IE7 form submit problem

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gzannd - 30 Dec 2006 03:16 GMT

I have a problem with submitting a form to a PHP page through a
dynamically created IFRAME in IE7. This code works fine in Firefox.
However, IE7 submits an empty form--the correct PHP page is called, but
no form variables are passed to the page.

Here's the client-side code:

//Create or reuse an IFRAME to submit data to a specified page.
//commandToken: A string that tells the page what to do.
//data: Data that the page will work with.
//callbackFunctionName: Name of javascript function to call when the
page returns.
//userID: ID of user.
//url: Page to which form will be submitted.
//iFrame: Name or reference of IFRAME through which the form data will
be submitted.
GenericWindow.prototype.executeServerRequest2 = function(commandToken,
data, callbackFunctionName, userID, url, iFrame)
{
    var theIFRAME = null;

    //If the specified IFRAME is a string then create the new IFRAME
element.
    if(iFrame.length)
    {
        theIFRAME = this.createDataExchangeIFrame2(iFrame);
    }
    else
    {
        theIFRAME = iFrame;
    }

    if(callbackFunctionName != null)
    {
        if(!url)
        {
            url = serverURL;
        }
        else
        {
            url = serverURLBase + url;
        }

        var htmlString = "<html><body onLoad=''>";
        htmlString += '<form action="' + url + '" id="submitForm"
name="submitForm" method="post">';
        htmlString +='<input type="hidden" id="USERID" name="USERID" value="'
+ userID + '">';
        htmlString +='<input type="hidden" id="DATA" name="DATA" value="' +
data + '">';
        htmlString +='<input type="hidden" id="COMMAND" name="COMMAND"
value="' + commandToken + '">';
        htmlString +='<input type="hidden" id="CALLBACK" name="CALLBACK"
value="window.parent.bbsRenderer.getWindow("' + this._windowName +
'").' + callbackFunctionName + '()">';
        htmlString +='<input type="hidden" id="AUTHENTICATION_TOKEN"
name="AUTHENTICATION_TOKEN" value="' +
document.getElementById("AUTHORIZATION_TOKEN").value + '">';
        htmlString +='</form>';
        htmlString +='</body></html>';

        this.logCommand(commandToken, htmlString);

        if(theIFRAME.contentDocument)
        {
            //For Mozilla and similar browsers.
            theIFRAME.contentDocument.write(htmlString);
            theIFRAME.contentDocument.getElementById("submitForm").submit();
        }
        else if(theIFRAME.document)
        {
            //For IE and similar browsers.
            document.frames[theIFRAME.id].document.write(htmlString);
            document.frames[theIFRAME.id].document.forms[0].submit();
        }
    }

    return theIFRAME;
}

/*Creates the IFRAME used to communicate between the window and the
server.
If the IFRAME already exists, then it will be reused.*/
GenericWindow.prototype.createDataExchangeIFrame2 = function(iFrameID)
{
    var iFrame = document.getElementById(iFrameID);
    if(iFrame != null)
    {
        return iFrame;
    }
    else
    {
        iFrame = document.createElement("IFRAME");

        if(iFrameID == null)
        {
            iFrame.id = this._windowName + "_DataExchangeIFrame_" +
this._dataExchangeIFrameList.length;
        }
        else
        {
            iFrame.id = iFrameID;
        }

        this._windowFrame.appendChild(iFrame);
        this._dataExchangeIFrameList[this._dataExchangeIFrameList.length] =
iFrame;
        iFrame.src = "blank.html";

        return iFrame;
    }
}

Here's the server-side code:
$userID = $_POST['USERID'];    //Calling process's user ID. The value
must be numeric and not null.
$data = $_POST['DATA'];        //Calling process's data.
$callback = $_POST['CALLBACK'];    //Calling process's callback
information.
$commandToken = $_POST['COMMAND'];    //Calling process's command token.
This value is required.
$authenticationToken = $_POST['AUTHENTICATION_TOKEN'];    //Calling
process's authentication token, used to verify sessions.

Result of a call in Firefox (I used PHPINFO() to dump the request and
post variables):
_REQUEST["USERID"]    null
_REQUEST["DATA"]    <GET_ROOM_DESCRIPTION roomID=\'2\' userID=\'0\'/>
_REQUEST["COMMAND"]    GET_ROOM_DESCRIPTION
_REQUEST["CALLBACK"]    window.parent.bbsRenderer.getWindow(\"LoginWindow\").handleGetDataResponse()
_REQUEST["AUTHENTICATION_TOKEN"]    no value
_POST["USERID"]    null
_POST["DATA"]    <GET_ROOM_DESCRIPTION roomID=\'2\' userID=\'0\'/>
_POST["COMMAND"]    GET_ROOM_DESCRIPTION
_POST["CALLBACK"]    window.parent.bbsRenderer.getWindow(\"LoginWindow\").handleGetDataResponse()
_POST["AUTHENTICATION_TOKEN"]    no value

The same call with the same data values produces no request or post
variables from IE.

Any help would be appreciated!

Reply to this Message

gzannd - 30 Dec 2006 20:54 GMT

I rebooted the computer, and the problem seems to have gone away...

> I have a problem with submitting a form to a PHP page through a
> dynamically created IFRAME in IE7. This code works fine in Firefox.
[quoted text clipped - 135 lines]
>
> Any help would be appreciated!

Reply to this Message

Webmaster Forum / HTML, CSS, Scripts / JavaScript / December 2006

IE7 form submit problem