[mapserver-users] Layer status on/off

[nikos at maich.gr]

Hi,

Would like to be able to display a layer, after a join w/ an external table.
My definition is below....
Is this the approach? Using cgi and intend to toggle the layer on/off w/ a
status parameter.
Is this the usual approach, any better way to do this?

I also need to display the layer in general (with out the class), along
with other layers...

If I'm able to toggle a class, I guess I could define define another
class, e.g.  "gid>0" to display the geom????

would appreciate some help....

regards,
nikos

pS just saw that there's a status for class objects....

STATUS [on|off]
    Sets the current display status of the class. Default turns the class on.


##### 2 Layer Energy crop yield
    LAYER
      METADATA
          'qstring_validation_pattern'    '.'
   END
    NAME "yield"
    CONNECTIONTYPE postgis
    CONNECTION "dbname=IUNG user=postgres host=localhost password=xxxx1 "
     DATA "the_geom FROM (SELECT landunit_karditsa.gid AS gid, 
landunit_karditsa.the_geom AS the_geom,
        perclu.cotton as cotton,  perclu.encrop as encrop
FROM landunit_karditsa JOIN perclu ON
        landunit_karditsa.gid = perclu.objectid)
        AS nikos_join USING UNIQUE gid USING SRID=-1"

    STATUS OFF
    TYPE POLYGON
    CLASSITEM 'cyna'
    CLASS
        NAME "cynara_crop"
        EXPRESSION ('[cyna]' == 0)
        STYLE
           backgroundcolor 0 128 128
            OUTLINECOLOR 204 153 51
            color 255 0 0
            WIDTH 3
        END
    END

END
####End yield