asked on

check the parent frame's name and make decisions based on it

Hi Expert,

Is it possible to retrieve the name of a parent frame and make decisions based on that value?

Let's say I put code in the child frame that checks the name of the parent and if it is not "parent.htm" it reloads the page within in the “parent.htm” parent page?

I know I should no longer use frames but in this old site I just need to.

Thanks,

Gurbe

Ray Paseur

Maybe a better design strategy would be to pass a GET string to the script that runs in the inner frame.

Ray Paseur

IIRC, this should work, too.

<?php // RAY_timestamp_handshake_parent.php 
error_reporting(E_ALL);

// DEMONSTRATE HOW TO USE A HANDSHAKE BETWEEN A MAIN WEB PAGE AND AN IFRAME.
// IF THE IFRAME IS NOT CALLED FROM THE MAIN WEB PAGE, IT WILL REDIRECT TO
// THE MAIN WEB PAGE.  THE STRATEGY USES A TIMESTAMP TWO SECONDS IN THE FUTURE
// AS A KEY TO UNLOCK THE IFRAME.

// ALWAYS START THE SESSION UNCONDITIONALLY ON EVERY PAGE
session_start();

// SET THE WINDOW OF OPPORTUNITY
$_SESSION["tm"] = time() + 2;

?>
<html>
<head><title>PARENT</title></head>
<body>
<p>THIS IS THE PARENT PAGE</p>
<p>HERE IS THE IFRAME, RIGHT BELOW</p>

<iframe src="/RAY_timestamp_handshake_child.php"></iframe>

<p>THAT IS THE IFRAME, UP THERE</p>
</body>
</html>

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Ray Paseur

Here is the other part of the demonstration script.

HTH, ~Ray

<?php // RAY_timestamp_handshake_child.php
error_reporting(E_ALL);

// THIS IS THE CHILD SCRIPT IN THE IFRAME

// ALWAYS START THE SESSION UNCONDITIONALLY ON EVERY PAGE
session_start();

// IF THE TIMESTAMP IS FILLED IN
if (isset($_SESSION["tm"]))
{
    // IF THE TIMESTAMP IS STILL IN THE RANGE
    if ($_SESSION["tm"] > time())
    {
        // CREATE THE IFRAME OUTPUT HERE
        echo "HELLO FROM THE IFRAME<br/>" . PHP_EOL;
        var_dump($_SESSION);

        // CLEAR THE TIMESTAMP
        unset($_SESSION["tm"]);
    }
    else
    {
        // CLEAR THE TIMESTAMP
        unset($_SESSION["tm"]);

        // GO BACK TO THE PARENT
        header("Location: /RAY_timestamp_handshake_parent.php");
        exit;
    }
}
// IF THE TIMESTAMP IS NOT FILLED IN
else
{
    // GO BACK TO THE PARENT
    header("Location: /RAY_timestamp_handshake_parent.php");
    exit;
}

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Dushyant Sharma

http://www.pageresource.com/jscript/jframe2.htm

Steynsk

ASKER

@ Ray,

My question is about good old fesion frames not Iframes. And sorry I don't want to write info to session variables. Can't this be done in plane javascript?

@ddsh79

That has nothing to do with getting the parent file name.
Sorry..

Steynsk

ASKER

I more think in this direction:

if(parent.frames !=="parent.htm")
parent.frames.location="parent.htm";

Sory my javascript knowlige is small

Dushyant Sharma

it should be

if(parent.framename.location !=="parent.htm")
parent.framename.location="parent.htm";

where framename is the name of the frame you are trying to access.

Dushyant Sharma

if you are trying to get the url of the page itself then you can use
window.location.href

this will give you the complete url as http://www.xyz.com/parent.html

ASKER CERTIFIED SOLUTION

leakim971

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Ray Paseur

Well, stupid me. I just took a long-shot guess that you might want a PHP solution since you posted the question in the PHP Zone.

Maybe these results will help:
http://lmgtfy.com?q=Learn+JavaScript

Over and out, ~Ray

Steynsk

ASKER

thanks

leakim971

You're welcome! Thanks for the points!