[mapserver-users] Using a variable as a CLASSITEM

[Theobald, Charles]

Is it still possible to use a variable for the value of CLASSITEM?  We're passing the field name to be used in the CLASSes  in the URL as a variable (%dmmethod%):

    CLASSITEM  '%dmmethod%'
    FILTER ('[type]'='County')
    STATUS on
    CLASS
      NAME 'No Drought'
      EXPRESSION ('[%dmmethod%]'='-1')
      STYLE 
        COLOR           255 255 255       
        OUTLINECOLOR    20 20 20
      END
    END  
This used to work in previous versions.  There are 6 different fields that could be searched, for 6 possible values.  I'd really like to avoid creating 36 classes for each layer that uses this attribute table.  I am including dmmethod in a validation block in each layer trying to use this variable.  Mapserver version is 6.0.3

Any suggestions would be greatly appreciated.

Thank you.


Charles Theobald
NC Division of Water Resources
charles.theobald at ncdenr.gov
919-707-9136
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