Query Relationships Problem

Question

Howdy folks, Having trouble conducting a spatial query where a county is clicked and adjacent counties are also selected through the SPATIAL_REL_TOUCHES query. I basically copied the code found in the esri query adjacent polygon sample, but used different layers to query. I'm thinking the problem has to do with either the proxy page reference (line 62-63) or the feature geometry reference (line 90). Any ideas? Thanks in advance! -David Code below: Full Map Layout

JohnGravois · Answer

esriConfig.defaults.io.proxyUrl = "/arcgisserver/apis/javascript/proxy/proxy.ashx";

i think youre probably on the right track regarding the proxy. the line of code above is looking in a location relative to the web application on the same server, but I recognize it as the location of the proxy in use for our published applications.

example:http://[servername.domain.com]/webapplication.html
[servername.domain.com]/arcgisserver/apis/javascript/proxy/proxy.ashx

see the following article for more information about installing/configuring proxies and the situations in which they are required:
http://help.arcgis.com/en/webapi/javascript/arcgis/help/jshelp/ags_proxy.htm

StephenLead · Answer

Hi David,

Welcome to the forums! It'll be easier to get help if you can do a couple of things:

- when you post a code sample, use the # option at the top right of the editor page. Otherwise, the formatting is stripped off, making the code much harder to read at a glance.

- install Firefox and the Firebug debug tools. These will let you step through your running code, and pinpoint exactly where the problem lies.[LEFT]I'm thinking the problem has to do with either the proxy page reference (line 62-63) or the feature geometry reference (line 90).

So you could try putting a breakpoint just before those lines (eg, break on the line "firstGraphic = graphics.features[0];" and ensure that you have a valid pointer to firstGraphic).

Then step through your code, to see if that is indeed the error. Once you know that, it'll be a lot easier to debug, for everyone involved.

Cheers,
Steve[/LEFT]