Set session variable on image click

benkayuk · benkayuk

Hi there guys,

Having a problem...I want to set a language session variable when a user
clicks on a flag which is in an image map on the index page.

At the moment, the hotspot just links to 'index2', but how can I make it set a
language variable and go to index2 also?

This is a big hole in my CF knowledge, I hope someone can help me fill it!

Thanks, Ben

Stressed_Simon · Stressed_Simon

In all honesty you are best to pass this as a URL variable and then set that to a session variable on the index2.cfm page.

Make sense?

benkayuk · benkayuk

Hi Simon,

Ok makes sense....but how do I set the url to a session variable on the second page?

Ben

Stressed_Simon · Stressed_Simon

benkayuk · benkayuk

OK, I've turned the image into sending an url variable 'lang'...so it gets to
index2 as index2.cfm?lang=en

On my index2.cfm page I have <cfset URL.lang = SESSION.lang> right at the top
(above the <head> tag).

That's the only coldfusion stuff I have at the top of that page. Now, when I
go to site_root/dehler25/25boatoverview.cfm ....which is set to draw text from
a DB WHERE lang = SESSION.lang I get nothing!!!

I tested the overview page with a simple URL variable and it worked...is there
somewhere I need to put something in an application.cfm file...or do I need
more code at the top of index2.cfm ??

Hope you can help me further, really appreciated,

Ben

Stressed_Simon · Stressed_Simon

Sorry I assumed that you knew how to turn on SESSION variables.

You need to put this in your Application.cfm:-

<cfapplication
name="yourApplicationName"
sessiontimeout="#CreateTimeSpan(0, 0, 30, 0)#"
sessionmanagement="yes">

benkayuk · benkayuk

Hmm....well I had this already in my root directory...is that the place it
should be?

<cfapplication NAME="language">
<cfapplication sessionmanagement="yes">
</cfapplication>

I'm not that bothered about it timing out...or should I be?

Also, where does the application name link to? Because I have no mention of it
anywhere else...i just chose it out of the blue!

Ben

Stressed_Simon · Stressed_Simon

OK well basically the application name does not matter too much. It is just
that if you change it at any point all the client, session and application
variables will be reset.

As for the timeout, that is how long the session variables will last if there
is not action by the user. Basically how long they can leave their browser idle
before the variables are deleted from Application memory. The value set here
overides the default set in the CF administrator, but will not be able to be
above the max set in CF Admin.

I have never used cfapplication with a closing tag, I am pretty sure it
doesn't work. try how I showed you and if it works then it should answer you
question!

benkayuk · benkayuk

OK, changed my application.cfm but still no joy.

I sometimes get an error on my index2.cfm page even when I click through from
the language selection page (index.cfm)....

All I have at the top of index2.cfm is...

<cfset URL.lang = SESSION.lang>
<html>
<head>
<link rel="shortcu........

Is that really all that is required up there?

The error I sometimes get on index2.cfm is :

Element LANG is undefined in SESSION.

The error occurred in C:\CFusionMX7\wwwroot\CFIDE\dehler\index2.cfm: line 1

1 : <cfset URL.lang = SESSION.lang>
2 : <html>
3 : <head>

Hope you have a clue! Ben

Stressed_Simon · Stressed_Simon

Well a good start would be renaming application.cfm to Application.cfm. Also check that Session variables are enabled in the CF administrator!

benkayuk · benkayuk

Yep, changed to Application.cfm and session variables are (were already)
enabled.

What I don't understand is why I get the message Lang is undefined in Session,
when the only command on the index2.cfm page is to actually SET the session in
the first place!

Any ideas?
Ben

Stressed_Simon · Stressed_Simon

I am so sorry I have been half asleep here. I got it the wrong way round.

<cfset SESSION.Lang = URL.Lang>

benkayuk · benkayuk

Hahaha, jeez that solved everything!!

Then again, I should have spotted it too! lol

Thanks for all your help!

Ben

Amadeyo · Amadeyo

Hi, I'm also having problem with the session variables in cf. Well, it is really my first time to use cf in my web dev., and i becoming to like really. Implementing of queries is awesome so simple and manipulating at the same time. But every thing looks fine until I reached session part w/c really give me headache dealing with it. Unlike sesssion variables in php quite ease to handle but cf, i'm really having trouble, I can't get it. @Stressed_Simon, you know what I did in order to prevent the problem you encountering "undefined", I create file for my application and include it in all my pages... But the trick works, just don't sure if it the correct way.

Set session variable on image click

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