Posted by Randy Webb on 08/15/06 22:59

Chris said the following on 8/15/2006 6:12 PM:
> "Rik" <luiheidsgoeroe@hotmail.com> wrote in message
> news:<8e84e$44e23d2f$8259c69c$14497@news1.tudelft.nl>...
>> Well, if you're having a problem with the javascript, post in
>> comp.lang.javascript,
>> js has absolutely nothing to do with the PHP which created it. Judging by
>> your code:
>
> I don't understand your statement - "js has absolutely nothing to do with
> the PHP which created it".

If you don't understand that statement, you need to take a good class on
HTTP.

> My problem isn't the js - it works okay on a non-php generated form -

Yes, your problem is the js. If it works on a "non-php generated form"
then it will work on a PHP generated form providing PHP doesn't change
the names/ID's.

> I have used js to validate html forms in the past with no problem.

With just the snippet quoted in the previous post, I find that a dubious
claim that I don't believe.

> The question is how to work with PHP and js together - a commonly asked
> question in forums.

And you will get two replies to that question:

1) They are unrelated other than being on the opposite ends of a
stateless HTTP Connection.
2) Some utter garbage that doesn't resemble the truth.

> There are ways to pass the variables back and forth, etc. which I have
> used elsewhere in my application.

Really? And you don't understand form validation using JS and that PHP
has nothing to do with it? Impressive.

> But I haven't seen anything regarding form validation when the form is
> PHP and the validation is js.

That is because JS doesn't know, and doesn't care, what server side
language generated it. It's irrelevant.

<snip>

> That's my concern as I know that PHP is server-side and processes before
> data goes to the browser. So - how to intercept the data as it goes from the
> browser to the server?

You use JS and the onsubmit event handler. Once it is submitted, JS
can't touch it.

> I'm sure this is a fairly simple process, since there are tons of PHP forms
> out there that get validated. Perhaps incorporate the js into the processing
> page at the very beginning?

Nope.

> //check that form has been submitted
> if (isset($_POST['uploadfile'])) { //begin check for submission
> Validate form elements and show js alerts here (how to redirect user back to
> form and elements for revisions? Maybe I should keep the processing on the
> same page as the code.
> //check if file uploaded
> if (isset($_FILES['fileupload']['name'])) { // begin check for uploaded file
> What to do if form is valid:
> 1.create path and move temp file to permanent location
> 2.insert data into db
> 3.display success page
> }else{
> File not uploaded - try again!
> }
> } else { //end submission and validation check
> Show form
> }
> Does this look like reasonable workable logic?

Not even close.

--
Randy
comp.lang.javascript FAQ - http://jibbering.com/faq & newsgroup weekly
Javascript Best Practices - http://www.JavascriptToolbox.com/bestpractices/

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