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Passing data from callserver to FormAPI

nipper

SO I have a callserver set up. It generates some information (names of DCRs and locations without workarea). and passes it back to FormAPI with onload="javascript&colon;parent.getScriptFrame().$callBackFunction('$names','$location')" inside HTML and BODY tags.

$names = "One | Two | Three" etc and $location is the same.

The problem is that when there are too many to long (2080 char fails but hundreds of characters works). I figure I need to be able to pass about 16K or so.

What is a better approach ? I assume i am hitting an issue with GET/POST.

Tips/Pointers/RTFMs appreciated.

Andy

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ISCBorisB

What is a better approach ? I assume i am hitting an issue with GET/POST

Doubt it. With the callServer GET vs POST is only an issue of the Server request (forward Leg). After that your Server-generated
code simply renders into DCT Form's hidden frame. All JS is executed from there. What is the problem manifestation? I wonder
if you are hitting JS String Object size limit...

nipper

I get this as a JS error:

A Runtime Error has occurred.
Do you wish to Debug
Line:1
Error Expected ')'

When I open it up in a debugger, I get the onload statement:

<body onload="javascript&colon;parent.getScriptFrame().setHotelListFromMain('10 K characters')">

There are no apostrophes, quotes or parens in the data I truncated. There are slashes, :, and UTF-8 &.

Interestingly enough larger ones work on my laptop (VMWARE image) with 6.7.1 SP1 Beta. The server it is failing on is 6.7.1 Win 2003.

It could be a Java string issue as you said. Can you pass an array from Perl to JS ? I could separate individual fields by commas. That would be a pain.

Andy

ISCBorisB

I get this as a JS error:

A Runtime Error has occurred.
Do you wish to Debug
Line:1
Error Expected ')'

When I open it up in a debugger, I get the onload statement:

<body onload="javascript&colon;parent.getScriptFrame().setHotelListFromMain('10 K characters')">

There are no apostrophes, quotes or parens in the data I truncated. There are slashes, :, and UTF-8 &.

Interestingly enough larger ones work on my laptop (VMWARE image) with 6.7.1 SP1 Beta. The server it is failing on is 6.7.1 Win 2003.

It could be a Java string issue as you said. Can you pass an array from Perl to JS ? I could separate individual fields by commas. That would be a pain.

Andy

You are exceeding the maximum length of the single JS command (not the String Object size limit!). If I were you I would code something like the following instead.
Alternatively you may perhaps code your string as multiple s = s + 'chunk'; commands

//--------------------------------------------------------------------------------------
// FormAPI (Client Side)
//--------------------------------------------------------------------------------------
var HotelList = new Array;
. . .
setHotelListFromMain(currentEntry) {
   HotelList[HotelList.length] = currentEntry;
}

#---------------------------------------------------------------------------------------
# From the server side, generate something like that:
#---------------------------------------------------------------------------------------
print "Content-type: text/html\n\n";

my $page = <<END_PAGE;
<html>
<head>
<script type="text/javascript" language="javascript">
   var api = parent.getScriptFrame();
   if (api) {
      api.setHotelListFromMain('Entry0');
      api.setHotelListFromMain('Entry1');
      ...
      api.setHotelListFromMain('EntryN');
   }
   else {
      alert("Oh, Oh...");
   }
</script>
</head>
<body>
</body>
</html>
END_PAGE

print $page;

nipper

Thanks Bo, I will try that Monday

Frederik

I only write bits of JavaScript twice a year - so at the risk of sounding stupid - why not prepare the names & locations as Array in the callserver part, and pass the 2 Array object to the JS callback function?

ISCBorisB

I only write bits of JavaScript twice a year - so at the risk of sounding stupid - why not prepare the names & locations as Array in the callserver part, and pass the 2 Array object to the JS callback function?

You can do it this way, no problem at all. Or you can use JavaScript object as hash: DCRRepository['Name']='Location';
There is more than way to do anything.

filterandfirstpageexamples.zip

nipper

I only write bits of JavaScript twice a year - so at the risk of sounding stupid - why not prepare the names & locations as Array in the callserver part, and pass the 2 Array object to the JS callback function?

That was what I had originally tried. For some reason I was not able to get a Perl array passed to a JS array. No idea why. So I took the array, separated each entry with a | and then did a split on the receiving end. That worked great for smaller lists, but not the very large ones I had.

I did Bo's suggestion and did a bunch of JS calls. On the last one I set a flag and then process all the information.

Andy