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@URLOpen and Back Navigation

Posted on 2009-03-31
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Last Modified: 2013-12-18
I have the following code, and it works.

My problem is if you click the Back button it brings up the previous window and will put the login page in various frames. Then if I click the refresh or reload button next to the URL the entire page will display the login screen.

Any ideas why this is happening ?
@URLOpen("http://" + @GetHTTPHeader("Host") + "/" + @WebDbName + "?Logout")

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Question by:Michael Williams
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Expert Comment

by:SysExpert
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It looks like you are logging out, so a login screen would be expected.

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Author Comment

by:Michael Williams
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Do you know of an @Function or @Command that can verify whether a user is logged in ?
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Author Comment

by:Michael Williams
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If I refresh the individual frames, the login page will appear in each. 2 of them still show the views associated with them. They are apart of a DB that allows Anonymous.
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Assisted Solution

by:SysExpert
SysExpert earned 166 total points
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Since Anonymous does not require a log in, that makes sense.

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by:ironclads
ironclads earned 334 total points
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I don't know if this is what you need or if you can use it.  Personally, I use a check to see if the login page is being displayed in one frame and then reload the entire db again.  Here it is:

In the onload, put:

checkForExpiredSession()

In the JSHeader put:

(See Code Snippet)
var frameName

var doc

var timerTemp

var i

var timeOutTime = 0

var urlTemp
 

function checkForExpiredSession() {

	for (i=1; i < 4; i++) {

		if (parent.frames[i] != null) {

			if (parent.frames[i].document != null) {

				if (parent.frames[i].document.forms[0] != null) {

					if (parent.frames[i].document.forms[0].action != null) {

						if (parent.frames[i].document.forms[0].action != "") {

							doc = parent.frames[i].document.forms[0]

							tempString = doc.action.toUpperCase()

							if (tempString.indexOf( ".NSF?LOGIN" ) > 0) {

								window.top.location = urlTemp

								return false

							}

						}

					}

				}

			}

		}		

	}

	

	//Set timeout initially to 30 minutes before checking.

	if (timeOutTime == 0) {

		timeOutTime = 30

		timerTemp = setTimeout( "checkForExpiredSession()", 1800000 )

	} else {

		timerTemp = setTimeout( "checkForExpiredSession()", 2000 )

	}

}

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Author Comment

by:Michael Williams
Comment Utility
The only thing that happened was it added the login screen to a couple of the other frames. I need the entire page to go to the login screen. By default if you aren't logged in it will go to our login screen. Is there a way to force "_top" to refresh if they aren't logged in ?
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Assisted Solution

by:ironclads
ironclads earned 334 total points
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The code I provided is for one frame, preferrably a static frame, which loads once.  This frame manages the check for a login and if a login page is found in any other frame, it will load the "top" or frameset with the login url.  So, put the code into one of your frames that loads once when the frameset loads, or create a new hidden frame that opens a page with this code on it, then the next time it sees any of your frames with a login, it will load the top with the login url.

Let me know if you need further help.  Good Luck.
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Author Comment

by:Michael Williams
Comment Utility
Um
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Expert Comment

by:ironclads
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Um...what?  Um...Ok, or Um...need more help?
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Accepted Solution

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Michael Williams earned 0 total points
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We went with:

@URLOpen("http://" + @GetHTTPHeader("Host") + "/" + @WebDbName + "?Logout")

And use the following when we want to do a redirect:

@URLOpen("http://" + @GetHTTPHeader("Host") + "/" + @WebDbName + "?Logout&redirectto=http://" +  + @GetHTTPHeader("Host"))
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