Problem with passing a variable via html

beteb

I have a very simple form:

<form action='signup_student.php?teacher_id={$teacher_id}' target="_blank" method='GET'>
                <input type="submit" class='button' value='Add New Student' onClick="submit"></form>

This used to work, but then something changed and now when the button is clicked, the new page pops-up but the variable and everything is stripped out?

It just shows signup_student.php in the address bar. I could understand if it didn't show the variable value, but what would strip out the "?teacher_id="?

Thanks!
Elizabeth

dagon

does it work without the javascript? (remove the onClick)

beteb

Thanks, dagon. Great idea, but no luck. It's still stripping out everything including the question mark.

But who needs the xtra code - thanks for catching that and I've removed the javascript anyway.

dagon

can you post the url of the page?

beteb

Unfortunately, it's part of a package (SocialEngine, but heavily customized) where you have to have an account and be logged in to see the page. I'm really looking for possible causes that I can check. The thing that's driving me nuts is that it was working until Sept. 8, and then it stopped (they didn't tell me until this Monday). I think that was the day I made a change to the header file, but I reversed the changes and it's still doing it.

I checked the source, and the link appears correctly with the variable filled in. I just can't think of what would strip out the '?teacher_id=' - if it was just the value I could understand that.

bradgrafelman

The teacher_id is getting stripped out because your browser is (correctly) rewriting the URL to include only those elements that were submitted in the form. Since there are no named elements being submitted, you're probably seeing a blank query string (e.g. "signup_student.php?").

If you want to pass the teacher_id in a form that uses the GET method, then add that value as a hidden input element (e.g. <input type="hidden">).

beteb

It actually worked like that just fine for about a month. But thanks, as that actually got me thinking in a different direction!! I just changed it to an html link and formatted the link to look like a button, which worked like a charm.