Using CGI variables in map files

[Chip Taylor]

The documentation of Mapserver says this:

Variables can be substituted within MapFile parameter values. At this time,
cookie and CGI parameter values are supported. This allows MapServer
MapFiles to be aware of a user's cookies (good for implementing security),
or non-MapServer request parameters (good for integrating with other
systems).

	Syntax: '%' + variable name + '%'

But the examples are not clear.  If I want to pass in a CGI variable, such
as [mapx] and [mapy], into a data statement to select from a postGIS
database; such as:

CONNECTIONTYPE postgis

  CONNECTION "user=auser dbname=mydb host=myserver"

  STATUS ON

  DATA "counties from states where thislon = %mapx% and thislat = %mapy%"

Does not seem to work.  Help?


Chip Taylor

Prepared Response, Inc. 
1127 Broadway Plaza, Suite 204
Tacoma, WA  98402
O 253.272.1730
M 253.948.2525

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