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CGI help

Jenni

Hi All,

Thanks in advance. I am trying to pass on a value of the field to the CGI. The CGI validates the data and in case of invalid data, it should prevent the user from Saving the dcr. How could we achieve it? Any ideas?

I don't know how to prevent the saving of DCR.

Thanks!
Jenni

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nipper

You need formapi and a callserver to do this.

It is pretty easy, I do similar often. One example is I have a field that defines the save path, onSave event kicks off a callserver to an ipl that creates directories if needed, and rejects if the file exists.

What have you tried ?

Jenni

You need formapi and a callserver to do this.

It is pretty easy, I do similar often. One example is I have a field that defines the save path, onSave event kicks off a callserver to an ipl that creates directories if needed, and rejects if the file exists.

What have you tried ?

Hi Nipper,

My idea is to use a hidden field in the dct and update its value from the CGI. Depending on the value of the hidden field, I can validate the form, whether to save it or not.

I was able to get the value of the field to the CGI, but still working on how to update the value of the hidden field.

Is there any way, you could share the code snippet Smiley Happy

Thanks!
Jenni

nipper

Callservers replace CGIs now. it is pretty easy to put together. You can get a code sample from page 31 of the 6.7 TST FormAPi manual

But basically you build a blank HTML page that runs a callback function (in your FormAPI) with that parameter. Then it sets the field.

I can attach a piece of code if this is not clear.

Adam Stoller

Hi Nipper,

My idea is to use a hidden field in the dct and update its value from the CGI. Depending on the value of the hidden field, I can validate the form, whether to save it or not.

I was able to get the value of the field to the CGI, but still working on how to update the value of the hidden field.

Is there any way, you could share the code snippet

Thanks!
Jenni

I think you need an onSave or onSaveValid event handler - which checks the value of the hidden field and returns 'false' if it's not what you're looking for.
(oops - misread the above thinking you had gotten the hidden field set but hadn't figured out how to stop the save operation - see some of the other responses and/or FormAPI manual and other threads to see how to set the hidden field)

kaalraa

Hi Nipper,

My idea is to use a hidden field in the dct and update its value from the CGI. Depending on the value of the hidden field, I can validate the form, whether to save it or not.

I was able to get the value of the field to the CGI, but still working on how to update the value of the hidden field.

Is there any way, you could share the code snippet

Thanks!
Jenni

 
var pFrame = top.opener.parent.getScriptFrame(); 
print "pFrame.IWDatacapture.getItem(\"$ItemName\").setValue(\"$itemValue\");\n";

nipper

 
var pFrame = top.opener.parent.getScriptFrame(); 
print "pFrame.IWDatacapture.getItem(\"$ItemName\").setValue(\"$itemValue\");\n";

While what Kaalraa posted will work and solve your problem, I never write like this and suggest others do not as well. Shameless advertising - this will be in my GearUp preso on TST best practices.

Basically the issue is that callservers are now very common and callback routines are typically required. Write a general purpose callserver utility that you can reuse the code (not with cut and past but as a library) that passes parameters as well as the callback function (the FormAPI funtion to execute when the callserver completes). It should pass the data and execute the setValue for you.

Reghunath

Please refer to this thread http://devnet.interwoven.com/forums_vb/showthread.php?t=23392&forumid=11
You can find sample code, which has callserver and also hidden fields population functionalities...

Regards,
Reghu.

brvhrt

While what Kaalraa posted will work and solve your problem, I never write like this and suggest others do not as well. Shameless advertising - this will be in my GearUp preso on TST best practices.

Basically the issue is that callservers are now very common and callback routines are typically required. Write a general purpose callserver utility that you can reuse the code (not with cut and past but as a library) that passes parameters as well as the callback function (the FormAPI funtion to execute when the callserver completes). It should pass the data and execute the setValue for you.

when and where the GearUp will be held Andy?

nipper

San Francisco 3rd week of April. There were announcements.

Jenni

 
var pFrame = top.opener.parent.getScriptFrame(); 
print "pFrame.IWDatacapture.getItem(\"$ItemName\").setValue(\"$itemValue\");\n";

Hi,

Thanks for the reply. Here, I am not opening any 2nd window for display. Just I will do my validation in the call out program(ipl) and I would like to change the value of parent form field(hidden variable) before completing this ipl.

Thanks!
Jenni

nipper

Hi,

Thanks for the reply. Here, I am not opening any 2nd window for display. Just I will do my validation in the call out program(ipl) and I would like to change the value of parent form field(hidden variable) before completing this ipl.

Thanks!
Jenni

That is not how callservers work. It runs one the server and passes information back to the client with a formapi command (like he showed) or passing a variable to a callback function which is how I typically do it.

No windows are opened everything is in the background.

Reghunath

CallServer is a Asychronous Procedure call(APC).

To understand in depth follow,
http://en.wikipedia.org/wiki/Asynchronous_procedure_call
Widely used APC implemention is AJAX.
http://en.wikipedia.org/wiki/AJAX

ISCBorisB

CallServer is a Asychronous Procedure call(APC).

To understand in depth follow,
http://en.wikipedia.org/wiki/Asynchronous_procedure_call
Widely used APC implemention is AJAX.
http://en.wikipedia.org/wiki/AJAX

Not everything done asynchronously is an APC. In this case, there is no "P" to stick in the middle of the acronym.

callServer is an asynchronous method of the FormAPI's IWDatacapture Class. It does not however execute an APC (neither
does AJAX by the way) - and it certainly can not BE an APC. It simply makes (Ok, asynchronous) http request to the specified
URI and may provide few unstructured parameters in the bargain, that's it.

Jenni

That is not how callservers work. It runs one the server and passes information back to the client with a formapi command (like he showed) or passing a variable to a callback function which is how I typically do it.

No windows are opened everything is in the background.

Hi Nipper,

Thanks for the reply. Do we have any example for using in the background(no visual form)?

Thanks!
Jenni

nipper

Hi Nipper,

Thanks for the reply. Do we have any example for using in the background(no visual form)?

Thanks!
Jenni

This is partial code that I took from working code, it should be pretty close:

FormAPI to invoke the callserver:




 top.hiddenFrameRunning = false;
 var params = new Object();
 params.callBack= "returnFunction";
 params.someData = 12;
 progName = "blah.ipl";
 // Execute the remote server call
 var server   = window.location.hostname;
 var URL      = "http://" + server + ":80" + "/iw-bin/" + progName;
 IWDatacapture.callServer(URL, params, false);
}

call server code (iw-home/http/iw-bin/blah.ipl):
[html]
#!d:\Interwoven\iw-home/iw-perl/bin/iwperl.exe
use TeamSite::Config;
use TeamSite::CGI_lite;

$|=1;
my $cgi = TeamSite::CGI_lite->new();
$cgi->parse_data();

my $callBackFunction = $cgi->escape_html_data($cgi->{form}{callBack});
my $data = $cgi->escape_html_data($cgi->{form}{someData });
$newdata=$data+1;

print<<"END";
Content-type: text/html; charset=utf-8

END

[/html]

FormAPI callback function


function returnFunction(newData)
{
 var item=IWDatacapture.getItem("/Root/HiddenItem");
 item.setValue(newData);
}