[mapserver-users] Query and template files

[Azimuth, Erwin Perik]

Hi Michel,

Mmm,... coinsidence,.... working on about the same idea as you described ;-)

Relationship is ok. Once you have the correct row you can then use that one 
to search for the shape.

Myself i use PHP mapscript,... where i do it like this:

Search-Field ---> calls a javascript --> pass variables (like the 
search-field) to a popup window.
This popup is a php file which uses the variables bassed by the javascript.

In that popup-php it searches the dbf using standard PHP functions. It then 
returns both fields and values of the found row(s).
These fields are then passed to the popup-page.

It then is possible (you have it's index) to get the shape, create new 
extents, create the image and show it.
Highlighting is still my problem,.... i can only get the complete layer to 
highlight, but as it's zoomed in (shape-extents) it is no real bother.

I do however want to show only the found shape in an overview-map, but not 
found out how yet. Tried numerous, but all failed.
Any help regarding this would be great ;-)

Erwin


At 17:14 21-2-02 -0300, Michel M. dos Santos wrote:


>         Thanks Erwin,
>
>         I have another question:
>
>         I want to do a search, for example, by name of the streets. In my 
> html page
>I put a form for the user write the street he wants to search. The street is
>localized and displayed in the map. I need to search the record in dbf file
>and after in shape file ? I now the relation between dbf file and shape file
>are done by record number, correct ?
>
>[]'s
>Michel M. dos Santos
>
>
>
>Em Qua 20 Fev 2002 05:18, Azimuth, Erwin Perik escreveu:
> > Hi Michel,
> >
> > In the GMAP version the query (by button) is retreiving information
> > according to METADATA set in your layers.
> >
> > Basicly it goes like this:
> >
> >
> > 1) GMap75CheckClick() --> checks user input on the rosa-map, eg zoom-in
> > zoom-out, pan, query.
> > 2) When query button is used and then user clicks on map it uses following:
> >
> > else if ($HTTP_FORM_VARS["CMD"] == "QUERY_POINT")
> >
> > a) here it checks if point or rectangle is used
> > b) pixel-coords are then translated to geo-coords
> > c) query:
> >          * @$gpoMap->queryByPoint($oClickGeo, MS_SINGLE, -1);    <--
> > queries the map (single point)
> >          * @$gpoMap->queryByRect($oGeorefRect);  <-- queries the map
> > (rectangle)
> > d) $gbShowQueryResults = TRUE;  <-- query is used
> > e) it now reloads gmap.php
> > f) in gmap.php you see:   <?php GMapDumpQueryResults(); ?>
> > g) this uses the function GMapDumpQueryResults()
> > h) In your map-file, it checks for the following in every layer:
> >        METADATA
> >          "DESCRIPTION"   "PrintedDescription"
> >          "RESULT_FIELDS" "FIELD ANOTHER_FILED"    # Field names of you
> > .dbf-file
> >        END
> > i) if it finds metadata it passes it to the main file (gmap.php)
> > j) also any found objects are now highlighted in the main map
> > * Every time gmap.php is loaded it uses the function GMapDrawMap() :
> >
> >      if ($gbShowQueryResults)    // <-- found objects, so drawQuery,
> > highlights the objects
> >          $img = $gpoMap->drawQuery();
> >      else                        // <-- nothing found, draw normal map
> > (nothing changes)
> >          $img = $gpoMap->draw();
> > k) General info: certain Variables (like $gpoMap) are set to global to use
> > for other functions
> >
> >
> > You now can add features like:
> > NewExtent --> map zooms in to the rectangle you used for query based on the
> > geo-coords of the rectangle
> >
> > I never got into the CGI stuff cause i loced the combination of Mapscript
> > and Rosa, so sticking with that.
> >
> > Good luck,
> >
> > Erwin
> >
> > At 15:08 19-2-02 -0300, Michel M. dos Santos wrote:
> > >         Hello ,
> > >
> > >         In the example of Itasca , with cgi mode the queries are done by
> > > templates
> > >files. With the example of gmap , with mapscript/php are done other way.
> > > I'm confused with this.
> > >
> > >         Somebody can help me ?
> > >
> > >[]'s
> > >Michel M. dos Santos
> >
> > =================
> > Azimuth Geodetic
> > Koldingweg 8
> > 9723 HK Groningen
> > tel. 050-5493454
> > fax. 050-5497217
> > =================
> > www.azimuth.nl
> > perik at azimuth.nl
> > =================


=================
Azimuth Geodetic
Koldingweg 8
9723 HK Groningen
tel. 050-5493454
fax. 050-5497217
=================
www.azimuth.nl
perik at azimuth.nl
=================