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List:       mapserver-users
Subject:    [mapserver-users] Re: showing certain classes selected via cgi
From:       Puneet Kishor <punk.kish () gmail ! com>
Date:       2011-10-27 15:43:08
Message-ID: 5FD68740-B38B-432B-87D8-62B2ECD1E03A () gmail ! com
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Gah! nevermind. It was once again my misunderstanding of the docs.


On Oct 27, 2011, at 10:34 AM, Puneet Kishor wrote:

> Seems like I *can* do the following per the docs at \
> http://mapserver.org/cgi/runsub.html (more below) On Oct 27, 2011, at 8:56 AM, \
> Puneet Kishor wrote: 
> > (I thought I had asked this question and received and answer, but can't find it \
> > now... maybe I just dreamed it and never did ask. Here goes...) 
> > 
> > I have a map with a layer with 100s of classes. I want to send a class name via \
> > the URI, and get back a map of only that class. So, the following will return the \
> > map with all the classes 
> > 	http://server/map
> > 
> > and, the following will return the map with only foo and bar classes
> > 
> > 	http://server/map?classes=foo,bar
> > 
> > The above URI pattern is just a suggestion. How can I achieve the above?
> > 
> > One thought comes is to split the layer with 100s of classes into 100s of layers \
> > each with one class. 
> > In any case, what is the advised way forward?
> > 
> > 
> 
> So, I tried the following
> 
> 	CONNECTION "host=localhost port=5432 dbname=macromap user=postgres \
> password=postgres"  CONNECTIONTYPE POSTGIS
> 	PROCESSING "CLOSE_CONNECTION=DEFER"
> 	DATA "the_geom FROM table USING UNIQUE gid USING srid=4326"
> 	FILTER "class_name = '%class%'"
> 
> 	METADATA
> 		'class_name_validation_pattern' '^[A-Za-z]+$'
> 	END
> 
> And, requested the map at http://server/cgi-bin/app?mode=map&layers=layer&class=Foo \
> but got the following error -- 
> 	select "interval_name",encode(ST_AsBinary(ST_Force_2D("the_geoms"),'NDR'),'hex') \
> as geom,  "gid" from table where the_geom && \
> GeomFromText('POLYGON((-180.150250417362 -90,-180.150250417362   \
> 90,180.150250417362 90,180.150250417362 -90,-180.150250417362 -90))',4326) and   \
> (class_name = '%class%') 
> So, %class% didn't get interpolated into the requested value. What am I doing \
> wrong? 
> --
> Puneet Kishor


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