data_points.map&
> ",
>
> {typename:
"points"}, { featureClass: OpenLayers.Feature.WFS});
>
> In my file.map i have the following layer:LAYER
CONNECTION "my_points.ovf" CONNECTIONTYPE
OGR DATA "points" METADATA
"wms_srs"
"EPSG:4326"
>
"wms_title" "points"
"wfs_srs"
"EPSG:4326"
"wfs_title" "points"
"gml_featureid"
"fid"
> "gml_include_items"
"all" END NAME
"points" SIZEUNITS PIXELS
STATUS ON DUMP TRUE
PROJECTION
"init=epsg:4326" END
> TOLERANCE 20 TOLERANCEUNITS
PIXELS TYPE POINT UNITS
METERS FILTERITEM
"user_id" #FILTER ""where
my_points.ovf is:<OGRVRTDataSource>
> <OGRVRTLayer
name="points">
<SrcDataSource>ODBC:myuser/mypsw at mydns</SrcDataSource>
<SrcSQL> SELECT data_points.id AS
fid, latitude, longitude, des_walks.com_user_id AS user_id
> FROM data_points JOIN
des_walks WHERE des_walks.id =
data_points.des_walk_id </SrcSQL>
<GeometryType>wkbPoint</GeometryType>
<LayerSRS>WGS84</LayerSRS>
> <GeometryField
encoding="PointFromColumns" x="longitude"
y="latitude"/>
</OGRVRTLayer></OGRVRTDataSource>but I need to change the value
of the FILTER parameter in the map file via URL.
>
> The connection with database works and allows me to put my points on my
map.I would like to filter these data by "user_id" and show only
the data linked to a specific user, but i have to pass this parameter via
url because it is not always the same.
>
> Now i m passing just the typename in the openlayers function, but i dont
know how to change the FILTER parameter in my map file.
FILTERITEM "user_id"
> #FILTER ""Any suggestion?Thank you very much!
>
>
>
>
>
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