[mapserver-users] How to Turn off a Layer when other specific Layer is ON in a map file ?

[Jeff McKenna]

Indeed I think my testing was wrong, as mode=map and layers= was 
overriding the REQUIRES parameter, as I see that in msautotest things 
are working with shp2img.  So, maybe I should not have sent these 
messages ha.

-jeff



On 2021-11-23 5:42 p.m., Rahkonen Jukka (MML) wrote:
> Hi Jeff,
> 
> I know REQUIRES has worked in a positive way (show copyright when a layer is on) because I have used that feature but I do not admin that service any more and I can't check the details. Probably I used version 6.x then.
> 
> -Jukka Rahkonen-
> 
> -----Alkuperäinen viesti-----
> Lähettäjä: MapServer-users <mapserver-users-bounces at lists.osgeo.org> Puolesta Jeff McKenna
> Lähetetty: tiistai 23. marraskuuta 2021 23.35
> Vastaanottaja: mapserver-users at lists.osgeo.org
> Aihe: Re: [mapserver-users] How to Turn off a Layer when other specific Layer is ON in a map file ?
> 
> To give a more detailed example of what *should* work:
> 
>     LAYER
>       ..
>       REQUIRES "![modis] OR ![someotherlayername]"
>     END
> 
> I'll continue my 8.0-dev testing...
> 
> 
> -jeff
> 
> 
> 
> --
> Jeff McKenna
> GatewayGeo: Developers of MS4W, MapServer Consulting and Training co-founder of FOSS4G http://gatewaygeo.com/
> 
> 
> On 2021-11-23 5:29 p.m., Jeff McKenna wrote:
>> Hi Carlos,
>>
>> I had a great answer drafted for you, tooting my own horn on the recent
>> MapServer tutorial updates for MapServer 8.x, and the demo server
>> updates...as by chance the tutorial mentions that the parameter
>> "REQUIRES" at the LAYER level should do exactly what you need, super :
>> but sadly my tests now fail with MapServer 8.0-dev, I cannot get
>> REQUIRES to work, such as:
>>
>>     LAYER
>>      ..
>>      REQUIRES "![modis]"
>>     END
>>
>>    where modis is another layer name.
>>
>> Since I hadn't been testing this feature, and it is only briefly
>> mentioned in the tutorial (and not part of the live demo), I have no way
>> of saying when this should have worked, for what MapServer version.  It
>> is part of the tutorial mapfiles, but the functionality is not working,
>> for my local tests.
>>
>> But your question has made me see more room for improvement in the
>> tutorial, and its mapfiles, so your question has helped.
>>
>> Sorry for my non-news, ha.
>>
>> I'll do more testing on this feature and report back.
>>
>> -jeff
>>
>>
>>
> 
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-- 
Jeff McKenna
GatewayGeo: Developers of MS4W, MapServer Consulting and Training
co-founder of FOSS4G
http://gatewaygeo.com/