Passing parameters to Call Server

Hi All,

I have looked various thread on the same topic, but my questions is not answered in any of them. My requirement is I want to populate the drop B based on drop A. I read manual and I am using the userscirpt example, I have only two items in my DCT and when I want to call the perl program I want to pass three values, drop A select item, drop down B value and also the how many items are selected for drop A. I am setting the value as shown below, but for some reason the perl program is not getting the value. Your help is appreciated.

DCT :

function fetchLocations(item, defaultCity) {
var params = new Object();
var myOptions = item.getOptions();
var myValues = item.getValue();
var len = myValues.length;

var regionArr = new Array();

var i=0;
len--;

for(i=0;i<=len;i++) {
regionArr = myOptions[myValues].value;
}

var lenValue = regionArr.length;

params.region = myOptions[parseInt(item.getValue())].value;
params.defaultCity = defaultCity;
params.len= lenValue;

alert (params.region);
alert (params.len);

//alert the user that an external call is being made.
IWDatacapture.displayMessage("Retrieving locations in " +
myOptions[parseInt(item.getValue())].text + "...");
top.hiddenFrameRunning = true;

var server = window.location.hostname;

IWDatacapture.callServer("http://"+server+"/iw-bin/getLocations.ipl",
params);
}

and in getLocation.ipl,
use CGI;

#Turn buffering off.
$| = 1;

my $in = new CGI;

@name = $in->param;

my $region = $in->param('region');
my $city = $in->param('defaultCity');
my $tmp_length = $in->param('len');

I am getting blank space for length. Please help me.

Thanks!

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Comments

jbonifaci

From what I can tell, it looks like you're passing the parameters correctly. I'm assuming that your alert of params.len is showing up correctly? Also, is it only the "len" parameter you are having problems with?

~Jeff

ISCBorisB

You are trying to pass 32 bit signed integer from JS to your Server side script.
Just convert it to String.

params.len = String(lenValue);

rrose

Yes you are correct Jeff, the alert is showing up correct value, but the parameters is not passed to ipl, I just tried changing the region name to something else like kite, it is not working at all. How is this script controlling the names of parameters, is it by form values.

Thanks for your response.

rrose

Thanks for your reply. Once I convert the value to string, it worked. Thanks once again Smiley Happy

rrose

Hi All,

I am having some problem related the above script and template. I am able to view the dynamically poupulated fields when I create a new template or edit a template but when I preview the data record that is created, I am seeing only the value selected in my dynamic drop down box. Is this how it behaves or do I need to configure something on preview side.

For Example, if my drop down dynamically populated 4 values in drop down and while creating a new record, if I select the second option, then preview is showind only second option value(not description), not all the four options.

Thanks in advance.

jbonifaci

FormAPI is only executed when in edit mode, never in view mode. So what you're seeing is what is expected and there is no configuration setting you're missing.

~Jeff

rrose

Thanks for your reply Jeff.I am noticing that if I reopen the data record to edit, I am not seeing the value I selected as my option for the drop down(in this case option 2), it is reinitializing to default select value(option 1). Again is this an expected behaviour or can we write some logic to fix the problem.

Thanks Once again.

jbonifaci

You're going to have to modify your funcion that is populating the values to check for existing values and re-select those after you populate it with all of the values.

~Jeff