Unable to retrieve perl hash array in callserver

*********************
*********************
Here is the server side code:
*********************
*********************

print qq(
Content-type: text/html\n\n

<script language="javascript">
//Populating an associative array
var arrData = new Array();
var arrCategory = new Array();
var arrFeatures = new Array();
);
foreach my $key1 (keys %modelFeatures)
{
print INLINELOG $key1."\n";
print qq(
arrCategory[$outer] = '$key1';
arrFeatures[$outer] = new Array();
);

my $ref = $modelFeatures{$key1};
for (my $counter=0;$counter<@$ref;$counter++)
{
print qq(document.write("arrFeatures[$outer][$counter] = '@$ref[$counter]'") Smiley Wink

;
print INLINELOG "Array value : ".@$ref[$counter]."\n";
}
$outer++;
}

*********************
*********************
Here is my formapi code:
*********************
*********************
function fnPopulateClient(arrTrim, arrCategory, arrFeatures)
{
IWDatacapture.displayMessage("Back from callserver");
var dropdown = IWDatacapture.getItem('/cntFeaturesPage/optTrim');

for (var i in arrTrim)
{
if (dropdown.getValue() != null)
{
if (dropdown.getOptions()[dropdown.getValue()].value == i)
newOption = new Option(arrTrim, arrTrim, false, true);
else
newOption = new Option(arrTrim, arrTrim, false, false);
} else
{
newOption = new Option(arrTrim, arrTrim, false, false);
}
dropdown.addOption(newOption);

}

for (var iOuter = 0; iOuter {
alert (arrCategory[iOuter]);
alert(arrFeatures[iOuter].length);
}
}

*****************************************************
The length of the array comes as 0 and values are coming as undefined
*****************************************************

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Comments

JoshProx

Code snippet attached with the post....

nipper

I was struggling with the same issue here in the end I just repeatedly sent data back. I was never able to return an array (or a hash) from perl to JS.

JoshProx

I am able to return an array or a hash but the problem comes when I try tro formulate a two dimensional javascript array by reading data from a hash of array pointers....Array length comes as 0 on the client side....

ISCBorisB

I am able to return an array or a hash but the problem comes when I try tro formulate a two dimensional javascript array by reading data from a hash of array pointers....Array length comes as 0 on the client side....

There is a terminological mix-up in this thread verbiage that is typical in other callServer related threads as well.
CGI (Perl, C#, Servlet, whatever) that gets callServer HTTP Request does not *return* anything at all. Rather, it generates html code
to render into the hidden Frame within your DC Form. After that Java Script there may (or may not) be executed, depending on how you set that
Frame code.

So, there are multiple execution threads here two of which we control:

<body onload="parent.getScriptFrame().fnPopulateClient(arrData, arrCategory, arrFeatures)"></body></html>No wonder you've got 0 length, etc...

JoshProx

Thanks for the reply. I have not posted the complete code in here. Let me do that first. I am able to retrieve the values for arrData and arrCategory arrays. arrFeatures is a two dimensional array and returns 0 length. The logic populates the arrays in following manner:

arrCategory[0] = 'Exterior'
arrCategory[1]='Interior'
and so on.....
arrFeatures[0][0] = 'Feature1 a belonging to Exterior category'
arrFeatures[0][1] = 'Feature2 a belonging to Exterior category'
arrFeatures[1][0] = 'Feature1 a belonging to Interior category'
arrFeatures[1][1] = 'Feature2 a belonging to Interior category'
But I get arrFeatures[0].length=0 and so on for all the two dimensional array elements....
The following line does not execute -
print qq(document.write("arrFeatures[$outer][$counter] = '@$ref[$counter]'") Smiley Wink

;

RajatChopra

Thanks for the reply. I have not posted the complete code in here. Let me do that first. I am able to retrieve the values for arrData and arrCategory arrays. arrFeatures is a two dimensional array and returns 0 length. The logic populates the arrays in following manner:

arrCategory[0] = 'Exterior'
arrCategory[1]='Interior'
and so on.....
arrFeatures[0][0] = 'Feature1 a belonging to Exterior category'
arrFeatures[0][1] = 'Feature2 a belonging to Exterior category'
arrFeatures[1][0] = 'Feature1 a belonging to Interior category'
arrFeatures[1][1] = 'Feature2 a belonging to Interior category'
But I get arrFeatures[0].length=0 and so on for all the two dimensional array elements....
The following line does not execute -
print qq(document.write("arrFeatures[$outer][$counter] = '@$ref[$counter]'");

Please put the code into [ html ] [ /html ] tags...

[html]

arrCategory[0] = 'Exterior'
arrCategory[1]='Interior'
and so on.....
arrFeatures[0][0] = 'Feature1 a belonging to Exterior category'
arrFeatures[0][1] = 'Feature2 a belonging to Exterior category'
arrFeatures[1][0] = 'Feature1 a belonging to Interior category'
arrFeatures[1][1] = 'Feature2 a belonging to Interior category'
But I get arrFeatures[0].length=0 and so on for all the two dimensional array elements....
The following line does not execute -
print qq(document.write("arrFeatures[$outer][$counter] = '@$ref[$counter]'") Smiley Wink

;
[/html]

ISCBorisB

But I get arrFeatures[0].length=0 and so on for all the two dimensional array elements...

You've got wrong Declaration for multi-dimensional Array. Try
var arrFeatures = new Array(new Array(), new Array());

The following line does not execute -
print qq(document.write("arrFeatures[$outer][$counter] = '@$ref[$counter]'");

What fails to execute? Perl's 'print' command on the server Side or JS document.write Command on the Client Side?

JoshProx

It still didn't work...I am creating one dimensional arrays now by concatenating string using a separator....

ISCBorisB

It still didn't work...I am creating one dimensional arrays now by concatenating string using a separator....

If you need help - post your code.

If you need an advise - hardcode your Perl's CGI parameters temporarily, run it in the command line mode and
try to render the resulting html with your Browser, see what's wrong with generated JS.

If you just want to commiserate - I hope you'll get it fixed.