here's an example from your openlayers download, modify your version to point to your server, etc http://openlayers.org/dev/examples/getfeatureinfo.html
there's a nice "cookbook" for serving WMS data on the OneGeology website: http://www.onegeology.org/misc/downloads.html and here's a relevant section from one of my mapfiles below. It should work just fine with a postgis connection instead of shapefile, as I am using HTH, Percy ------------mapfile stuff------------- LAYER NAME "Geologic_Map_Of_North_America" TYPE polygon STATUS On data GMNA_South_Union_wgs84 TOLERANCE 0 TOLERANCEUNITS pixels TRANSFORM TRUE DUMP TRUE HEADER "templates/GMNA_query_header.html" TEMPLATE "templates/GMNA_query_body.html" FOOTER "templates/GMNA_query_footer.html" Metadata "WMS_TITLE" "Geologic Map Of North America" "WMS_SRS" "epsg:4326" GML_INCLUDE_ITEMS "DisplayNam,OneGeology,Lithologic,GeologicAg,AgeMin,AgeMax,AgeMetadat" WMS_INCLUDE_ITEMS "DisplayNam,OneGeology,Lithologic,GeologicAg,AgeMin,AgeMax,AgeMetadat" END # metadata END #layer -------------------end of mapfile stuff----------- Yves Moisan wrote: > Hi All, > > Audience of this message : users of MapServer (WMS). > > I'm trying to find examples of how to retrieve attributes from a postgis > table served via MapServer WMS. I have my points in OL, now I want and > "info" on them. I understand I have to enable the layer to be queryable > in my mapfile. So I googled and found a top level directive (QUERY \n > STATUS ON), but that was found to be an offending command. I also found > a bunch of other directives, so my mapfile now looks like this : > > METADATA > # OGC:WMS specific tags > "ows_title" "Resettlement Sites" > "ows_abstract" "RAP Resettlement Sites" > "ows_keywordlist" "Resettlement, TFM" > "ows_srs" "EPSG:32735" > "wms_opaque" "0" > "wms_group_title" "Data" > "wms_group_abstract" Data" > "wms_dataurl_href" "http://someserver:8081/data/"; > "wms_dataurl_format" "text/html" > "ows_metadataurl_type" "FGDC" > "ows_metadataurl_href" > "http://someserver:8081/ms_ogc_workshop/index.html"; > "ows_metadataurl_format" "text/html" > "ows_extent" "389443 8816705 442791 8858984" > > # OGC:WFS specific tags > > # /WFS_Capabilities/FeatureTypeList/FeatureType[*]/MetadataURL/@format > "wfs_metadataurl_format" "TXT" > # specify which fields to include when returning queries > "gml_include_items" "all" > > The mapfile top level projection is set to 900913 and that gets > translated fine overtop of a Google base layer. > > On the OL side, I found some InfoButton code which I think I have > adapted correctly for my layer. I don't see anything when I click on my > map. I'm obviously missing something and I won't go into the details, > but rather I will just ask for pointers to example MapServer served WMS > layers that are queryable through OL (that is, one clicks and some div > gets populated with attribute content or better some popup appears) > showing all settings. I am a bit flabergasted by the number of moving > parts. > > Just for the sake of it, I extracted my data and turned it into a > textfile which I then used in OpenLayers.Layer.Text (as per > http://wiki.openstreetmap.org/index.php/Openlayers_POI_layer_example). > OOTB, one gets a nice popup, default icon and default html formatting. > I wonder if one could get as easy a popup solution for a WMS served > queryable layer ? I wouldn't be so crazy as to generate a textfile on > the fly to duplicate my layer so that it becomes easily queryable ... > > Thanx for pointers, > > Yves Moisan > > _______________________________________________ > Users mailing list > [email protected] > http://openlayers.org/mailman/listinfo/users > -- David Percy Geospatial Data Manager Geology Department Portland State University http://gisgeek.pdx.edu 503-725-3373 _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
