[Mapserver-users] Query : No results

Wed Apr 7 13:42:43 PDT 2004

As said by others, you should use the EMPTY object and you can use the
same logic for errors with the ERROR object

WEB
  TEMPLATE 'mapdisplay.html'
  IMAGEPATH 'c:/inetpub/wwwroot/tmp/'
  IMAGEURL '/tmp/'
  ERROR 'error_en.htm'
  EMPTY 'empty_en.htm'
  LOG 'test.log'
END  #WEB

Here's an example of 'empty_en.htm' to go back to the previous page.

<html>
<head>
  <title>StraGisWeb</title>
  <link href="/cgi-bin/default.css" rel="stylesheet" type="text/css"
/>
</head>
</body>
<script type="text/javascript">
  var msgError = 'No results. Try another search.';
  window.document.write(msgError);
  window.alert(msgError);
  history.go(-1);
</script>
</body>
</html>

Same for 'error_en.htm'

<html>
<head>
  <title>StraGisWeb</title>
  <link href="/cgi-bin/default.css" rel="stylesheet" type="text/css"
/>
</head>
<body>
<script type="text/javascript">
  var msgError = 'Unkwn error. The previous page will be shown.';
  window.document.write(msgError);
  window.alert(msgError);
  history.go(-1);
</script>
</body>
</html>

Maybe useful.

Emil

>>> Sebastien Vincent <svincent at idems.fr> 4/7/2004 10:00:21 AM >>>
Hello,

I run mapserv 4.0.1 without any problems.

I put the mapserv form and variables in a frame of my webpage. The 
tools, reference map, scalebar, layers control etc... are in the main 
page. With javascript I change the values of the hidden vars witch are

in the frame and I submit the form. It works pretty fine :)

I can know doing some querys, but when the query have no results, 
mapserv return a page, with only a message saying that there is no 
results. I want to display in this case, another page (saying "In 
French", for my visitors, that the query failed, and reload the map as

it was before the query).

I searched CGI vars, Templates and Map File references. But without 
results, searched also and the mailling list archive without more
results.

This is the reason I'm asking you :/

Thanks in advance if you have any advice for me,

best regards,

seb :)

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