[mapserver-users] Show only one POI on the map

[Tamas Szekeres]

Valerio,

It`s somewhat application dependent how you preserve the client state
and mostly out of scope for the mapserver CGI app. You could probably
use some scripting at the server or the client side to store the state
between the subsequent requests. To achieve a higher level of
customization you could use MapScript at the server side.

Best regards,

Tamas


2008/6/17 valerio vianello <valerio.vianello at yahoo.it>:
> Hi Tomas,
>
> I have found a first solution to my problem.
>
> I used the cookies to store the variable value end I update the cookie value
> only when the variable change.
>
> and then in a javascript I update the value of the post field before submit
> the page.
>
> I'm searching for other solution that don't use cookies...
>
> thanks
> Valerio
>
> --- Mar 17/6/08, valerio vianello <valerio.vianello at yahoo.it> ha scritto:
>
> Da: valerio vianello <valerio.vianello at yahoo.it>
> Oggetto: Re: [mapserver-users] Show only one POI on the map
> A: "Tamas Szekeres" <szekerest at gmail.com>
> Cc: "mapserver" <mapserver-users at lists.osgeo.org>
> Data: Martedì 17 giugno 2008, 08:04
>
> Hi Tomas,
>
> My demo is on my local machine for now...but I will show you part of the map
> file and template file.
>
> this is the layer in which i use the variable the map file is called
> "map1.map"
> # Start of LAYER DEFINITIONS ---------------------------------------------
>   LAYER  #show single poi
>     NAME         floor_1_Show_Pois
>     DATA        POIs
>     STATUS       OFF
>     TYPE         POINT
>     CLASSITEM "country"
>     FILTERITEM 'floor'
>     FILTER 'f.1'
>     LABELITEM "name"
>     TOLERANCE 7
>
>     CLASS
>       NAME       'single_poi'
>       EXPRESSION '%ccountry%'
>       TEMPLATE '../templates/pois.html'
>       STYLE
>       COLOR        0 0 0
>           SYMBOL '../symbols/flag_blue.gif'
>       END
>       LABEL
>         COLOR 0 0 0
>        TYPE BITMAP
>         SIZE MEDIUM
>         ANTIALIAS TRUE
>         POSITION LC
>         FORCE TRUE
>         PARTIALS FALSE
>         BUFFER 4
>       END # end of label
>     END #CLASS
>   END #  layer Pois with label
> #end ---------------------------------------------
>
> when I click on same point in the map using mapserver query mode a new page
> is loaded where there is this link to reload the same map file to show only
> one pois:
>
> <a href="/cgi-bin/mapserv50?map=/var/www/map1.map&layers=floor_1
> floor_1_Show_Pois&ccountry=[country]&imgext=[state]&imgxy=[center]">Show on
> Section </a>
>
> the page is loaded correct but if I try for example to query to poi I have
> non response or if I zoom in or zoom out into the map the poi disappears.
>
> I tried to use the field in the template
> <input type="hidden" neme="ccountry" value="[ccountry]">
> but the value of [ccountry is replaced only the first time with the correct
> value then its value become the string "[ccountry]"...
>
> any suggestions ?
>
> best regards
> Valerio
>
>
>
>
> --- Lun 16/6/08, Tamas Szekeres <szekerest at gmail.com> ha scritto:
>
> Da: Tamas Szekeres <szekerest at gmail.com>
> Oggetto: Re: [mapserver-users] Show only one POI on the map
> A: valerio.vianello at yahoo.it
> Cc: "mapserver" <mapserver-users at lists.osgeo.org>
> Data: Lunedì 16 giugno 2008, 20:03
>
> Valerio,
>
> I don`t think if anything is preserved across the subsequent requests
> in the cgi mapserver so you might have to apply the substitution on
> each request.
> However I`m not sure I could catch the problem exactly, do you have
> mapfile/URL examples?
>
> Best regards,
>
> Tamas
>
>
> 2008/6/16 valerio vianello <valerio.vianello at yahoo.it>:
>> Hi Tamas,
>>
>> I have a bit issue
>
>  ...
>> Do you know how lock the variable value until the next changing ?
>>
>> Now I am able to show only one poi in the map but if I try to query it I
>> have no results as response. I have done a lot of test and I think the
>> problem is on variable value. after the page is loaded the value of
>> parameter
>> (EXPRESSION '%ccountry%' ) in  the map file lose its past value
> and so the
>> mapserver cgi haven't reference to it anymore.
>>
>> any suggestion ?
>>
>> Best regards
>> Valerio.
>>
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